How much extra power does long tube headers provide?And do i have to lower the engine out of the car to put them on?

 

LT headers with a decent tune after install usually gain 20-30 RWHP.

You do not need to lower your car. You do not need to lift your engine or lower your engine to install them.

They make your car emmision illegal even if you use high flow cats because they force you to relocate the cats which violates a federal law. California is the strictest state by far but outside of the sunshine state it's pretty easy to get away with. If you get emmisions testing in your area just be careful to go on a busy day when they may be to busy to want to do a visual test.

SLP LT headers hang low and do a lot of scraping. The design was poor and many people will warn you against them. Top of the line headers are FLP & KOOKS. But either of those two are pricey. For a more affordable header you can use Hooker. They are a good design and decent price.

The ultimate bang for the buck headers are Pacesetter. They run only $330 I believe and that's coated. With Y-pipe your looking at $500 which is less expensive then most others ask for uncoated headers. But if money is no issue I would probably get KOOKS headers myself.

Good Luck

 

Don't buy the SLP's, they fit like crap and are not worth the bucks. Pacesetters are good for the money, hookers cost just a bit more and are supposed to have a better Y pipe.