Just got a 1999 GTP

**camopaint0707** · 01-25-2013

Just bought a 1999 Grand Prix GTP. 159000 miles on it. Anything I should be ready for to fix or anything like that? Also where is a good place to start modding for more power? I was thinking of a zzp stage 2 kit.

**JDrach** · 01-25-2013

Screw the kits. Check LIM gaskets, trans n motor oils, make sure there's no knocking and rattling. Should posts pictures of it by the way. And I'd stay away from zzp's kits. Yes they have good parts, but they're not worth the price with how they're combing certain parts together that might not entirely be "safe"
Read this http://www.grandprixforums.net/safel...0-a-67580.html

**gptuner** · 01-25-2013

I'm with Drach, LIM gaskets, and service the trans, ZZP's trans shift kit is a good product too, add an external trans cooler.

Decent mods to start with would be a 3.5 pulley, downpipe, highflow cat, (ubend delete) and an air intake with at least a pretuned PCM or dyno tune

Although at your mileage id consider changing the valve springs as a smaller pulley will probably cause the stock springs to float the valves enough to kill a decent amount of power

**camopaint0707** · 01-26-2013

So what about this kit for power to start. ZZPerformance - Stage 2 Performance Package #ZZ-STG2PP
LIM I assume is lower intake manifold gasket? Are those known to wear? What about getting a cam set?

**REDCRAPGP** · 01-26-2013

Don't buy any of those stage kits Zzp sells.

**REDCRAPGP** · 01-26-2013

Get to reading this

http://www.grandprixforums.net/safel...0-a-67580.html

**locuno1** · 01-27-2013

read this to just for some good info

http://www.grandprixforums.net/97-03...ems-60802.html

**camopaint0707** · 01-27-2013

That's quite a long list of issues.

**sickhix04** · 01-27-2013

I have a 99 GTP as well with 164,000 and the coolant elbows just went out. It was leaking like crazy and I still drove it for about a month to work and back filling it with mostly water before all drives. I ended up getting a new thermostat, upper and lower hoses, flush, elbows... I change the oil regualrly and run premium but other then that I haven't had any engine issues since I bought the car with 80,000 miles. Fun reliable car

**camopaint0707** · 01-27-2013

I certainly hope so. The transmission issues are what worries me the most.

**locuno1** · 01-27-2013

i also have a 99' gtp with 219k on it now i haven't had any problems only thing I've replaced so far in the seven months that i owned it was the steering rack, tie rods, and thermostat. I also need to do the control arms since the bushings are bad

**camopaint0707** · 01-27-2013

Only thing was the steering rack AND tie rods AND thermostat AND control arms? Quite a bit of issues.

**dsmuts** · 01-27-2013

It's all easy stuff though

**camopaint0707** · 01-27-2013

Well once I finally pick mine up I'm gonna do all the maintenance stuff before I start slapping on horsepower. What about regearing the car? Something like this ZZPerformance - Gear Ratio Conversion Kit #ZZ-GRCK