[john boxter]

hey guys how much whp you guys think you can generate safely as a daily driver without downpipes!

[Borsig]

Im going to be working on this myself using the AMS FMIC, Procede, Stett intake, and a budget magnaflow catback w/ resonator delete.

Catted downs are so freakin expensive.

[john boxter]

ya my guess is you will be at 340 maybe? can you really crank up the proceede without downpipes? or is it to much backpressure going back into the turbos?

[Borsig]

340? You should be seeing that with just a tune IMO

[persian54]

Terry told me 1.4 beta is about 335whp on map 3 91 octane

[john boxter]

so that makes sense at 10fmic and 10 for catbak and intake

[Borsig]

right I run 93... You should be pulling 340-350 whp on 93 with intake and exhaust IMHO...

I'll be working hard on it using the procede and its variable adjustments and the ams FMIC. May also test the JB3 on dyno as well..

[Borsig]

Originally Posted by john boxter

so that makes sense at 10fmic and 10 for catbak and intake

FMIC - a good one - is goign to give you 10 HP at stock boost..

The fmic will allow you to run alot more boost / tune, etc. and theres more to tuning than cranking up the boost. Please understand this.

Also rememebr that all dynos are different.

[orionredwing]

Dyno plots are buried here, but PROcede w/ intake or drop-in is 340-350whp.

With DPs I could crank the PROcede up to 75% UT (default is 70%). There was a noticeable by-the-butt loss of power at 80% UT. I don't think DPs alone allowed me to raise the UT values any higher over stock DPs.

My theory was I needed an FMIC to lower the IATs. Logs posted here from other users seem to show an FMIC upgrade allows the ECU to lower the boost as much as 1psi, which translates into a +10% UT on the PROcede. All you RevII guys who followed Shiv's ignition timing tuning FAQ can chime in better My FMIC was just installed yesterday so I will be testing soon

To the OP, if tune, intake, DPs, FMIC, exhaust is giving us 380-390whp ranges, then I think taking out the DP will put you in the 350-370whp range. Each car is different so don't just assume 340HP+ w/ tune + drop-in/intake.

Also consider Mustang vs Dynojet vs dyno day humidity/temp/airflow conditions. Don't get too hung up on dyno #s is what I'm saying. You may end up disappointed

The right question to ask is....how much whp gains over my stock baseline can I get using 91/93oct if I do everything except DPs?

Originally Posted by john boxter

ya my guess is you will be at 340 maybe? can you really crank up the proceede without downpipes? or is it to much backpressure going back into the turbos?

[john boxter]

that makes sense but are the stock downpipes that restrictive?

[blisstik]

Yes because they have cats in them. I'm not sure how many cells but its greater than 300. I'm guessing around 600? Also, there are secondary cats which makes it even more restricted.

AR Design sells catted DPs with 300 cell cats aka high flow cats. They also sell catless DPs aka straight down pipes, which has more flow and more power than catted one's.

Originally Posted by john boxter

that makes sense but are the stock downpipes that restrictive?

[OM3G@]

I hope this isn't thread jacking, it's related so maybe only 1/2 thread jacking. I know it's illegal to remove CATs but just how illegal is it? Would it just be like a fix-it ticket or can you actually have your license suspended?

[Borsig]

Originally Posted by OM3G@

I hope this isn't thread jacking, it's related so maybe only 1/2 thread jacking. I know it's illegal to remove CATs but just how illegal is it? Would it just be like a fix-it ticket or can you actually have your license suspended?

you just wont pass emissions.

If you leave on your secondaries you might still.

[Daya]

[quote=Borsig;5923469]FMIC - a good one - is goign to give you 10 HP at stock boost..

QUOTE]

I am running AMS FMIC and I got +11whp on stock boost. With the mods listed in my sig I got 300 whp and 306 wtq

[MSPORTWORLD]

Refer to my previous post without DP's or Intercooler. Will dyno with intercooler and new Procede maps sometime in the near future.

http://www.e90post.com/forums/showthread.php?t=250979

The PROcede piggyback delivered as promised: +86whp/+87wtq

I am a very happy customer (I also found out on a stretch of closed highway that the speed delimiter works)

Vehicle Information:
-2008 E90 335i MT, 5k miles
-PROcede CANbus Stg 1 Maps
-BMS DCI & MFD Scoops
-94 Octane Sunoco
-64-65 degrees F, 29.79 in-Hg, 8% Humidity
-Correction: STD for comparison purposes

