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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > All COBB Tuning AccessPORT Flash for N54 335i Discussion Here



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      03-11-2013, 05:07 PM   #7041
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So I'm at 67% unistalled till next week my question, is it ok to let the ecu and car sit till tomorrow afternoon or should I get some miles on the car tonight?

Last edited by 335iRlz; 03-11-2013 at 05:18 PM.
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      03-11-2013, 05:18 PM   #7042
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Originally Posted by 335i1 View Post
So I'm at 67% unistalled till next week my question is it ok to let the ecu sit from now 6pm till tomorrow afternoon or should I get some miles on the. At after the uninstall?
I assume you mean for dealer service? I try to drive around a bit after removing the flash to see if any adaptations take place, but TBH I've taken my car in within 20 miles of taking Cobb off, and it was fine. No warranty issues no questions.
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      03-11-2013, 05:20 PM   #7043
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Originally Posted by 135Pats View Post
I assume you mean for dealer service? I try to drive around a bit after removing the flash to see if any adaptations take place, but TBH I've taken my car in within 20 miles of taking Cobb off, and it was fine. No warranty issues no questions.
Well its not going in till Sat (oil change coupon ) I just didn't want to let the car sit tonight if its better to give it some time to get used to the ECU change again?
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      03-11-2013, 06:04 PM   #7044
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Just started pulling logs from my car, flashed it about 2 weeks ago.. Had some misfires from overdue plugs.. just did them this weekend.. and there was still a slight hesitation in boost, i figured it might be more than just plugs.

Anyone want to take a look at this log for me? It seems the car is pulling timing? Suggestions?



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      03-11-2013, 06:45 PM   #7045
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Quote:
Originally Posted by Down_Shift View Post
Just started pulling logs from my car, flashed it about 2 weeks ago.. Had some misfires from overdue plugs.. just did them this weekend.. and there was still a slight hesitation in boost, i figured it might be more than just plugs.

Anyone want to take a look at this log for me? It seems the car is pulling timing? Suggestions?



Yeah, timing looks bad ... what map are you running and what are your mods/octane? You should probably try a more conservative map to see if that fixes your timing corrections.
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      03-11-2013, 07:37 PM   #7046
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Just installed stage I on my 2010 335i. Wow, what a difference! Perfect adjustment in timing. +1 cobb for another job well done.
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      03-11-2013, 08:14 PM   #7047
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Quote:
Originally Posted by Down_Shift View Post
Just started pulling logs from my car, flashed it about 2 weeks ago.. Had some misfires from overdue plugs.. just did them this weekend.. and there was still a slight hesitation in boost, i figured it might be more than just plugs.

Anyone want to take a look at this log for me? It seems the car is pulling timing? Suggestions?

[IMG]http://i49.tinypic.com/33m23v8.jpg[/IG]

[IMG]http://i48.tinypic.com/26440ig.jpg[/IM]


Quote:
Originally Posted by dallas_jeff View Post
Yeah, timing looks bad ... what map are you running and what are your mods/octane? You should probably try a more conservative map to see if that fixes your timing corrections.
+1 to all of this. You're turbos are hitting targets just fine, your corrections are fairly severe and that's what's causing the lack of performance.
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      03-11-2013, 08:23 PM   #7048
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Quote:
Originally Posted by JMD415 View Post
Just installed stage I on my 2010 335i. Wow, what a difference! Perfect adjustment in timing. +1 cobb for another job well done.
If you're excited about that, wait until you try a Stage 2+ or an e85 based map
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      03-11-2013, 11:13 PM   #7049
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Quote:
Originally Posted by nema
Quote:
Originally Posted by Jeef View Post
Would running e30 all the time be bad for the car?
The higher the ethanol mix you run the more it will make the pump work, which in turn, reduces the life of the pump. How much running a 30% mix takes off the life of the pump is unknown. Also, it's a good idea to run e10 gasoline through the tank every 3-4 fill ups to "clean" the fuel system of any ethanol deposits that may have formed.
So lets say I run 5 gallons e85 with ten gallons of 91 for three weeks. You recommend running 91 only for a week after?
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      03-11-2013, 11:30 PM   #7050
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Originally Posted by Jeef View Post
So lets say I run 5 gallons e85 with ten gallons of 91 for three weeks. You recommend running 91 only for a week after?
I would recommend running maybe half a tank of 91 once a month just as a preventative measure. In all honesty, you can probably run e30 all the time and it not hurt anything. I just like a little peace of mind, especially when it's so easy.
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      03-12-2013, 12:23 AM   #7051
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Quote:
Originally Posted by dallas_jeff View Post
Yeah, timing looks bad ... what map are you running and what are your mods/octane? You should probably try a more conservative map to see if that fixes your timing corrections.
Since then, I've flashed the car with Stage2 aggressive and did a few more logs.. it looks like it's still pulling timing?









