how much power can you expect from intake and exhaust when racing?

 

The same as you can on the street. I would say together, depending ont he system, anywhere from 5 to 10 total.

 

Not that much, yeah about 5-10 hp.

IMO, unless you really race your car, or LOVE the sound of the modified exhaust, it's just not worth the $$ on a daily driver.

I did do it on my car, but the intake was only $100, exhaust $250 total, and I LOVE the sound of the exhaust.

I really don't understand the people who spend $300 on an intake and $800 on exhaust for 10hp. Unless they got money to burn, it just does't make sense to me if that's all the mods they're doing.

 

One thing to keep in mind is that these gains are on a stock engine. If you plan on adding any type of supercharger, like I plan on, the additional exhaust flow will compliment the SC.

 

The stock intake is awesome as is...its already getting cold air....the intake opening is at the very front of the engine bay sucking plenty of cold air so thats not an issue. Maybe the volume of air is an issue in which case, just drop in a K&N. Aftermarket intakes just dont provide a signicficant enough advantage over stock. Some folks just HAVE to modify a car though so go for an intake if the noise and 5HP make you feel better. To each his own.