Plenum

[dsnow]

2002 C4S manual

Does changing the stock plenum to an after market one give the engine any boost in noticeable performance and if so how much?

Thanks

southc4s

[dphatch]

2002 C4S manual

Does changing the stock plenum to an after market one give the engine any boost in noticeable performance and if so how much?

Thanks

southc4s

Have read many posts on that subject and I'm of the opinion that it will not boost performance any noticeable degree. To take your question one step further there are few , if any, aftermarket add on's that will produce any noticeable performance. Claimed HP improvements based on Dyno results are impossible to verify and even more difficult to duplicate. Noticeable improvements require big $$ investments in either a super charger or bigger bores, pistons, etc... Save your money and buy a Turbo next time or one of the new direct injection 997.2 cars.

[PAULSPEED]

Very minor gains. You will not notice it driving.

Enjoy what you own and buy the things that

make you happy.

Paul

[dsnow]

That is what I thought. Next purchase 480hp 997 turbo that should do the trick.

Thanks

soutahc4s