I'm not getting any codes or anything. The car was fine before. I had a misfire on #5, so I replaced all the plugs with bosch plugs and I swapped #5 coil with #1 coil.

I'm going to maybe try stage 0 and see if it does anything weird.
I'm running FBO.
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      03-12-2013, 05:25 AM   #7052
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Quote:
Originally Posted by Down_Shift View Post
Since then, I've flashed the car with Stage2 aggressive and did a few more logs.. it looks like it's still pulling timing?



I'm not getting any codes or anything. The car was fine before. I had a misfire on #5, so I replaced all the plugs with bosch plugs and I swapped #5 coil with #1 coil.

I'm going to maybe try stage 0 and see if it does anything weird.
I'm running FBO.
octane? why dont you use the stage 2plus or stage 2 SPORT instead?
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      03-12-2013, 09:08 AM   #7053
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Continue to try less aggressive mapping, and/or add a bit of E85 to see if that smooths out your timing issues. Also log more of the pull, ideally you want to be looking at 2.5k-6.5k with zero throttle closures.
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      03-12-2013, 02:17 PM   #7054
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Quote:
Originally Posted by Ænema View Post
I would recommend running maybe half a tank of 91 once a month just as a preventative measure. In all honesty, you can probably run e30 all the time and it not hurt anything. I just like a little peace of mind, especially when it's so easy.
sounds good thanks! If I were to upgrade the LPFP, then I wouldn't have to run 91 once in a while?
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      03-12-2013, 02:55 PM   #7055
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Quote:
Originally Posted by Jeef View Post
sounds good thanks! If I were to upgrade the LPFP, then I wouldn't have to run 91 once in a while?
Runnning a parallel setup will do wonders to both keep the LP fuel system happy(both with longevity and letting you run as much ethanol as you want) so I would always advise running an upgraded LPFP setup if you're serious about e85.

However, what I'm talking about with running 91 is CLEANING the fuel system. E85 has a reputation for leaving deposits on injectors and gasoline has been a used as cleaner to help clear this deposit up. However, this has always been on port injection setups and I haven't seen anyone mention this buildup yet on our DI setup.

Check this discussion out. It's talking about the 2.4 SRT-4 engines, but I've seen similar discussions on STi and DSM forums.
http://www.srtforums.com/forums/f187/e85-black-goo-formation-injectors-634529/
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      03-18-2013, 12:00 AM   #7056
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Ordered Cobb n54 AP today. Can't wait to receive it. Making the switch from procede.

What's the difference between linear and stock throttle?

I'm FBO (dp, fmic, cai, cbe) but no meth. Safe to run stage 2 aggressive?
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      03-18-2013, 12:10 AM   #7057
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Originally Posted by TT3 iN NyC View Post
Ordered Cobb n54 AP today. Can't wait to receive it. Making the switch from procede.

What's the difference between linear and stock throttle?

