Hello!

New to the fourms and wanted to ask a question. Currently I have the following on my 99' Grand Prix GT (If it matters, has about 70k on it, with a recent tune up, full check):

U bend delete
Motorsports CAI (more like an open air intake)
SLP Loudmouth
DHP 1.0 PCM

I was just wondering if there is anything I should do as I plan to contiune modding (thinking headers next). Anything I should do with the plugs? wires? is a trans. fluid cooler a bad idea? Gonna do a tsat soon. Car's been running great, had it for 2 years, 0 problems outside of the AC dont working on "1," which doesn't really bother me.

These forums are great, tons of good info :) thanks for any help!

Mike

New plugs and wires are always a good idea. Headers will open up the exhaust and allow the engine to breathe much better. The t-stat will increase performance somewhat as well by keeping the engine cooler. The trans cooler is an excellent idea especially if you are going to hot rod it a bit. Heat is the killer of transmissions and a cooler is cheap insurance. As for the fan working on 1 you will need a new blower motor resistor. It is located next to the fan up under the dash. If you don't change it the fan will eventually only work on 5.

Sounds like your GT will be a nice ride man, I can't want to start to modify my '00 GT as soon as I get some extra cash (yea, I know, no such thing....haha)

But, I have a question, My fan does not work on 1 either, how much would it cost to but a new blower motor resistor? Can i install it myself and save money?

Thanks a lot

Forgot where I saw it, but its about a 20-25 dollar part, and is a do it yourself type of thing. I'll get back to you soon as I'm going to replace mine.

Good luck :)

The resistor can be replaced by anyone with basic hand tools. I recommend you remove the passenger seat for better access. It is way up under the dash. Remove the fan and motor and the resistor is next to the fan. Takes a couple of screws to remove and replace. Resistor costs between $25 and $40 depending on where you purchase it.

not to be a dick or anything, but why waste hundreds even thousands trying to mod a gt...you'll never get the performance you want out of it..the only thing i would do to a gt besides an intake would put a turbo on it for a couple grand, and youll run low 12's....the thousand dollars you already spent cut not even a second off quarter mile times, and when you want a faster car you will never get your money back out of it with the miles already on it.

I'm modding the GT because it's my current platform, and as of now, I have no other choice in cars. I mean, sure the engine is not as fast as the gtp's. but with the proper work it can get there, unless, of course, someone can list a few engines that will fit in my frame and give me about 400+HP without causeing damage?