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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > 2006 325i 6MT with 3im, AA headers, 3.73 diff and 330i flash tune



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      07-12-2018, 04:58 PM   #23
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Quote:
Originally Posted by Biginboca View Post
Just to show my point...

These corrections below show my time from above but using 2 imaginary D/As. These are actual D/As I have seen at PBIR one in January was about -900, another was in August and was around 1800.

So I ran my time from above under these 2 hypothetical, but entirely realistic D/As that I have actually seen at the SAME racetrack but on different days.



Look how much the D/A matters. You guys need to consider that when you compare timeslips!
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Originally Posted by Taskmaster View Post
You're both local? Awesome.

You two should race - but the OEM tune doesn't do those mods justice. Also, I would recommend stopping at a truck stop off the highway and having the car weighed.
I dont know if 3-4 hr drive is considered local LOL

i realize today that d/a does matter for time slips and will affect the ET for instance i dont normally floor my car but i have been since doing these mods at different times at different temps but today was a real hot and humid day 100F+ and i can really feel the heat hurting power compare to late cool nights.
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      07-12-2018, 11:55 PM   #24
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^ yeah... My car is decent during the summer with those 90 degree 90% humidity (swimming in my fkn clothes oh my goodness.) days, but when it becomes winter up here in VA, and its like 50-55 degrees on an excellent day... Definitely ballin' out, my guy.
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      08-02-2018, 02:20 AM   #25
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time slip

In case if anybody was wondering what a setup like this would run in 1/4 mile, i finally had a chance to take my car to the drag strip. I was in a rush to get there that i totally forgot to take my stuff out of my car. I had a spare tire, scissor jack, some tools about 30lbs of books and almost a full tank of gas.
Temp was about 90, forgot what the d/a was but the other racers there said it sucked today. 14.6@ 96mph.

for comparison my car bone stock did 15.2@92mph. seems like a stock 330i is still faster.
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      08-02-2018, 05:12 AM   #26
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Quote:
Originally Posted by gT-BMW View Post
In case if anybody was wondering what a setup like this would run in 1/4 mile, i finally had a chance to take my car to the drag strip. I was in a rush to get there that i totally forgot to take my stuff out of my car. I had a spare tire, scissor jack, some tools about 30lbs of books and almost a full tank of gas.
Temp was about 90, forgot what the d/a was but the other racers there said it sucked today. 14.6@ 96mph.

for comparison my car bone stock did 15.2@92mph. seems like a stock 330i is still faster.
Your D/A at Orlando Speedway at the time you ran was 1349. You can looked it up here they log the D/A for most every major track:

http://dragtimes.com/da-density-altitude-calculator.php

Also at that link you can run the corrected times for your D/A which I did for you:



Driving makes a much bigger difference in the car than you think. When I look at dragy times there’s a graph that shows acceleration force and you can plainly see how someone’s launch and shifting can affect a run. I wouldn’t say your car runs a d/a corrected 14.4 because that isn’t exactly true.

What’s true is that your car runs *with you driving* a d/a corrected 14.4. We don’t know what a stock 330 would run *with you driving*, lol
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      08-02-2018, 05:18 AM   #27
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Btw just to show an example. Heres a well modded manual m4 vs an almost stock auto 435. (Mods for each listed up top of my image.)

Here you can plainly see the lousy shifts of the M4 by the 3 large dips in the Orange acceleration graph. (He has posted several runs they all look like this.)

We all know which car is faster... and yet the much faster car (M4 which finished the run about 10mph faster!) still almost loses to the lightly modded 435 if these 2 runs are side by side.



Did your launch and shifting look like this video...


Last edited by Biginboca; 08-02-2018 at 05:50 AM.
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      08-02-2018, 10:28 AM   #28
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Damn that mexican guy drove the shit out of that car!!! lol!! i should take some lessons from him!!

