HP loss with Headers

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Aug 22, 2001 | 09:43 AM

2K3GT/2K Wagon

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HP loss with Headers

I was talking to the GURU's (sarcasim) at HDK the other day and the guy told me that some customers were not happy with the 4-2-1 header because of a loss of high end power. I know the 4-2-1 is supposed to aid low and mid power but what about the top end? Anyone who has these please respond, I've never heard that before.

Aug 22, 2001 | 05:08 PM

Random

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From: Rancho Palos Verdes, CA

Vehicle: 2008 Toyota Prius 2006 Suzuki SV650S

Poorly designed headers can have a whole range of problems...no low end, no midrange or no top end.

When Batlord put the Shark Racing 4-2-1 headers on his car, He got something like 6 HP. I'm haven't dug up the Dyno tests and exact details, but I think you'd be happy with an extra 6 ponies to the wheels. If I remember right, he got another 6 (12 totoal) with the KORE cat back system. Just don't quote me on this untill I dig up the dynos and such.

Aug 22, 2001 | 05:59 PM

Xorro

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Vehicle: Mitsubishi Lancer Ralliart GSR

After I had my header and exhaust put on I noticed little difference until 3000 revs, then the car goes mental!! smile.gif

Aug 23, 2001 | 12:20 AM

gappi

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hei Zorro have you got the 4-2-1 or the 4-1? rolleyes.gif

Aug 23, 2001 | 03:09 AM

Turboman1

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i used to have 4-2-1 headers with the rest 60mm piping the result was 7.5at the wheels.It was pretty good i suppose and a lot better than 4-1 headers.
YOU SHOULD KNOW that beta motor doesnt handle at all the 4-1 headers,this is a fact.We have tested them in many tibbies and the results were not good.Your car will sure accelerate much faster with 4-2-1 and the diff at high revs is minor