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Model specific boards => Golf mk4 => Topic started by: Miggie on 12 March 2009, 20:04

Title: How much power?
Post by: Miggie on 12 March 2009, 20:04

If your 1.8t has been remapped....how much power would you get from a de cat and or downpipe?

What is the downpipe mod anyways?

And any other mods available....besides all the usual smoothed box, r32 intake etc?

Title: Re: How much power?
Post by: richw911 on 12 March 2009, 20:10

Quote from: Miggie on 12 March 2009, 20:04

If your 1.8t has been remapped....how much power would you get from a de cat and or downpipe?

What is the downpipe mod anyways?

And any other mods available....besides all the usual smoothed box, r32 intake etc?

I got 14.6 BHP from FULL milltek and the DSG intake both fitted at the same time.

De cat and down pipe - removes cat not legal and can cause running probs - the lambda sensor can be coded out tho.

Sports cat + down pipe = high flow cat makes the full milltek - from the turboback and fully legal.  :smiley:

Title: Re: How much power?
Post by: Miggie on 12 March 2009, 20:53

OK but what happens to the downpipe? Is it changed to a bigger one or what?

Also how much will it cost for a decat and downpipe?

Anyone?

Title: Re: How much power?
Post by: (shakey) on 12 March 2009, 20:55

if you have two lamba senors then you will need the sensor coded out,i think the 2 lambas came in on 2001 model mine has 1 lamba which is a 1999 so no need to coded it out.

i fitted a decat and downpipe a wk ago now and what a difference it has made cnt wait to get it on the rolls on the 28th :cool:

Title: Re: How much power?
Post by: (shakey) on 12 March 2009, 20:57

i have a 3 inch downpipe .

i payed 90 for mine off ryan32 on here.

Title: Re: How much power?
Post by: Miggie on 12 March 2009, 20:57

I too have a '99 Agu.....how much did it cost you and what is the downpipe mod?

Title: Re: How much power?
Post by: (shakey) on 12 March 2009, 20:59

the downpipe comes off the manifold that joins onto the cat.

thats is where you take the cat out and put the decat in.

Title: Re: How much power?
Post by: Miggie on 12 March 2009, 21:01

oh i see...how much did this cost you?

Title: Re: How much power?
Post by: (shakey) on 12 March 2009, 21:03

nothin i did it myself m8.

just cost me 90 quid for the bits. :cool:

Title: Re: How much power?
Post by: l3w1s on 12 March 2009, 21:09

fitted a decat downpipe bout 2 weeks ago and i have the 2 lamda sensors does bring up an emissions light but runs perfect and quicker, been told you get bout 15bhp from the decat an a bit more if your doing the rest of the exhaust with it.  worth it plus most people no someone who can get them through an MOT with the decat.

Title: Re: How much power?
Post by: Miggie on 12 March 2009, 21:13

How much did it cost you?

Title: Re: How much power?
Post by: l3w1s on 12 March 2009, 21:17

i bought it on ebay for bout 100 quid if you look its on there stil prob, but its 2.5 inch so its bigger than the rest of the standard exhaust which is 2.25 inches so you need a reducing piece of pipe to link the two together or buy the whole exhaust system.