Thread: PCM and Pulley upgrade

Heres a list of things to consider and probably do before getting a pulley:

(keep in mind this is what is recommended at the minimum)

- 3" Downpipe (with or without cat, your choice. Without cat you may fail emissions tests)

- Intake (either make a custom one for cheap or buy an expensive wizair, thrasher or K&N)

- Front Powerlog (the front exhaust manifold is supposedly very restrictive, the rear manifold is ok)

- PCM (If you haven't noticed Overkill is widely known here. There people on the boards who can retune your pcm also for probably cheaper. I myself went with the overkill)

- Pulley puller (you cannot and do not want to take that pulley off without the specific tool, M90 pulley puller. You can rent one from ZZP or buy your own)

- Belt (don't know exactly what size)

- Pulley (Press-on pulley or Modular. Modular allows you to take the pulleys off and on without the pulley puller. Initially you need the puller to take the stock pulley off, but thereafter you use allen wrenches I believe. The press-on pulley are for taking the pulley on and off only using the puller)

-Scan (Research KR (knock retard). Its something you don't want and your car has a lot of it. You have to make sure you don't have KR before you drop a pulley. KR is measured in degrees, some people stock see as much as 7 or degrees stock. Every car is a little different and will act different to mods, so "baby" your way into it so your engine doesnt blow up in your face)




Ok, this is minimum mods. Pretty soon a lot of people are going to chime in and say you need this and that and this. Our stock pulley is 3.8" With what is above you can go to a 3.5" depending on your KR situation. Theres some people on here who say you need stronger Rockers and Springs to move down farther, I would probably recommend that but with the 3.5" I personally think you are OK not doing that. Oh and remember your transmission doesnt like you. I would think about swticing to Dexron 6 and maybe adding a transmission cooler for peace of mind.

Places to buy ****: ZZP Performance (zzperformance.com)
W body Store (wbodystore.com)
3800Performance (3800performance.com)

Hope this helps understand a few things. This is the way I see it for the most part.

In addition to what he said I'd add a 180* stat and some AL 104 plugs. Oh and personally I would ditch 3in downpipe/powerlog combo and just go headers from the start, because if you ever want to mod further you're going to want headers anyway. Just trying to save you some trouble and headache, trust me I know.

oh yea i forgot about the 180 and plugs

im mid 14's with just an intake. how high up is your elevation?? i also had a plug wire half way off, on the back side. alot of other variables that i could have changed also but dident.

ha not you silly. im talking to the OP. if you can get it out the hole good mid 14's is doable.

you got the comp g with better suspension so that helps out the hole, plus you have 3.29 gears also the gen V blower so it runs pretty good.

http://www.3800performance.com/
ZZPerformance
W Body Store - Don't Take SLOW for an answer!
:: Overkill Motorsports ::

Originally Posted by Whitehispanic

does it matter if i just get the pcm first and the intake rather than getting the pulley and all the other upgrades or does it have to be all at the same time??

You'll be fine getting just the PCM and intake. DO NOT mess with pulley sizes until AFTER you have a sufficient amount of exhaust mods, which you will be able to determine by scanning. Since our cars are getting older and KR is becoming more of a problem I would suggest getting header's before you start dropping pulley sizes.

Originally Posted by Whitehispanic

how will the pcm know when the other mods are on or do i have to get a new pcm?? Sorry i ask so many questions i just want to make sure before doing something i am not supposed to do LOL

Aftermarket PCM's just have a generic tune, they aren't really mod specific. If you want a tune that is set up specifically for your car and the mods you have, then you're going to have to get a tuner. But to kinda answer your question if you get a pcm, you'll be fine with adding mods later, no need to change anything. Tuning it would be better, but for most cases it isn't really necessary.

overkill is designed specifically for your car. that is why everybody says there pcms are so good. but if you get a pcm and its only tunned for an intake and you wanna drop pulley sizes you will have to get a retuned.

Originally Posted by blowfishRus6

overkill is designed specifically for your car. that is why everybody says there pcms are so good. but if you get a pcm and its only tunned for an intake and you wanna drop pulley sizes you will have to get a retuned.

Not really. His PCM's are generically tuned for the specific mods, every car is different and will react differently to certain mods. What overkill is doing is basically just using an educated guess, it isn't specifically for HIS car.