I'm FBO (dp, fmic, cai, cbe) but no meth. Safe to run stage 2 aggressive?
LT attempts to replicate a more naturally aspirated type response, just try the two and see which one you prefer. And if you're FBO stg2+ are the maps you'll want to run, or E30/race maps if that's what you're looking for.
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      03-18-2013, 12:12 AM   #7058
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Quote:
Originally Posted by JMD415 View Post
Just installed stage I on my 2010 335i. Wow, what a difference! Perfect adjustment in timing. +1 cobb for another job well done.
Post logs for the boys here they'll tell you if anything looks off, then try stage 1 aggressive I actually noticed a difference. LOVE IT.
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      03-18-2013, 05:50 PM   #7059
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Quote:
Originally Posted by TT3 iN NyC View Post
Ordered Cobb n54 AP today. Can't wait to receive it. Making the switch from procede.

What's the difference between linear and stock throttle?

I'm FBO (dp, fmic, cai, cbe) but no meth. Safe to run stage 2 aggressive?
Two ways to look at it is easiest.

Linear
1) single throttle position. Rpm engine speed increasing or decreasing.

Load requested stays constant even as revs rise. Will feel as constant acceleration as revs rise (excluding frictional and aerodynamics and .5 m v square effects)

2) throttle position increased or decreased for a given rpm.

Load requested change matches change in throttle in linear fashion for all speeds. Wool probably feel like your foot is more connected to throttle valves (know they don't exist)

Stock
1) single throttle position. Rpm speed increasing or decreasing

Load requested high at low rpm, tails off as rpm raises.

Gives impression of immediate boost to almost obtain a requested rpm.
torque then tails off as requested rpm reached. More throttle needed to maintain load as speed rises.

2) throttle position increasing or decreasing for a given rpm.

Load requested slow to respond initially, peaks rapidly, then flattens out again.

Feels that low request artificially surpressed to aid smooth driving. mid throttle is boosted, last throttle position fine tunes somewhere around maximum.



Flame suit on.

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      03-18-2013, 06:02 PM   #7060
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Quote:
Originally Posted by TT3 iN NyC View Post
Ordered Cobb n54 AP today. Can't wait to receive it. Making the switch from procede.

What's the difference between linear and stock throttle?

I'm FBO (dp, fmic, cai, cbe) but no meth. Safe to run stage 2 aggressive?
^^^ what he said

and um..... Safe to Run S2+ AGG. Based on NYC having 93 octane. I am sure you will like ST.
Also try the E30 MAPs, you will never go back. Do you have access to E85 pump? ( http://www.e90post.com/forums/showthread.php?t=738596 )

always log to be sure, log after a few WOT to ensure the car has adapted all the way.

a good read on how to data log with COBB. http://www.e90post.com/forums/showthread.php?t=696472

be safe!
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      03-19-2013, 10:19 AM   #7061
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very informative! I'll log to make sure the car is happy.

thank you!

Quote:
Originally Posted by VNeBLOB42 View Post
^^^ what he said

and um..... Safe to Run S2+ AGG. Based on NYC having 93 octane. I am sure you will like ST.
Also try the E30 MAPs, you will never go back. Do you have access to E85 pump? ( http://www.e90post.com/forums/showthread.php?t=738596 )

always log to be sure, log after a few WOT to ensure the car has adapted all the way.

a good read on how to data log with COBB. http://www.e90post.com/forums/showthread.php?t=696472

be safe!
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      03-19-2013, 11:01 PM   #7062
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Do I have a problem with 1st and 4th Cylinder since timing is being pulled at WOT, other cylinders pull timing but in certain instances and under normal driving conditions. I'm Running Stage1_ST_Sport map on my 335i e92 Stick just with K&N Drop In filter on 93 Octane. Just installed it 2nd day 2nd drive about 10miles long. I didn't notice any hesitation in acceleration and I also had DTC ON and TCS ON don't know if it matters or not. Car year 2008 and has 26K miles on it.

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