COBB difference between stage 1 and 2 aggressive maps?

aaaugustine29 · 05-15-2015, 08:07 AM

I am about to go stage 2 Cobb on my n55, and I am a technical guy, and I noticed something. The stage 2 aggressive and stage 1 aggressive maps seem to be almost identical in terms of parameters and load request. I was curious if there is something I was missing and somebody could clear that up, or if im correct and there really is no difference. Thanks! and if this has been addressed before, I couldn't find it, so sorry.

olivojoe · 05-15-2015, 08:10 AM

Quote:

Originally Posted by aaaugustine29

I am about to go stage 2 Cobb on my n55, and I am a technical guy, and I noticed something. The stage 2 aggressive and stage 1 aggressive maps seem to be almost identical in terms of parameters and load request. I was curious if there is something I was missing and somebody could clear that up, or if im correct and there really is no difference. Thanks! and if this has been addressed before, I couldn't find it, so sorry.

Not sue about technical parameters and performance gains, but I know it does keep the DME from searching for the O2 sensor fault that comes with the Cat-less DP, so you won't get the SES light every time you touch the throttle...

feignaw · 05-15-2015, 11:00 AM

I don't have ATR in front of me right now to compare the maps, but check out the map notes to see what each was designed to do:
https://cobb.app.box.com/BMW-N55-Map-Notes

It says stage1 and stage2 are designed to make close to the same boost levels and their expected power improvements are the same.

aaaugustine29 · 05-15-2015, 09:02 PM

Thats really interesting to me. Why have the downpipe if both of the maps are the same? I had always heard that a downpipe unlocked a decent amount of horsepower with the proper map (20+whp). Any possibility this is a mistake from cobb?

Longdoggy · 05-16-2015, 12:29 AM

That is a bit odd. But I suppose it's just easier on the turbo with the DP due to improved flow.

Stage 1 aggressive does have some nice kick to it.

Longdoggy · 05-16-2015, 09:45 AM

So I was driving around this morning and my cobb OTS stage 1 aggressive map peaked at 15.4 psi of boost. And I really was not gunning it.

mike@x-ph.com · 05-16-2015, 01:17 PM

Cant check the map on my ATR because i have an N54 but go to boost control table -> WGDC -> and check the main table , P and I and D.
These 4 tables control boost, i am positive that for the stage 2 they are more aggressive.

classyfast · 05-18-2015, 09:22 PM

Great question Op was thinking the same thing when i saw the parameters. Now my question is if I'm stock dp and fmic then chose to run the stage 1+ fmic (or if that's stage 2) with just a cp, 93 Oct, and exhaust......would I have problems?

My mode of thinking is that stage 1+ fmic ups the boost a bit to compensate for fmic pressure drop, but since the stock fmic is decent I was thinking that would just up my boost for a bit more power?? Was going to experiment with that or protune!! What do you guys think?

Longdoggy · 05-20-2015, 08:00 PM

Quote:

Originally Posted by classyfast

Great question Op was thinking the same thing when i saw the parameters. Now my question is if I'm stock dp and fmic then chose to run the stage 1+ fmic (or if that's stage 2) with just a cp, 93 Oct, and exhaust......would I have problems?

My mode of thinking is that stage 1+ fmic ups the boost a bit to compensate for fmic pressure drop, but since the stock fmic is decent I was thinking that would just up my boost for a bit more power?? Was going to experiment with that or protune!! What do you guys think?

I'm curious on this too. Can I run FMIC Stage 1+ with stock FMIC. I mean it is a decent FMIC I suppose. So why not for a little extra boost?

Try it and let me know how it goes. Lol

Also I was doing some driving and testing last night. Stage 1 aggressive peaked at 16.6psi

Aaron_N55 · 05-20-2015, 11:18 PM

Are those peaks because of throttle closure? Because sometime I data log and the peak due to throttle closure would be like 17PSI. However in reality the logs show like 10ish-12ish.

