Easy bud, I said they CAN make 10HP, which they have on the engine dyno over in Germany... However, please realize that was not the main point of my post, WE SAID THE SAME THING!! I said only on MODIFIED cars (K24's and above) are they worth it, and that the main purpose is to reduce lag .
Evan
PS-KSA: If you got 80BHP with Headers, Cats, Exhaust I will bow down and kiss Joe's feet!!! His stuff makes good power, but 80BHP from exhaust??

 

Stephen's above post is spot on. My experience is headers are a worth while add @ approx. 600 rwhp and above. Some important issues when buying is to find thicker wall header. We have found 16 gauge material to work best. The thicker materal, the more heat you keep in the header. Heat is torque and power. In addition, try to find headers made of 321 stainless. 304 stainless does not hold up as well.

Ceramic coat and wrap your headers. If you use 312 material, corrosion won't be much of an issue and the retained heat will be noticable in power, torque and response (lag).

Finally, make sure the header design for the turbo has as short a lengh as possible. There are other issues such as tube diameter, however this issue depends on what range you want your torque and what maximum rpm you want to attain.

 

Evan...HUH? Where did that retort come from. We are saying the same thing! I agree that was my point I was backing up what you said. I wasn't stepping on your toes. Trying to support that info

 

CJV/Evan,

Who makes a short length header out of 312 stainless? I looked at the FVD site and it did not state material of headers (The site is not that user friendly. Must have been designed by a German like me)

Just trying to get my torque up and I'm not interested in going with a high boost set-up over concern with reliability.

I have k24 turbo's, GT2 intercoolers, chipped (1 bar max .9 sustained) and I only have a peak HP of 377 and a peak torque of 366. I was disappointed to say the least when I got the news.

Tried an aftermarket exhaust and hated it!!! Where do I need to go next to get the power this motor is capable of making?

Thanks again guys

 

"Tried an aftermarket exhaust and hated it!!! Where do I need to go next to get the power this motor is capable of making?"


headers w/a stock exhaust is pretty much a waste of time if you ask me. There must be a synergystic package betwen the two. Try a different exhaust setup with race cats and free flow muffler boxes.

There are plenty of free flow exhaust options to try...

EP, CarGraph, Fabspeed, Techart, AWE ect....

 

Rockitman,

Your point is well taken but. I got burned by one of the parties you listed for exhausts (They will remain nameless so don't ask) so I'm very leery of wasting another $3500 for an exhaust that has so much resonance that the car is undriveable.

I guess I need to start another post to see who near Washington DC has an EP exhaust that I can here in person. Or some of the other manufacturers listed. Until I ride in a car that has the exhaust on it I will not by it. I only say EP because it seams no one complains about it making resonance.

 

I think maybe I took your post the wrong way . Your first statement of "Headers alone add less than 10HP as Evan states" is where my response came from. I took that as you are saying my claim that a header can add 10BHP on a modified car was not BS?? I don't know looking at it I still don't know how to take it .
I was just kinda suprised and confused since I thought we were making the same point
Evan

 

It's ok guys:

 

No worries either way. You took it the wrong way. You know me better than that.

 

Ken,

Were the hp and torque curves similar??? Would you then suggest not doing the headers from your experience??

Lou

 

Get the Cargraphic Super Sound, loud and mean outside, really no resonance to speak of inside. You can hold a conversation at any RPM..........No problem. Best exhaust imo. Do a search and you will find a bunch of videos I posted of the exhaust.

Lou

 

Yea, thats what cought me by surprise
Nuttn but love man
Evan

 

My personal experience with IA ceramic coated header with my IA Stage 4 was really satisfactory!!

The engine runs A LOT cooler, even the dealer noted that asking me what I have done. (ceramic coated)

Here at 5,600 feet you feel the turbo lag much more and with IA ceramic coated header my 996TT was muuuch more easily to take of the line. Those 200-300 rpms help a lot, and in conjunction with GIAC 4 on low rpm’s the car feels that breath better with the headers.