Yes i agree with you 100%, on my first run i didnt try to launch i just dropped the clutch at 1500 rpm and just took off, on that run i did a 14.8, strangley i got a 2.1 60ft from doing that. but i lost to a 3.5 vcm honda accord and that made me very i dont like losing to honda that ran 14.6

so the second and 3rd run i tried to launch in the power band around 3500 rpm in an attempt to drop the 60 ft time and the clutch wasnt having that, it just slipped to redline!! 15.1 on those runs and lots of clutch burning smell!!

on the final run in this video i really didnt want to burn up the clutch trying to go for a good 60 so couldnt launch hard it was around 2800 rpms or so.

i think if i took all the weight out, got there with a near empty tank and if the clutch held it probably would of ran 14.4 yesterday and i would of been satisfied. actually i would of been satisfied if i dont lose to the accord so a single mass flywheel and new oem clutch is probably going to be my next upgrade if i keep this car.

now im dreaming of a 13 sec n/a n52. is that even possible?

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      08-02-2018, 12:11 PM   #29
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lmao lets meet up at OSW I live down east colonial nearish

My stock car with only the 3.73 ran a 15.0 at 93mph at Bradenton, with some ehh launches and it was pretty hot out.
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      08-02-2018, 12:32 PM   #30
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Youll need a tune to reach low 14s/high 13s.
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      08-02-2018, 06:35 PM   #31
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Quote:
Originally Posted by desertman123 View Post
lmao lets meet up at OSW I live down east colonial nearish

My stock car with only the 3.73 ran a 15.0 at 93mph at Bradenton, with some ehh launches and it was pretty hot out.
wow you did good! you went all the way to bradenton?? that must of been a long drive! it was a 2 hrs for me and when i got there they closed down because of the rain

but yeah im down for a meet up pm me whenever you plan on going to OSW. thats about 1.5 hr drive for me.

Quote:
Originally Posted by Taskmaster View Post
Youll need a tune to reach low 14s/high 13s.

yesterday i met alot of good people, including the world record g37 owner that runs high 12 on bolt ons. he did not pay 650 for his e85 tune and neither did the audi s7 guys that was running 11.4s. something about apr tune that boosts it up to 500hp for $400.

i would really like to purchase a bpc tune but 650 IMO is just to much. i guess people that do purchase the tune wanted a more responsive daily driven car and thats great until you meet other people thats doing the same thing your doing but getting more bang out of the buck for it so for me its not worth the $$.

I already have a 9 sec capable honda, it doesnt run 9s it runs mid 10s im making some changes to it so it can run in the 11.5 index on street tires because im tired of throwing $$ at it.
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      08-02-2018, 07:14 PM   #32
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Quote:
Originally Posted by gT-BMW View Post
wow you did good! you went all the way to bradenton?? that must of been a long drive! it was a 2 hrs for me and when i got there they closed down because of the rain

but yeah im down for a meet up pm me whenever you plan on going to OSW. thats about 1.5 hr drive for me.




yesterday i met alot of good people, including the world record g37 owner that runs high 12 on bolt ons. he did not pay 650 for his e85 tune and neither did the audi s7 guys that was running 11.4s. something about apr tune that boosts it up to 500hp for $400.

i would really like to purchase a bpc tune but 650 IMO is just to much. i guess people that do purchase the tune wanted a more responsive daily driven car and thats great until you meet other people thats doing the same thing your doing but getting more bang out of the buck for it so for me its not worth the $$.

I already have a 9 sec capable honda, it doesnt run 9s it runs mid 10s im making some changes to it so it can run in the 11.5 index on street tires because im tired of throwing $$ at it.
Yeah, well a G37 and S7 isnt a E90.
I was trapping 99mph with the same mods (and higher 60ft, still had a lower ET) and biginboca was able to do 102mph.

If you want to go fast, it will cost you. Period.
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      08-02-2018, 09:08 PM   #33
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Quote:
Originally Posted by Taskmaster View Post
Yeah, well a G37 and S7 isnt a E90.
I was trapping 99mph with the same mods (and higher 60ft, still had a lower ET) and biginboca was able to do 102mph.

If you want to go fast, it will cost you. Period.

I agree. well the e90 were talking about here is the n52. im not talking about the 335i or m3. those are the kind of cars to purchase if one wanted to go fast with room to grow. because of the lack of aftermarket support, of course we will have to pay top dollar. all in i spent 650 on all 4 mods. one of the mod was free!! thats why i say, for me, its not worth spending that top dollar.. maybe for someone else it is and thats great. but for me modding and going fast for cheap is alot of fun. as long as your having fun thats the whole point of modding.
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      08-03-2018, 11:41 AM   #34
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Quote:
Originally Posted by gT-BMW View Post
wow you did good! you went all the way to bradenton?? that must of been a long drive! it was a 2 hrs for me and when i got there they closed down because of the rain

but yeah im down for a meet up pm me whenever you plan on going to OSW. thats about 1.5 hr drive for me.
I went over there for FixxFest I think. Haven't made any passes at OSW yet - also I think I'm gonna try and wrangle some 1 series guys over to OSW at some point. I'll let you know!
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      08-03-2018, 12:25 PM   #35
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Can't you get the AA tune for $400 if you go to an authorized re-seller? Or is it $500?

