Headers

[goldcup]

I have an 01 coupe with the following;
3" cats/catback
3.55 gears
smooth tubes and filters
Would I notice any gains with a set of headers?

 

[KenH]

Modest gains at most.

I had the same setup as you when I added my headers. I was at 432RWHP before the headers and another '01 with the same basic mods plus headers dyno'd only about 5RWHP more than I did.

After I installed the headers, I did not redyno, but it felt like I might have gained perhaps 10-15hp and a little louder exhaust note, especially at WOT.

 

[dave6666]

http://forums.viperclub.org/1620462-post1.html

 

[powerstream]

That is a useful list for new comers like myself.
Question though? what to you specifically when you say ported and honed intake?

Thanks

 

[RobZilla]

The biggest thing you will notice is the sound. With headers and a full 3" cat back set up, you will be LOUD. Now your running Cats, if they are high flow youll still have a good sound. If you remove the Cats, you'll run a lot cooler, but again even louder.

Consult the list in the post above.

 

[Schulmann]

Expensive modification for what you will get.
You should gain about 15-20hp. (100$/hp)
Sound will improve.
A good mod for drag racers.

If you want more HP put your money into a 5psi Roe supercharger ...