chrisoneil4

hey there guys, kinda new here just got a 2012 evo x gsr a couple months ago and had a few questions about getting some exhaust bolt ons and tuning the car with my accessport, my question being could i use the OTS stage 2 map with a high flow cat and a cat back exhaust and be ok even though it says turboback exhaust?

please let me know if posted this in the wrong place or not.

any help would be appreciated!

thanks guys

COBB Tuning

We recommend a full turbo-back because we have seen cases where cars that are pushed hard for extended periods of time (think track session, long highway pulls, etc.), can build up heat and cause knock. If you decide to run the Stage 2 map without the downpipe, I would recommend logging the car and monitoring knock sum. I also would recommend not driving the car aggressively for prolonged amounts of time. Going WOT in short bursts here and there will more than likely be fine but you will just want to monitor the car until you replace the downpipe.

-Eric

chrisoneil4

thanks eric,

LastX

How about Stage 1 with cat back and cosworth drop in?

Thanks,

COBB Tuning

We have not tested a Cosworth panel filter, so I can not say with 100% certainty that it will or will not work using our CHFF map. I would recommend closely monitoring LTFT and STFT to make sure they do not go outside of a +/-8% range. If they do, you would want to either switch back to the stock filter or modify the MAF scaling as well as the Load Comp. tables to work with the filter. A forum member made a tool that works pretty well that will assist you in modifying those tables.

-Eric

LastX

Okay, I assume I would be okay then with a stage 1, cobb filter and cat back?

COBB Tuning

Yes that part configuration will work just fine.

-Eric