MoNkEy MaGiC
Member
Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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thinking of having a decat fitted to my gsi, ive got a full scorpion cat back exhaust at the moment...
i know i will probably loose some low down torque but gain a bit higher up the rev range...
my bro got a decat put in on his punto gt, he got a noticable power increase and the sound was also noticably louder/rumbly!
so i was wondering how exactly will the sound and power be affected on my car with a de-cat??
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Arctic_Monkey
Member
Registered: 20th Mar 06
Location: East Dunbartonshire - Glasgow
User status: Offline
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I've got a decat on my 1.4 sport mate, i've not really noticed a huge difference but it sounds better, bit raspier....worth doing if u can get it mot'd alright etc
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Dean_W
Member
Registered: 13th Dec 05
Location: Downham Market, Norfolk
User status: Offline
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quote:
Originally posted by Arctic_Monkey
worth doing if u can get it mot'd alright etc
Just swap it back on for an MOT.
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Scotty C
Member
Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
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Didnt really notice a difference on mine. Just a bit louder.
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Fro
Member
Registered: 20th Jun 06
Location: Rainham, Essex Drives: A3 2.0TDi Sport
User status: Offline
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Mine is just stupidly loud and not really noticed any difference.
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topshot_2k
Banned
Registered: 1st Dec 03
Location: Northampton Drives: Pug GTi-6
User status: Offline
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my 306 GTi sets of car alarms with decat. revs so much better after 4krpm though
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craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
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mine revs a lot easier now but i have a 4 branch manifold and a straight through system its very loud though.
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davey_jack
Member
Registered: 28th Jan 06
Location: Horley, Surrey Drives: Clio 182
User status: Offline
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mine is a sportex one with a silencer, revs out alot better I think, definitely better performance but not alot though.
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Jenko_Sport
Member
Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
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When i had my new exhaust and de-cat on my old 1.4 it seemed to pull abit harder mid way through the rev range but nothing amazingly different.
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topshot_2k
Banned
Registered: 1st Dec 03
Location: Northampton Drives: Pug GTi-6
User status: Offline
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revs also drop alot quicker when you change gear
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MoNkEy MaGiC
Member
Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
User status: Offline
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hmmm interesting replies
i want to get rid of it is because my car is very low, and the cat is the only part which scrapes over bumps! but do not want the sound to turn Raspy/ high pitch whining!
what sort of gains on my engine would i notice c16xe gsi, which is in more or less standard form??
so far, correct me if im wrong, better mid to high end rev, maybe bit less low down torque, sound louder/rumbly and rev drop quicker on gear changes, is this good or bad??
[Edited on 01-01-2007 by MoNkEy MaGiC]
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Scotty C
Member
Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
User status: Offline
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quote:
Originally posted by MoNkEy MaGiC
hmmm interesting replies
i want to get rid of it is because my car is very low, and the cat is the only part which scrapes over bumps! but do not want the sound to turn Raspy/ high pitch whining!
what sort of gains on my engine would i notice c16xe gsi, which is in more or less standard form??
so far, correct me if im wrong, better mid to high end rev, maybe bit less low down torque, sound louder/rumbly and rev drop quicker on gear changes, is this good or bad??
[Edited on 01-01-2007 by MoNkEy MaGiC]
You wont notice any difference on a standard engine. If you do it's psychological. Just a bit louder, that is all.
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