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Model specific boards => Golf mk4 => Golf mk4 TDI => Topic started by: Dubbz on 09 February 2011, 13:45

Title: Exhaust size for 100bhp 63mm??
Post by: Dubbz on 09 February 2011, 13:45

As the centre exhaust mount is shot on my motor, i was thinking of loosing the cat changing the down pipe. I'm unsure what size i should be looking at  :undecided:
I came across this site http://www.motorsportworld.co.uk/ withh a downpipe and de-cat but says for 130/150
Would anyone know what size mine is, any advice?

Thanks. :afro:

Title: Re: Exhaust size for 100bhp 63mm??
Post by: alex160 on 10 February 2011, 19:01

Mines the 115tdi and the miltek downpipe/decat fiited straight on my motor if thats any help  :sad:

Title: Re: Exhaust size for 100bhp 63mm??
Post by: Dubbz on 10 February 2011, 19:14

Quote from: alex160 on 10 February 2011, 19:01

Mines the 115tdi and the miltek downpipe/decat fiited straight on my motor if thats any help  :sad:

Cheer's Alex, I suspect all TDI's are the same bore size then  :undecided:
Have you only changed your downpipe and de-cat?

Title: Re: Exhaust size for 100bhp 63mm??
Post by: alex160 on 10 February 2011, 23:08

I had it fitted to start with to my stock system but about 2 months after i had a miltek system installed by a company in cardiff, made a noticable difference to performance, and sounds lovely when giving it some  :drool:

Title: Re: Exhaust size for 100bhp 63mm??
Post by: Dubbz on 15 February 2011, 13:42

Ok so my exhaust is now getting on my tit's with it's nice rattle against the underside of the car.  :rolleyes:
When I put a larger downpipe on and de-cat etc will i still need to get another centre exhaust mount/rubber?? or will replacing the exhaust system do away with this rubber mount??
Just need to wait for THS to get the downpipe back in stock.

Thanks. :afro:

Title: Re: Exhaust size for 100bhp 63mm??
Post by: xxpenxx on 15 February 2011, 13:57

Alex, I'm brassick atm personally, but how much are the Miltek exausts? Is it a full one you bought? How comes people are De-Catting them, thought the Cat is meant too keep the car running smoother?  :grin:

Title: Re: Exhaust size for 100bhp 63mm??
Post by: alex160 on 15 February 2011, 22:10

I paid £80 for my miltek downpipe/decat off ebay, the rest of thesystem was £280 fitted. The cat is simply there to aid emmissions but isnt a legal requirement on a diesel car, it is the most restrictive part of the exhaust and makes a good noticable gain when removed, helps the turbo spool up that little bit quicker too.  :evil:

Title: Re: Exhaust size for 100bhp 63mm??
Post by: Dubbz on 18 February 2011, 10:43

Well according to VW you can not buy just the centre exhaust bracket.  :rolleyes: