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Model specific boards => Golf mk2 => Topic started by: golf gti 16valve on 30 December 2005, 10:01

Title: 4-2-1 branch manifold?? Differences and power??
Post by: golf gti 16valve on 30 December 2005, 10:01

Hi peeps, im thinking of purchasing a perfomance manifold,what is the difference between 4-1 branch and 4-2-1 branch apart from the obvious, does it affect perfomance different?? also with a performance manifold will the car still run sweet?? ive heard ppl having to heat wrap all the manifold etc, would i have to do this,?? also would it make it louder as it replaces the d/pipe with frnt box??any replies much appreciated, many thanks ppl!!!  :grin:
oh its a valver as well sorry,

Title: Re: 4-2-1 branch manifold?? Differences and power??
Post by: Judderi on 30 December 2005, 10:04

I got a 4 branch and it makes a kind of tinny noise. Improves performace enough for you to notice the difference before and after and dont have any running issues. Ive also head of this heat rapping a manifold but i have no idea why.

Title: Re: 4-2-1 branch manifold?? Differences and power??
Post by: Daz... on 30 December 2005, 10:15

Heat wrapping the manifold keeps the temperatures down in the engine bay and basically replaces the heat shield on a normal downpipe as the 4 branch doesnt have one. I believe it also helps keep the gases moving more freely within the manifold.

If you do fit one then it is recommended to uprate at least the front engine mount with a harder one than standard due to stainless manifolds being prone to cracking from the movement of the engine.

Title: Re: 4-2-1 branch manifold?? Differences and power??
Post by: KINGS> on 30 December 2005, 10:39

my 4-1 did smooth things out and make it more free revving more so in higher rev band.. the 4-2-1 will give a greater midrange boost compared tot the 4-1 which is more top end..

Title: Re: 4-2-1 branch manifold?? Differences and power??
Post by: golf gti 16valve on 30 December 2005, 11:50

ok cheers peeps,mmm dont no weather to get one,might jus blob a bit oF WELD on the blowing downpipe, i hate that wet fart sound that comes from it,swear im losing power from it too. Could this be right in losing power??  :grin:

Title: Re: 4-2-1 branch manifold?? Differences and power??
Post by: Daz... on 30 December 2005, 11:57

if your exhaust is blowing then you will be losing a bit of power..and more than likely using more fuel than normal aswell

Title: Re: 4-2-1 branch manifold?? Differences and power??
Post by: sellers on 30 December 2005, 15:05

i changed my standard system to a 4into1 with full system, and noticed a lot of difference in torque, and its sounds so nice when being thrashed, but sounds sh!t like a tractor when just general driving, mines a magnex