Hey guys I'm actually posting for a friend, He'* picked up a 2000 SSEI and is looking into mods for it. Nothing major but he/we are thinking header, intake, chip, and pully(*). What is everybodys recomendations for making modest power gains. I read that some mods will actually create less boost and certain pullies will bring it back up. Sounds confusing to me, so I'll rely on your expertise. Any and all help is much appreciated. Most likely looking to spend <$1500 total on mods not including wheels and suspension.

Thanks

If he does nothing more than headers, his INDICATED boost will be lower. This is desirable, as it shows the engine is flowing properly. Boost pressue, as indicated by the boost gauge, is boost that is NOT being used. You need to increase the CFM'* flowing through the engine to make the most of it.

If you decrease pulley size, your indicated boost will increase. But it may induce KR. At that point, you install Ported Exhaust Manifolds, headers, rockers, or a cam to combat the KR. Your boost indicated will then decrease slightly. It'* a game. Mod, get KR, kill KR, mod, get KR, kill KR.

In the long run, it'* FLOW RATE that matters, not boost PSI.

There are some good articles in Techinfo (link at the top of the page) to get you started, and the two primary performance vendors are www.intense-racing.com and www.zzperformance.com , but there is also www.grandprixstore.com , PulleyBoys, thrasher, DHP, W-body Store, and a few others.

Keep in mind that just about anything for the engine is the same as the Grand Prix, and don't mess with the exhaust until you hit the 13'* on the quarter mile.

Is it stock now?Do a search in this section and you will find everything you need.Starters usually are 180 thermostat, intake (CAI or FWI go to intense sight and they have a good FWI and PCMs ) also cooler plugs.You can also change your pulley to a 3.5 or 3.4 depending on mods.This is for starters,Once you get to this stage then you can worry about headers and smaller pulleys, exhaust.