Longdoggy · 05-21-2015, 05:13 AM

Quote:

Originally Posted by Aaron_N55

Are those peaks because of throttle closure? Because sometime I data log and the peak due to throttle closure would be like 17PSI. However in reality the logs show like 10ish-12ish.

Yea peaks

surfcali · 06-05-2015, 12:52 PM

I've been running Cobb Stage 1 Sport + FMIC without an aftermarket FMIC. Much more power. You'll love it.

classyfast · 06-07-2015, 12:23 AM

Quote:

Originally Posted by Longdoggy

Quote:

Originally Posted by classyfast

Great question Op was thinking the same thing when i saw the parameters. Now my question is if I'm stock dp and fmic then chose to run the stage 1+ fmic (or if that's stage 2) with just a cp, 93 Oct, and exhaust......would I have problems?

My mode of thinking is that stage 1+ fmic ups the boost a bit to compensate for fmic pressure drop, but since the stock fmic is decent I was thinking that would just up my boost for a bit more power?? Was going to experiment with that or protune!! What do you guys think?

I'm curious on this too. Can I run FMIC Stage 1+ with stock FMIC. I mean it is a decent FMIC I suppose. So why not for a little extra boost?

Try it and let me know how it goes. Lol

Also I was doing some driving and testing last night. Stage 1 aggressive peaked at 16.6psi

I tried it tonight, pretty awesome on stg 1 aggressive + fmic (with stock fmic)! Try it

akerns429 · 06-07-2015, 08:24 PM

I have been doing some research and chatted with Cobb as well. It sounds like the difference between Stage 1 Aggressive and Stage 2 (Which the downpipe is recommended) would be the torque. Looking at a couple of their dyno charts, they are only getting maybe 1 more HP with Stage 2, but the torque is around 400 ft. lbs.

I just installed stage 1 aggressive yesterday and you can definitely feel a difference compared to stock! The throttle response is much more responsive and it feels like it pulls much harder throughout the entire power band. I used the built in 0-60 and quarter mile time and my 0-60 was 4.6 seconds with a 13.2 sec. 1/4 mile time @ 106 mph. Not sure how accurate it is, but I'm sure it's close. I think with the downpipe and stage 2, I'll be under 13 seconds.

