Thread: Pcm info. Whats the best choice?

Originally Posted by a98gtp4u

I have a 98 gtp. It has a 3.4 pulley, 3" catless downpipe, no ubend, 3" exhaust split to 2.5" turbo mufflers, fwi, 180* stat, 8 mm wires, al 104's, crankcase breather, (soon to come: Headers). What is the best pcm to get for this car? I hear good and bad things about the zzp 1.0, i want something economical of course and that works how its supposed to. So i just wanted to get some advice.

Thanks.

Where have you heard good things about ZZP beside from zzp? :P

All i hear about ZZP's pcms are how bad they are.

Overkill PCM's are good, Intense and i believe reptile does them (not sure).

You'd get a more in depth response here.

Originally Posted by a98gtp4u

Is there a specific website or is it just overkill.com?

His site. :: Overkill Motorsports ::

His email. willoverkill@gmail.com

Originally Posted by a98gtp4u

Ok, thanks man.

NP, actually stumbled on this too.

http://www.grandprixforums.net/f65/i...ill-18630.html

3800performance.com still sells the best mail order PCM for the 3800.

DHP 1.0 PCM.

Get it...nothing else.

Originally Posted by a98gtp4u

I have a 98 gtp. It has a 3.4 pulley, 3" catless downpipe, no ubend, 3" exhaust split to 2.5" turbo mufflers, fwi, 180* stat, 8 mm wires, al 104's, crankcase breather, (soon to come: Headers). What is the best pcm to get for this car? I hear good and bad things about the zzp 1.0, i want something economical of course and that works how its supposed to. So i just wanted to get some advice.

Thanks.

why are you running a breather?

Originally Posted by a98gtp4u

I just thought it looked good. It hasnt caused any problems or anything. Y? Should i remove it? Engines been running a bit cooler since i put it on. Also on these pcm's, did any of u have to do the case learn?

Yes, a case lean needs to be done. Get rid of that breather, all its doing is causing a huge vacuum leak. You only want to run a breather if your pcv is blocked, for example some intercoolers block the pcv.

Originally Posted by 99prixgt

Get rid of that breather, all its doing is causing a huge vacuum leak. You only want to run a breather if your pcv is blocked, for example some intercoolers block the pcv.

The pressure just recirculates into the intake anyway doesn't it? With a breather it would escape into the environment.

How does this cause problems? ( i am not to knowledgeable on this particular subject hence my curiosity)

Originally Posted by a98gtp4u

Thats what im saying. It shouldnt. All it does is vent those gasses relieving he pressure in the crankcase.

^wrong...

Originally Posted by DnaProdigy

The pressure just recirculates into the intake anyway doesn't it? With a breather it would escape into the environment.

How does this cause problems? ( i am not to knowledgeable on this particular subject hence my curiosity)

First off all air is metered. Adding a breather to your car with a functioning pcv, lets air out making you have lack of vacuum pressure a.k.a Big mother vacuum leak. On a side note, your car can possibly go lean with a breather...I try to avoid them like the plaque.

When I did my gen5 swap, I modified my adapter plate for my N* so i didn't have to run a breather.

Originally Posted by a98gtp4u

Well then maybe itll even me out cause i know im runnin rich as hell when i got a catless downpipe.

no your engine is running the same. Now you can smell the gas, since your cat-less.

So anyways...

Get a DHP.

Originally Posted by 99prixgt

First off all air is metered. Adding a breather to your car with a functioning pcv, lets air out making you have lack of vacuum pressure a.k.a Big mother vacuum leak. On a side note, your car can possibly go lean with a breather...I try to avoid them like the plaque.

When I did my gen5 swap, I modified my adapter plate for my N* so i didn't have to run a breather.

Ah gotcha, tnx!