Two Twins

15th April 2004, 03:33

Im thinking of getting a two twin cat back system for my Mk1 VTR, i know that fitting a whole system will increase power slightly, but i have heard that fitting two twins will decrease power, is this true?

15th April 2004, 03:36

how the hell you gonna fit 2 cat back systems? there's only one cat? im guessing you mean a twin outlet either side. if so, then ok,but it runs from one,then into two pipes and then to the back boxes.

wont really decrease power.maybe a slight increase

15th April 2004, 03:45

Yea one cat and twin either side

15th April 2004, 04:14

piper, miltek, powerflow.

15th April 2004, 14:40

ave got one twin at the min and am gettin another for the summer, will increase ur bhp a little as has bin said and as wiv an air filter wiv every engine modd it will make the difference more obvious!!

Deano

15th April 2004, 17:20

Shouldn't think it wud decrease power, cos u have 2.

15th April 2004, 22:55

sweet, jus some random bull i heard then. hoping to get a powerflow system as there is a garage that does them just near me, ive got a pipercross induction already on the car too.

15th April 2004, 23:04

it could decrease power, if the bore of the exhaust was to large it could decrease power.

Just to confuse you some more

16th April 2004, 14:04

wot about mine, i am gonna have 43.5inch wud that be okay??

Deano

16th April 2004, 16:24

depends on the bore before the back box as well, the actual size of the tail pipe usually bears no relation to the bore before it, i.e. a 5 inch tail pipe does not mean a 5 inch bore as that would be completely ridiculous and redundant on most cars

16th April 2004, 16:36

oh rite dont know then but its from ascar so they know wot they r doin!

Deano

18th April 2004, 06:38

Go with powerflow, thats what I've got, four 4" pipes, didn't decrease the power at all, plus it sounds real deep for a 1.4

18th April 2004, 06:50

and looks mint!!

18th April 2004, 13:45

How much did it cost !!

18th April 2004, 20:54

Certifiable your car is sweet man, i think i wil go with powerflow

19th April 2004, 05:11

Cheers, there r more pics of the car in the pics section. It was £440 for the full s/s system. The advantage of powerflow is that you get to pick exactly how you want it to sound i.e. how loud n how deep, plus it comes with a lifetime warranty