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Originally Posted by TalonFiero
The big problem with making more power is the stock blower sucks with anything smaller than a 2.8" pulley without an intercooler. The engines are pretty damn durable but they like to leak oil and coolant eventually.
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A number of guys of the grand prix forums have put down well over 300whp with the same mods I have. But I have no personal data to back that up yet. The thing is with superchargers is that you basically know what you are going to make before you buy the part within reason. Since most of the bolts on are very common and have been tested thousands of times before. Unless your car is really low on compression or has something else wrong with it you usually make close to what they say you are going to make.
Alot rides on how you have your PCM setup too, with regards to timing and fuel maps. A lot companies aren't as aggresive or knowledgeable when re flashing PCMs with these cars. It makes a lot of difference in performance.
And the times are pretty accurate, there is really no point in even running them at the track since they are so damn heavy and FWD. It would take 400whp+ to get well into the 12s.