Headers (cat delete) vs cat delete dyno sheet

[OxfordCoyote]

Does anyone by chance have a dyno graph showing power gains along the curve? Trying to prove that headers dont just add 10hp over cat delete...

 

[AZBOSS]

I will in about a month or so.

 

[sleeper02]

I know there is a comparison graph on this forum somewhere. I believe the consenseous was the lt headers with an o/r mid provided only 5 to 10 whp difference at peak over a basic o/r mid pipe, but throughout the rpm range, the header combo made as high as 20-30whp gains over the o/r mid pipe mostly in the mid range.

 

[Grabber]

I can check to see if I still have my first dyno sheet for my car.

First dyno was with Cat-Deletes, Ported CJ, TB, Intake, Tune and Borla S-Types - 422 RWHP / 367 RWTQ.
Second dyno was with Kooks 1-3/4 "LT's, Kooks O/R H, Ported CJ, TB, Intake, Tune, Borla S-Types - 443 RWHP / 388 RWTQ.

I had upper RPM knock and added a few gallons of 100 Octane. I'd imagine with full E85 or 110 Octane, my car will be over 450 RWHP and 400 TQ which is a good 25+ RWHP gain with Headers.

 

[clc44]

I'll be going straight to long tubes and no cats. I'll take any gains because he sound is worth it!!

 

[slow306stang]

Here is my results from a few years back. The car didnt pick up much with the headers. After that i added a boss manifold, 85mm throttle body, and a steeda air intake which picked up almost 4mph. I dont think the headers did much with the stock manifold but with the intake side opened up it ran well.

http://www.svtperformance.com/forum...ts-3-quot-o-r-x-vs-lt-s-driveshaft&highlight=

 

[OxfordCoyote]

Thats what i am a little worried about. Dont want to drop the thousand dollars for headers and gain 10whp. rather just spray the car.