But yeah, I agree that $3-400 is much more reasonable than $600+ for a tune, especially for a car of this age. That said, I think the BPC tune is only $500 or less if you don't need to buy their cable/etc. to upload it. Of course, unless you're willing to drive to BPC, that doesn't help you one bit.

Tunes will always give way more bang for the buck on an F/I car as turning up the boost does way more for extra power than fine tuning things like ignition timing and AFR's. It's easy money. But I'm sure you already know that. And that's why APR became such a HUGE company, growing from the grassroots of Auburn University to the world wide leader in Audi/VW/Porsche tuning in less than one decade.
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      08-04-2018, 09:09 PM   #36
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Quote:
Originally Posted by atmosphericM View Post
Can't you get the AA tune for $400 if you go to an authorized re-seller? Or is it $500?

But yeah, I agree that $3-400 is much more reasonable than $600+ for a tune, especially for a car of this age. That said, I think the BPC tune is only $500 or less if you don't need to buy their cable/etc. to upload it. Of course, unless you're willing to drive to BPC, that doesn't help you one bit.

Tunes will always give way more bang for the buck on an F/I car as turning up the boost does way more for extra power than fine tuning things like ignition timing and AFR's. It's easy money. But I'm sure you already know that. And that's why APR became such a HUGE company, growing from the grassroots of Auburn University to the world wide leader in Audi/VW/Porsche tuning in less than one decade.

yes i agree fi cars have alot of aftermarket support so if you charge $600 for flash tune i bet it wont sell!! if AA tune really is $400 at a dealer, i will add it into my list of upgrades.

I was researching clutch upgrades for n52 and came across a CDV. Could this be the reason why the clutch slipped when i tried to launch in the powerband? I found a thread on here on how to delete it. seems simple!!

https://www.e90post.com/forums/showthread.php?t=29828

Last edited by gT-BMW; 08-05-2018 at 12:43 PM. Reason: added link
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      08-04-2018, 09:52 PM   #37
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Quote:
Originally Posted by gT-BMW View Post
yes i agree fi cars have alot of aftermarket support so if you charge $600 for flash tune i bet it wont sell!! if AA tune really is $400 at a dealer, i will add it into my list of upgrades.

I was researching clutch upgrades for n52 and came across a CDV. Could this be the reason why the clutch slipped when i tried to launch in the powerband? I found a thread on here on how to delete it. seems simple!!
The CDV is very easy. Once you have the car in the air its less than 5 mins including bleeding.

On mine the CDV made a notocable difference in both launching and downshifting.
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      08-05-2018, 12:33 PM   #38
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Originally Posted by Biginboca View Post
The CDV is very easy. Once you have the car in the air its less than 5 mins including bleeding.

On mine the CDV made a notocable difference in both launching and downshifting.
I just did the CDV delete. Took me about 5 mins to do it too but i didnt need to do any bleeding. I guess i squeezed the line to tight with my vise no fluid came out oops!

It really does make a difference in launching and downshifting, night and day difference for sure. this whole time i thought i had a slipping dying clutch and that i had to take it easy on it, instead it was that silly lil thing all along!! now i can powershift. now i can launch in the powerband.

If you drive your car like a pansy like i do on the streets, your probably not going to notice a difference and if you do, you dont need to do this mod.

If you track your car, you NEED to do this mod or else that silly lil thing will burn up your clutch.

Tomorrow i'll get the secondary cats deleted and return to the track and see what she does.

I feel like there so much more i need to learn about this car.
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      08-05-2018, 06:57 PM   #39
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Originally Posted by gT-BMW View Post

I feel like there so much more i need to learn about this car.
Oh man I'm 2 years deep and I finally feel like I'm reaching the end of most knowledge. Of course there's deep deep coding and tuning stuff, but that's with any car.

