decat ....

[GingerWizard]

Is anyone currently running, or has run, a decat replacement pipe on there EP3 CTR. I'm thinking about it, and wondered if it made much of a noise difference running the standard exhaust system. I would like a increase of noise from the rear end as i live near a rather good tunnel.... but dont want to chavtasicfi' my car.

Any advice on this topic would be great.

Cheers all.

GingerWizard

[CB3]

It will get a touch louder. The sound will change as you throttle it, more of a tin sound. If you going to decat it you rather go for a performance back box & dont use the standard system as you wont get much gains in performance.
oh yeh' its going to need more fuel aswell.

Edited by CB3 on Wednesday 16th September 22:10

Edited by CB3 on Wednesday 16th September 22:13

[Kozy]

How so? Is the Lambda sensor in the cat?

[glama4]

I have racing header with full decat pipe and 2.5" straight exahust...it does make a difference and sounds much better especially in vtec. i think you get around 10-15 extra bhp depeding on system, but car feels a bit more responsive. There are two lambda sensors, a pre-cat and post cat one. The engine light with constantly be on with a decat pipe unless you upgrade ecu and get re-mapped. You can get o2 racing simulator from cpl racing to wire to second o2 sensor and have codes reset to get rid of light but i find light will come on again after high speeds. A few people i have seen with decat pipe leave second o2 sensor out completely and put a bung in the sensor hole.