All Things Mk5 > Performance Modifications
Is a sport cat legal?
bobby_fodge:
I'm not sure what model it is as it was on the car when I bought it. I don't recall seeing a resonator box when I was working under the car.
The car is standard except a panel air filter and gfb dv+. I'm going to hit the pre cat shortly as that's meant to make the exhaust note a bit deeper.
even when revving up to the redline it still doesn't sound sporty.
rcrisp11:
--- Quote from: bobby_fodge on May 21, 2018, 07:34:21 am ---I'm going to hit the pre cat shortly as that's meant to make the exhaust note a bit deeper.
--- End quote ---
Isn’t that kind of the same as getting a sports cat since you will be removing the pre-cat anyway with this set-up?
bobby_fodge:
Not quite as I'll be leaving the proper cat untouched as I'm not going to go to stage 2. According to the internet gutted the precat is worth doing when I go stage 1 as the EGTs will be lower.
If you get a sports cat you could,
keep your stock downpipe with precat in tact
gut your precat
get a downpipe that doesn't have a precat.
I'm just not after big power, MOT hassle or spending lots on a decent sports cat.
rcrisp11:
Fair enough. Yeah, the Milltek downpipes that I looked at had removed the pre-cat, that’s why I asked. :smiley:
Silly question maybe, but do all stock cars come with a pre-cat fitted? Or was it only for certain model years?
colesey:
Precat is for German emissions testing which has a cold start requirement.
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