Anyone familiar with Cobb Tuning Accessport?

Is anyone famliar with Cobb Tunings accessport and running stage 2 maps with turboback exhaust? Is turboback exhaust just the downpipe and catback? Or does it also consist of the up pipe as well? If i run just the downpipe and catback exhaust and my stage 2 programmer ( which increases my boost to approx 16psi max) is that going to make my car run too lean, hot? What is the max psi that the WRX (04) should handle? Any information will help! Thanks!

The up pipe is a whole other story for a whole other day and is not part of the turboback. I was looking into getting the stage two myself, but just am not willing to risk grenading the engine on a car that I already drive way too fast and put way too much gas in. This also will void your warranty on anything that gets ruined by the extra power. Dunno if this affects you or not. I know it did my. I'm gonna save the power mods for a cheaper car that I don't need to drive to work everyday. But that's just me.


BTW Cobb has all the answers to your questions on its snappy website.

Actually, speaking to my local dealer, they will honor the warranty provided the parts are professionally installed and tuned and that it remains possible to return the car to stock configuration with ease.

I would get them to sign something stating that they would still honor the warranty. Are you thinking of doing a Stage 2 freakray?

Dealerships are for the most part lenient if all you have is a turbo back and accessport as far as warantee work is concerned. Your mileage may vary.

Also to the OP: The Cobb AP is by far the most popular engine management for Subarus. The ease of use, and proven results make it an easy choice for EM.

If you want to run stage 2 you will need at minimum an aftermarket downpipe. If you leave the exhaust stock you can run the stage 1 map which will only increase the boost slightly. You will see more gains with a complete turbo back exhaust (downpipe and catback) than with just the downpipe however. We haven't had anyone have problems with this set up, in fact I have had my car with the AP and turbo back for about 2 years now. :)

-Ty
www.pandlmotorsports.com

What has it done to your gas mileage? How has it changed the feel of the throttle. The one thing I don't like about my car is it just feels kinda dead over 4k rpms. Does stage 2 fix some of this flatness? Guess I've driven hondas too long.

What has it done to your gas mileage? How has it changed the feel of the throttle. The one thing I don't like about my car is it just feels kinda dead over 4k rpms. Does stage 2 fix some of this flatness? Guess I've driven hondas too long.

As with any engine modification: the more horsepower available, the more gas can be consumed. As long as you can stay off the go pedal, mileage change should be insignificant. Throttle feels nice, It pulls hard at a bit under 3k rpm (I have a 2.0l you've got a 2.5l, so you may feel it start pulling earlier) and is a VERY noticeable increase in power over stock. Unfortunately the flatness you are noticing is due to the size of the turbo more than anything. The wee little tdo4 can not push enough air at higher RPMS to hold peak psi to redline.

I can't stay off the go pedal. You'd think I would have outgrown it by now. :) I gotta find someone around here with a stage 2. If it isn't enough to make me happy I'll just stay stock and get a bike instead. I drove an '07 STI a couple of months ago and was really dissapointed by the lack of feel of acceleration under full throttle. I loved the low speed growl of the exhaust though and the handling was lightyears ahead of my car.