power increase

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Jun 3, 2003 | 04:28 PM

marshp

Thread Starter

Registered Rx7 Owner

Joined: Apr 2002

Posts: 230

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From: Vancouver

power increase

what kind of an increase in power can i expect if i take off my cats and put on a header?
this is without changing the muffler
and if i were to change the muffler too what more woudl i expect

Jun 3, 2003 | 05:25 PM

jutny

SA all the Way!

Joined: Oct 2002

Posts: 904

Likes: 1

From: Montclair, NJ

racing beat says 22% over stock with their whole exhaust system

so thats from 100hp to 122hp at the crank.

Jun 3, 2003 | 09:12 PM

Sudox_E

Senior Member

Joined: Oct 2002

Posts: 432

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From: Chesapeake, Va

Hmm, using all the stock piping, and just replacing the cats with a test pipe and putting on a header, and based on racing beats estimated increase, my guess would be a 5-10% increase.