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Catless and custom tune?


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I know there are issues with boost creep using the Cobb OTS Stage 2 map on catless vehicles. I am planning on going stage 2 soon and was planning on going catless. I would be planning on having a custom (Infamous) tune made for the vehicle. Would this custom tune eliminate issues such as boost creep?
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if they physically have the vehicle, they should be able to prevent this from happening, if it is just a tune sent via ftp to you based on specifications, then there is no garuantee

Yea, the Infamous tune is done by sending data logs over and getting your tune back. How would they not be able to prevent it that way? The tuner still gets to see data logs for the vehicle.

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I feel like this forum demonizes Cobb OTS maps. I was Cobb stage 2 for a few months and my car ran fine. You might get a little knock and some minimal boost creep, but most likely you'll get the same thing from an open source e-tune (especially in early revisions). If you already have an AP, then use the f**king thing. Then, when you get bored, add a few 2+ mods and get a new custom tune.

Just my .02

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+1 for infamous tune... I plan on finishing up my setup and getting one of his etunes. however If you dont want boost creep and you want to keep the ots tagte 2 tune, run my setup... I have a manual boost controller set at 19psi which is set .5 psi above my tune setting and with a mbc you never experience boost creep.
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I feel like this forum demonizes Cobb OTS maps. I was Cobb stage 2 for a few months and my car ran fine. You might get a little knock and some minimal boost creep, but most likely you'll get the same thing from an open source e-tune (especially in early revisions). If you already have an AP, then use the f**king thing. Then, when you get bored, add a few 2+ mods and get a new custom tune.

Just my .02

Even a Cobb rep on this board said they were going to stop making catless tunes because of issues. Plus I read their stage 2 tune notes and they say the exhausts that are less restrictive than theirs will cause these issues. A catless exhaust is certainly less restrictive than their catted turboback.

 

+1 for infamous tune... I plan on finishing up my setup and getting one of his etunes. however If you dont want boost creep and you want to keep the ots tagte 2 tune, run my setup... I have a manual boost controller set at 19psi which is set .5 psi above my tune setting and with a mbc you never experience boost creep.

I have been talking to Infamous and he was telling me that after the tune is set up correctly I shouldn't have boost creep/spike issues. Hopefully I can decide which downpipe I'm picking up and get a move on this.

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Show me a map for the LGT that Cobb advertises as being safe for an exhaust without a cat.

They don't have one...Hell, Cobb is having problems with their own catted DP overboosting!

I'm frustrated by hearing all of these issues related to Cobb tunes. I was going to use my AP to store my custom tune, but I may just sell it now and use a tactrax cable instead. I guess I should start looking at other options.

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Changing tools won't change anything.... If creep can be tuned out with a Tactrix OpenPort (and I'm pretty sure it can), then it can be tuned out with a Cobb AccessPort.

 

:whore: Infamous has the Cobb protuner software. I bought an AP, shortly after buying my car, because of it's ease of use. Data logging was a snap and Infamous turned out all my revisions in less than 3 weeks.

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How would they not be able to prevent it that way? The tuner still gets to see data logs for the vehicle.

without being able to run test on the tune made from the specifications that won't be able to asure that it is perfect, a perfect tune for one car will not be as perfect for another, even if they have the same setup, there are slight variations, granted this situation is a little anal retentive...

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without being able to run test on the tune made from the specifications that won't be able to asure that it is perfect, a perfect tune for one car will not be as perfect for another, even if they have the same setup, there are slight variations, granted this situation is a little anal retentive...

Isn't that that the whole point of data logging, sending your logs back, having your tune tweaked and then re-logging and repeating process?

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to a point yes, datalogging without a dino is a street tune, and honestly a street tune cannot be garuanteed, simple as that...when you are on a dino, you are in a controlled environment allowing you to run up the RPM range without any obsticles and the the measurements are more accurate...

 

my point is simple, if you want a garuanteed tune that will give you the least chance of boost creep, use a dino with a good tuner

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They don't have one...Hell, Cobb is having problems with their own catted DP overboosting!

I'm frustrated by hearing all of these issues related to Cobb tunes. I was going to use my AP to store my custom tune, but I may just sell it now and use a tactrax cable instead. I guess I should start looking at other options.

 

I am Cobb stage 2 with a Cobb Catted DP with no probs. What probs are they referring to? I also have a Grimmspeed electronic boost control solenoid. That may be helping over boost. I have not been doing any logging yet though.

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i have been on romradier, looks like you have done your homework on these ecu...question though, haven't found any confirmation about it, does the tuning software work with a 2005 2.5i? i did see that it is compatable with the 08 and 09 though.

 

Far as I can tell, only the 08 and 09 years of the 2.5i are supported.

 

Unfortunately there's a pretty low chance odds of more ECUs being supported. The guy who did the ECU reverse-engineering for RomRaider and EcuFlash has stopped, and he works for Cobb now. That was a brilliant move on their part. :)

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I am Cobb stage 2 with a Cobb Catted DP with no probs. What probs are they referring to? I also have a Grimmspeed electronic boost control solenoid. That may be helping over boost. I have not been doing any logging yet though.

There ya go. Cobb states their stage 2 tune is only guaranteed with their catted DP. I do recall a member on here having issues with boost creep while even using a Cobb TB! That's not very reassuring.

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There ya go. Cobb states their stage 2 tune is only guaranteed with their catted DP. I do recall a member on here having issues with boost creep while even using a Cobb TB! That's not very reassuring.

 

The car does have a full TB ( Borla CB).I had a Perrin manual boost controller on the car for awhile. I was over boosting with that on it. Only when I really got on the car though. I could not get that right;). Now with the Grimmspeed Electronic boost control solenoid it's much better. I would suggest getting a boost control solenoid. I talked to someone on Fast WRX.com and they said the car will be much happier with the solenoid. I have not had any probs since.

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I'd be amazed if an off-the-shelf tune worked properly with an upgraded boost control solenoid... did you get a custom tune when you switched the solenoid?

 

No I didn't. Car is running great though. I do plan on a Dyno Tune when the winter is over though.

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