05-15-2015, 08:07 AM	#1
aaaugustine29 New Member 3 Rep 15 Posts Drives: 335xi Join Date: Nov 2014 Location: Charlotte, NC iTrader: (0)	COBB difference between stage 1 and 2 aggressive maps? I am about to go stage 2 Cobb on my n55, and I am a technical guy, and I noticed something. The stage 2 aggressive and stage 1 aggressive maps seem to be almost identical in terms of parameters and load request. I was curious if there is something I was missing and somebody could clear that up, or if im correct and there really is no difference. Thanks! and if this has been addressed before, I couldn't find it, so sorry.
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05-15-2015, 11:00 AM	#3
feignaw Private 2 Rep 86 Posts Drives: 2011 135i DCT Join Date: Mar 2015 Location: NM iTrader: (0)	I don't have ATR in front of me right now to compare the maps, but check out the map notes to see what each was designed to do: https://cobb.app.box.com/BMW-N55-Map-Notes It says stage1 and stage2 are designed to make close to the same boost levels and their expected power improvements are the same.
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05-15-2015, 09:02 PM	#4
aaaugustine29 New Member 3 Rep 15 Posts Drives: 335xi Join Date: Nov 2014 Location: Charlotte, NC iTrader: (0)	Thats really interesting to me. Why have the downpipe if both of the maps are the same? I had always heard that a downpipe unlocked a decent amount of horsepower with the proper map (20+whp). Any possibility this is a mistake from cobb?
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05-16-2015, 12:29 AM	#5
Longdoggy Master Bates 80 Rep 495 Posts Drives: 2020 BMW M340 xDrive Join Date: Jun 2014 Location: New York iTrader: (0)	That is a bit odd. But I suppose it's just easier on the turbo with the DP due to improved flow. Stage 1 aggressive does have some nice kick to it. __________________ CURRENT: 2020 G20 M340 xDrive — Carbahn Tune RETIRED: 2011 E90 335i xDrive — Cobb AP3, PE Exhaust, Alpina TCU Flash, VRSF Charge Pipe 2017 Estoril Blue X1 M Sport — JB4
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05-16-2015, 09:45 AM	#6
Longdoggy Master Bates 80 Rep 495 Posts Drives: 2020 BMW M340 xDrive Join Date: Jun 2014 Location: New York iTrader: (0)	So I was driving around this morning and my cobb OTS stage 1 aggressive map peaked at 15.4 psi of boost. And I really was not gunning it. __________________ CURRENT: 2020 G20 M340 xDrive — Carbahn Tune RETIRED: 2011 E90 335i xDrive — Cobb AP3, PE Exhaust, Alpina TCU Flash, VRSF Charge Pipe 2017 Estoril Blue X1 M Sport — JB4
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05-16-2015, 01:17 PM	#7
mike@x-ph.com BimmerPost Supporting Vendor 24093 Rep 190,630 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Cant check the map on my ATR because i have an N54 but go to boost control table -> WGDC -> and check the main table , P and I and D. These 4 tables control boost, i am positive that for the stage 2 they are more aggressive. __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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05-18-2015, 09:22 PM	#8
classyfast Banned 669 Rep 2,219 Posts Drives: e36m/e46m/E92 LCI 335/f30 335 Join Date: Mar 2015 Location: CT iTrader: (0)	Great question Op was thinking the same thing when i saw the parameters. Now my question is if I'm stock dp and fmic then chose to run the stage 1+ fmic (or if that's stage 2) with just a cp, 93 Oct, and exhaust......would I have problems? My mode of thinking is that stage 1+ fmic ups the boost a bit to compensate for fmic pressure drop, but since the stock fmic is decent I was thinking that would just up my boost for a bit more power?? Was going to experiment with that or protune!! What do you guys think?
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05-20-2015, 11:18 PM	#10
Aaron_N55 Lieutenant 56 Rep 425 Posts Drives: F82 M4 Join Date: Nov 2012 Location: NY iTrader: (3)	Are those peaks because of throttle closure? Because sometime I data log and the peak due to throttle closure would be like 17PSI. However in reality the logs show like 10ish-12ish. __________________ E92 335XI M-Sport - BSM, CR, 6MT, KW Variant 3, Cobb V3, PSS, ETS Charge Pipe and BMS Intake
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06-05-2015, 12:52 PM	#12
surfcali Second Lieutenant 245 Rep 240 Posts Drives: 2016 M3 Mineral White Join Date: Nov 2012 Location: Westwood iTrader: (1)	I've been running Cobb Stage 1 Sport + FMIC without an aftermarket FMIC. Much more power. You'll love it.
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06-07-2015, 08:24 PM	#14
akerns429 Private First Class 32 Rep 197 Posts Drives: '15 f22 BMW m235i Join Date: Jul 2014 Location: spain iTrader: (1)	I have been doing some research and chatted with Cobb as well. It sounds like the difference between Stage 1 Aggressive and Stage 2 (Which the downpipe is recommended) would be the torque. Looking at a couple of their dyno charts, they are only getting maybe 1 more HP with Stage 2, but the torque is around 400 ft. lbs. I just installed stage 1 aggressive yesterday and you can definitely feel a difference compared to stock! The throttle response is much more responsive and it feels like it pulls much harder throughout the entire power band. I used the built in 0-60 and quarter mile time and my 0-60 was 4.6 seconds with a 13.2 sec. 1/4 mile time @ 106 mph. Not sure how accurate it is, but I'm sure it's close. I think with the downpipe and stage 2, I'll be under 13 seconds.
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