Here is the breakdown of the 5 runs (2-3 mins wait between first 4 runs, 5 mins wait between runs 4 and 5):
-Run1: Valet Mode (Essentially Stock) 284/296
-Run2: Stg1 Doomsday 2-19 Map @ 90% User Torque 359/370
-Run3: Stg1 Doomsday 2-19 Map @ 60% User Torque 322/339
-Run4: Stg1 Doomsday 2-19 Map @ 90% User Torque 357/367 (Verifies Repeatability)
-Run5: Stg1 Non-DD 3-24 CANbus Beta Map @ 100% User Torque 370/383

[Former_Boosted_IS]

Originally Posted by hkyplaynazn

Refer to my previous post without DP's or Intercooler. Will dyno with intercooler and new Procede maps sometime in the near future.

http://www.e90post.com/forums/showthread.php?t=250979

The PROcede piggyback delivered as promised: +86whp/+87wtq

I am a very happy customer (I also found out on a stretch of closed highway that the speed delimiter works)

Vehicle Information:
-2008 E90 335i MT, 5k miles
-PROcede CANbus Stg 1 Maps
-BMS DCI & MFD Scoops
-94 Octane Sunoco
-64-65 degrees F, 29.79 in-Hg, 8% Humidity
-Correction: STD for comparison purposes

Here is the breakdown of the 5 runs (2-3 mins wait between first 4 runs, 5 mins wait between runs 4 and 5):
-Run1: Valet Mode (Essentially Stock) 284/296
-Run2: Stg1 Doomsday 2-19 Map @ 90% User Torque 359/370
-Run3: Stg1 Doomsday 2-19 Map @ 60% User Torque 322/339
-Run4: Stg1 Doomsday 2-19 Map @ 90% User Torque 357/367 (Verifies Repeatability)
-Run5: Stg1 Non-DD 3-24 CANbus Beta Map @ 100% User Torque 370/383

You sure its safe to run that 100% torque with no dps and no aftermarket intercooler? Did you log the runs because it looks like there are some knock events, especially at the end of that 370 rwhp run.

[MSPORTWORLD]

Originally Posted by Former_Boosted_IS

You sure its safe to run that 100% torque with no dps and no aftermarket intercooler? Did you log the runs because it looks like there are some knock events, especially at the end of that 370 rwhp run.

This was basically done as a glory run so I did not do any datalogging. Keep in mind that this is also the 3-24 maps which defaulted to 90% user torque so 100% on stage 1 is nothing too crazy.

[Former_Boosted_IS]

Originally Posted by hkyplaynazn

This was basically done as a glory run so I did not do any datalogging. Keep in mind that this is also the 3-24 maps which defaulted to 90% user torque so 100% on stage 1 is nothing too crazy.

It does show up on run 2 and 5 though at 6000-6500 rpms. I am not saying it was anything major, but you could have been pushing your octane and not something people should expect to run daily on their car. With only intake.

[Yinger]

i got 360 rwhp without downpipes... haven't tried dynoing it with downpipes on though.

[645Nm]

Converted from KW & Nm:

391.58 HP
417.40 lb/ft

RPI FMIC
BMW perf exhaust
K&N drop-in filter
JB3 Map 8
Race gas (100 oct)

My goal: 412 HP with the new JB 1.4 beta on map 9 and 105 (oct)

[john boxter]

but are downpipes more of a safety measurment

[645Nm]

Originally Posted by john boxter

but are downpipes more of a safety measurment

catless DPs will unlock serious HPower. My DPs will go back on after i have achieved my 400 odd HP goal...want to do it just for my own personal record.

John, the real question one has to ask is: What is your goal with the car?
You see if you want better fuel consumption and better performance from you car compared to stock than a tune (whether piggyback or software tuned) is more than adequate and many drivers including myself will be more than happy for many years to come...my 120d a good example - i had it for 4 years now and chipped it a month after purchasing...she has deen doing fine (fuel consumption amazing) since then and i have not felt the need to do ANY other mods to the car other than the tune. I also chipped (only) two other vehicles of mine for precisely the same reason.

But my goal with my one 335i is entirely different. Every mod so far has been to create a performance oriented street machine with strong 0 - 100 sprint times...that might not win every street race but that can compete fiercely...thats why i started with a great aftermarket suspension to create a solid foundation...also my performance needs is not always suitable for daily cruising...this is a sacrifice i am willing to make since the 120d or another fulfills the daily requirements.

Of course i have not achieved all my goals yet, but each mod must contribute to it. Hope i was not off topic and talking shit now...