mikecl713

i just finished installing the comptech sc + ac with the 4 " pulley...
is it ok to drive short distances to get the car tuned or do i need to mess with the FPR for that?

cjb80

The fuel pressure regulator is designed to change your fuel pressure based on your air pressure. It delivers 8 psi of additional fuel pressure for every 1 psi of air pressure above atmospheric (0psi on a boost guage.) Therefore, if it does create more boost pressure, then it should deliver more fuel to compensate. The problem is timing however, which remains stock, and therefore is not safe.

Anyways, you should be fine revving it out until 6000-7000 rpm before you have any problems. If you don't floor the car everywhere you'll have no problems.

Get it tuned!

Chris

revhi

Im in the same situatuion. The closest dyno is like 1 hour drive. Im getting a wideband to tune it for now so I can safely drive to the dyno.

kane.s2k

Umm....you can cruise with the FPR on no problem. Just dont gun it.

revhi

oh, im tuning an emanage with the wideband not just the fpr

mikecl713

so itll drive normal?
no bogging or anything

Sub-Zero

I drove mine for a month with the exact same setup you have. I just didn't race it. Then I drove it 3 hours to get it tuned. No problems. In addition to tuning the AEM computer and wideband O2, I also got 440 injectors. I did 315 rwhp on a very humid day and he left it a little rich for an everyday driver. It still has more potential.

FF2Skip

jcarlton- Are you running a single or dual exhaust? Cat or straight pipe? Since you mention everyday driving, I assume you have the cat in place. Also, with only the 7lbs pulley, did you need to get the bigger injectors or are you playing it safe? My Comptech is getting installed next month and I'm not an expert by any stretch of the imagination. Doing mucho reading though! Thanks.

Sub-Zero

My 4in pulley puts out 8 psi at the intake even with the aftercooler. I have an RM racing dual exhaust with a high flow cat. You don't need bigger injectors but most people recomend them. I did it to insure enough fuel under all conditions and to keep the duty cycle down.

NoIP-S2000

Hey Jcarlton, how about a bigger copy of your avatar?