What kind of power gaines can I expect from a good header if added to a stage 4 set up with a vf34. Any one have ball park figures or experiance with a particular brand of header? Should the ECU be re-tuned for the new header?
Thanks

...O.K. here are (Some of) my engine mods :
TurboXS; TMIC, UTEK, Hi-Flow Cat., up-pipe, Down Pipe.
STi: 565cc Injectors,
ProDrive: Cat Back muffler, springs.
Power Enterprises; Intake System,
Walboro; fuel pump 255lph.
Samco;, induction pipe.
IHI; VF34 Turbo.

The Dyno-Pack says I'm currently putting down 298.6 hp and 279 lbs/ft.

 

Whats a stage 4? List your mods. Those stage #'s are silly.

 

Depending on what setup you choose (which header) you will lose some or a lot of low end horse power but gain it in the end.

Rush

 

Maybe I should rephrase thew question. Is the gain in horse power worth the cost of a header, most runing from $600 to $1000?

 

what kind of racing? you are going to lose power in the lower rmp's and gain some higher up. by the way lose the cat if you are after a few more hp

 

I do have a grasp of how a header functions and am well aware they sacrifice low rpm power to gain more up top, thanks for beating that to a pulp guys it offers me no help what so ever.

 

touchy touchy

I think it's a personal decision you have to make: A certain amount of horsepower for 600 rpms later boost

 

I dont mean to be touchy but look at the previous posts, they all say the same thing and dont even come close to answering my questions. Oh. well just forget it.