Here's my slip from OSW. Ambient temperature was probably 80-90F with decent humidity. Only could make 1 run before I had to run to see Mission Impossible with some friends (and they were cleaning/prepping so all the 8sec cars could run)

Awful R/T.

3 stage, 3.73, headers, stock BimmerLabs 130i tune and keep in mind the 128 is a weeeee bit lighter than the 3er
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      08-05-2018, 09:04 PM   #40
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Anyone have 0-60mph numbers?
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      08-05-2018, 09:18 PM   #41
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Quote:
Originally Posted by desertman123 View Post
Oh man I'm 2 years deep and I finally feel like I'm reaching the end of most knowledge. Of course there's deep deep coding and tuning stuff, but that's with any car.

Here's my slip from OSW. Ambient temperature was probably 80-90F with decent humidity. Only could make 1 run before I had to run to see Mission Impossible with some friends (and they were cleaning/prepping so all the 8sec cars could run)

Awful R/T.

3 stage, 3.73, headers, stock BimmerLabs 130i tune and keep in mind the 128 is a weeeee bit lighter than the 3er
sick time!! it would be a good race between you and I we gotta link up one day!

a 325i is rated at 3285 its got smaller brakes and stuff so it could be comparable??

i wonder if bimmer labs would release a performance tune?
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      08-07-2018, 03:16 PM   #42
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cat delete

Hey guys just an update so I did the charcoal filter delete, I know i said i wasnt going to do that but i wanted to add a bpi velocity stack from one of my old n/a honda builds. I did a dyno before and after test on it yearrs ago, this lil thing added 10whp to my b18c5 swap. so i wanted to see if it will do anything. As for as i can tell, nope!! seems like a pointless mod as i thought. but i am thinking if i remove the paper filter at the track, it should do something for the top end. well find out soon enough.

So i finally deleted the 2ndary cats. But the exhaust shop i took it to tried to rip me off. When i got there the guy said NP but i have to pay cash and i said NP. The work they did was fine and good but as soon as i picked up the cats to throw it into my trunk, he said "no if i wanted to take them i have to pay a core charge for it". I said "i have to pay for my own parts? what core charge?" then he points to the shop sign any catalytic converter taken have to pay core charge. I said "I didnt know that. If i knew that i wouldnt had come here". He says "why didnt i ask?" I said "I didnt know to ask that because other exhaust shops i have been to doesnt have a problem with me taking my old cats this isnt the first car ive went catless with. but YOU knew this. and YOU didnt tell me all you told me is that you needed cash to do the job and we agreed. If you want my old parts YOU pay me I dont PAY you because this isnt a CORE charge im not replacing a cat for a cat"

So he goes on saying to pay and then call the shop owner if i wanted to old cats back. Long story short I paid the agreed amount and threw in my old cats back in my trunk. try to stop me from taking my own parts and lets see what happens.

rant over

so anyways after closer inspection, my secondary cats were clogged. I couldnt see through it. maybe because of the oil burning issues i was experiencing clogged them.

Now my car has power in every rpm pulls harder at the upper rpm range. I'm really glad i did this mod because i was getting used to the previous mods and now i have that pinned in your seat feeling again. cant wait to drive it tonight when its cooler its about 97 degree when i left the shop.

Also its not that much louder than stock, in fact it still sounds like stock with a few subtle pops but when you get on it, it does make a little noise i really like it
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      08-07-2018, 05:10 PM   #43
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Quote:
Originally Posted by gT-BMW View Post
Hey guys just an update so I did the charcoal filter delete, I know i said i wasnt going to do that but i wanted to add a bpi velocity stack from one of my old n/a honda builds. I did a dyno before and after test on it yearrs ago, this lil thing added 10whp to my b18c5 swap. so i wanted to see if it will do anything. As for as i can tell, nope!! seems like a pointless mod as i thought. but i am thinking if i remove the paper filter at the track, it should do something for the top end. well find out soon enough.
Neat little project. It probably didn't help much since the stock airbox kinda has a velocity stack already:

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      08-07-2018, 05:20 PM   #44
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Originally Posted by freedomfries View Post
Neat little project. It probably didn't help much since the stock airbox kinda has a velocity stack already:

i saw that and i thought the same exact thing so i was wondering what would happen if you put one on top of each other LOL
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