exhaust decat

[jamie281093]

i have a sportex backbox on my phase 1 vtr, the rest of the exhaust is as standard. i have been thinking about doing a decat. everyone seems to tell me it will be stupidly loud then though, but i cant see how as the sportex back box isnt much louder than standard, so how loud would it roughly be with decat, anyone tried it? any performance gains? and would i loose too much back pressure? also how much mpg would i loose? sorry about all the questions, i dont want to buy a decat pipe, fit it, then regret it after all the effort lol

[Beech36]

good question been wondering that my self with my phase 2 i got str8 threw pipe and a back box and it not even that loud now just makes me think how much louder it will be if i upgrade the manifold

[jamie281093]

yeah everyone keeps telling me it will be silly loud, but surley the cat cant silence it that much? if it does then it must create a lot of back pressure, so removing it maybe it would loose too much back pressure then just be completely crap

[Beech36]

a few of my mates got decat saxo's and they sound mint it depends what u meen by stuidly loud. yeah when the put there foot down there heard from abit of a distance bu suppose it varies on your set up also

[jamie281093]

well, i dont wanna get pulled over 24/7 for bein too loud, and bearing in mind i have a 1.1 box on my vtr, so cruising at 60 would be like torture if it was loud

[Karlb1]

Decat won't make it overly loud in my opinion. It will make it more raspy, but it won't make a massive difference unless you remove the standard silencers too..then it will be loud.

Performance wise you probably won't notice anything at all.
MPG wise you'll use a little more...mainly due to the fact your foot will be down a lo more to make more noise to hear it, but not a noticeable amount

TBH, i'd be more interested at looking into straight pipes with a silencer if i was you..like the supersprint/kamracing one.

[jamie281093]

Decat won't make it overly loud in my opinion. It will make it more raspy, but it won't make a massive difference unless you remove the standard silencers too..then it will be loud.

Performance wise you probably won't notice anything at all.
MPG wise you'll use a little more...mainly due to the fact your foot will be down a lo more to make more noise to hear it, but not a noticeable amount

TBH, i'd be more interested at looking into straight pipes with a silencer if i was you..like the supersprint/kamracing one.

problem is im tight with money lol, it never had a centre silencer, just cat then backbox, sportex one makes not much difference than standard, so a decat would make it more noticable without being too loud? also would i get a few pops & bangs :P

[Prickle]

i have a sportex backbox on my phase 1 vtr, the rest of the exhaust is as standard. i have been thinking about doing a decat. everyone seems to tell me it will be stupidly loud then though, but i cant see how as the sportex back box isnt much louder than standard, so how loud would it roughly be with decat, anyone tried it? any performance gains? and would i loose too much back pressure? also how much mpg would i loose? sorry about all the questions, i dont want to buy a decat pipe, fit it, then regret it after all the effort lol

Sportex backbox is much louder then a standard back box, infact noisy

[josh11490]

Decat doesn't make it to much louder I don't think, sounds nicer, bit of a gain because its more flowing.

http://youtu.be/_wTcQaCfP3s

That's my vtr with custom cat back and supersprint mani, no silencers. Sounds mint in my opinion.

Mpg won't be much worse tbh, it sounds nicer so you might have your foot down more but drive normally and there's very little different IMO.

[jamie281093]

Sportex backbox is much louder then a standard back box, infact noisy

mine isnt lol, 3" outward rolled one, not that the tip will make any difference i wouldnt have thought lol

[jamie281093]

Decat doesn't make it to much louder I don't think, sounds nicer, bit of a gain because its more flowing.

http://youtu.be/_wTcQaCfP3s

That's my vtr with custom cat back and supersprint mani, no silencers. Sounds mint in my opinion.

Mpg won't be much worse tbh, it sounds nicer so you might have your foot down more but drive normally and there's very little different IMO.

Think im gunna give it a go once crimbo is out the way :) will try not to destroy the original pipe incase i dont like it :P