Post #1
Hi, i am putting the Gti6 into my 206 next week an just wondering what size system i should use. The one on the car is 3" decat and is down to 2" into the back box. Was going to make the pipe from decat to back box an buy a new/secondhand back box. Can any one help
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displaying posts 1 to 5 of 5
| Author | Subject: Exhaust size |
 smithy pug rally
Newbie  Location: whitland Registered: 07 Jul 2010 Posts: 18 Status: Offline |
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 Posted 21st Feb 2011 at 01:31
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anth
Seasoned Pro  Location: Colchester Registered: 04 Apr 2006 Posts: 3,651 Status: Offline |
Post #2
3" !! 2.5" is pushing it on a standard n/a engine. |
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Posted 21st Feb 2011 at 01:54
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Rich E
Forum Admin Location: Hertfordshire Registered: 27 Apr 2005 Posts: 7,757 Status: Offline |
Post #3
anth wrote: 3" !! 2.5" is pushing it on a standard n/a engine. Eh??  The standard GTi-6 exhaust pipework is 2.25 inches. I wouldn't go bigger than 2.5" on a standard engine as it'll lower the back pressure and you'll lose low end torque. ________________________________________ Rich |
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Posted 21st Feb 2011 at 02:29
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anth
Seasoned Pro Location: Colchester Registered: 04 Apr 2006 Posts: 3,651 Status: Offline |
Post #4
Rich E wrote: anth wrote: 3" !! 2.5" is pushing it on a standard n/a engine. Eh?? The standard GTi-6 exhaust pipework is 2.25 inches. I wouldn't go bigger than 2.5" on a standard engine as it'll lower the back pressure and you'll lose low end torque. Thats what i mean. 3" is far too big, OP mentioned a 3" decat. My first post may have been a bit miss leading reading it back though. |
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Posted 21st Feb 2011 at 23:26
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smithy pug rally
Newbie Location: whitland Registered: 07 Jul 2010 Posts: 18 Status: Offline |
Post #5
The decat is 3" which is the same size as the cat, then reduces straight down to 2", may be i should of explained better. Was going to run 2.5" from the decat all the way back. Standard engine on omex management, Stage rally car |
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Posted 22nd Feb 2011 at 01:24
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