[IDriveACamryNow]

I am having some issues with the Cobb IJCOS Stage 2+FMIC Aggressive 402 map. I have used this as my default map for the last 3 months and have just started to use the E30 maps.

I did some dyno runs to also do some 4th gear logs and did the Stage2 maps first as a baseline. After 3 runs of this map, the power output seemed to be quite low for the amount of boost it was hitting (over 17psi). It was comparable to the output of a N54 with procede/jb4/other cobb maps that boost to 14-15psi. Looking at the logs, there were quite a few timing corrections over -3.

I know that these logs are in the format required for the E30 map but that is essentially what the testing was for. The subsequent E30 map run made ~40hp more than the stage2 map so I was quite happy with that result but am worried that there might be a problem with the map or my car on regular fuel. The E30 runs had no corrections and were fine according to the logs.

Could someone kindly have a look a these logs and see if there are any signs of problems besides the timing pulls? Or why they occur at all?

Mods - FBO (fully catless), LSD, Mr 5 intake, recently cleaned filters, fresh plugs and oil.

Cobb Stage 2+FMIC Agressive 402 logs.zip

[enrita]

Well probably a tad to aggressive, maybe gas related or iat related. You can drop some timings and see. You never logged the stage 2? Do you get postshift corrections on the e30 map between 3rd/4th gear?

[IDriveACamryNow]

Originally Posted by enrita

Well probably a tad to aggressive, maybe gas related or iat related. You can drop some timings and see. You never logged the stage 2? Do you get postshift corrections on the e30 map between 3rd/4th gear?

Looking at some of the logs I did on the street, there were occasional timing corrections but nothing that was consistent. Thats why I wanted to get on the dyno and see how it did.

[buylongterm]

Originally Posted by E90Company

Yes people have 2+ years with COBB.

It's because boost isn't the only thing that nets you power. Timing changes alone will make a huge difference. The difference between Stage2+A and E30 race map is timing, boost isn't even touched. Huge power bump there.

If you don't mess with the Duty Cycle maps in ATR/run the OTS maps, your turbos will apways be in their efficiency range no matter what, this is a flash tune with boost that will taper agressively from the peak you are seeing down low. With a piggyback that's easily possible to overspeed the shafts. 18psi at 4000rpm is a whole different ball game than 18psi at redline, because boost is simply a measure of resistance, not shaft speed.

Thank you. I was curious as well.

Its responses like this that led me to go with COBB over any other Mod.

[135Pats]

Originally Posted by buylongterm

Thank you. I was curious as well.

Its responses like this that led me to go with COBB over any other Mod.

For reference, E30 tapers from about 18.5psi midrange to about 12 approaching redline. That's a very steep taper, all the OTS stuff is on the conservative side and for good reason. Cobb is excellent.

[matty088]

Originally Posted by E90Company

Yes people have 2+ years with COBB.

It's because boost isn't the only thing that nets you power. Timing changes alone will make a huge difference. The difference between Stage2+A and E30 race map is timing, boost isn't even touched. Huge power bump there.

If you don't mess with the Duty Cycle maps in ATR/run the OTS maps, your turbos will apways be in their efficiency range no matter what, this is a flash tune with boost that will taper agressively from the peak you are seeing down low. With a piggyback that's easily possible to overspeed the shafts. 18psi at 4000rpm is a whole different ball game than 18psi at redline, because boost is simply a measure of resistance, not shaft speed.

Either way 50 rwhp with 8 psi is weak. But I hear you on te tapering off.

[Jeffman]

Originally Posted by matty088

Do people have two plus years of running a Cobb? I just ordered mine. I have some concern regarding the turbo longevity at the increased boost level. The Cobb essentially doubles the psi yet we only net 50 rwhp. That lends me to believe the turbos are out of their efficientcy range. My previous car was a rx7. As a point Of reference, adding 50% more boost, going from the stock 10 psi to 15 psi netted 130 rwhp. Intuitively it seems with the 335 the turbos will be working very hard but producing little. Are people's turbos lasting at these boost levels.

I've been running Stage 1 Agreesive, Stage 1+ Agressive, and ProTuningFreaks maps 93 and E40 maps for almost two years/14000 miles. Boosted up to 18+ psi in warm weather. So far no issues with the turbos.

[sickem]

Originally Posted by JHR

I've been running Stage 1 Agreesive, Stage 1+ Agressive, and ProTuningFreaks maps 93 and E40 maps for almost two years/14000 miles. Boosted up to 18+ psi in warm weather. So far no issues with the turbos.

Stock lpfp?

[Jeffman]

Originally Posted by sickem

Stock lpfp?

Yes sir.

[Jeef]

Jhr I'm guessing you don't drive much?

[sickem]

Originally Posted by Jeef

Jhr I'm guessing you don't drive much?

looks like he averages 7k mi per year from his post

[Da Dark Knight]

Originally Posted by E90Company

Yes it does. Sounds good.

Installed mine yesterday with stage1 sport st, I will try to collect some log data today.
should I post the results here?

[E90Company]

Originally Posted by Da Dark Knight

Installed mine yesterday with stage1 sport st, I will try to collect some log data today.
should I post the results here?

Yes. When you upload make sure to add ".txt" to the end of the file, or make a .zip as you can't upload CSV files.

[Ænema]

Originally Posted by E90Company

Yes. When you upload make sure to add ".txt" to the end of the file, or make a .zip as you can't upload CSV files.

I highly recommend going the .zip route. For whatever reason converting to .txt runs a chance of corrupting the data. Even if it doesn't it will not let me open the files in my favorite log viewing software. Also, if it's saved as a .zip it can be viewed on a smart phone

[E90Company]

Originally Posted by Ænema

I highly recommend going the .zip route. For whatever reason converting to .txt runs a chance of corrupting the data. Even if it doesn't it will not let me open the files in my favorite log viewing software. Also, if it's saved as a .zip it can be viewed on a smart phone

I've noticed that too. It's because some people change the extension rather than add .txt after .csv.

[Da Dark Knight]

Hi guys, I have attached 4 datalogs in the zip file from today's drive to the derntist
I however turned off the logging before hitting the highway, can someone go through and let me know what you see?

thx

[Ænema]

Originally Posted by Da Dark Knight

Hi guys, I have attached 4 datalogs in the zip file from today's drive to the derntist
I however turned off the logging before hitting the highway, can someone go through and let me know what you see?

thx

We need a log of a 3rd or 4th gear pull 2500rpms to redline. Normal/part throttle doesn't tell us anything

[E90Company]

Originally Posted by Ænema

We need a log of a 3rd or 4th gear pull 2500rpms to redline. Normal/part throttle doesn't tell us anything

+1. Full throttle the entire time.

[Da Dark Knight]

Originally Posted by Ænema

We need a log of a 3rd or 4th gear pull 2500rpms to redline. Normal/part throttle doesn't tell us anything

so I should pin it on the 3rd gear and then let off at the 4th gear?

[135Pats]

Originally Posted by Da Dark Knight

so I should pin it on the 3rd gear and then let off at the 4th gear?

2.5k-6.5k 3rd gear WOT the entire log.

[Da Dark Knight]

Originally Posted by 135Pats

2.5k-6.5k 3rd gear WOT the entire log.

pardon my ignorance, but whats a WOT?

so single log of 3rd gear 2500-6500rpm should suffice?

[andrew1182]

Originally Posted by Da Dark Knight

pardon my ignorance, but whats a WOT?

so single log of 3rd gear 2500-6500rpm should suffice?

Wide open throttle