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| 3 inch exhaust http://www.gt4dc.co.uk/forum/viewtopic.php?f=1&t=7381 |
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| Author: | timm [ Tue May 19, 2015 7:56 pm ] |
| Post subject: | 3 inch exhaust |
Hi! I'm going to replace standard St205 exhaust system. I bought Blitz Nur Spec catback system and Japspeed downpipe. All of these is 3 inches. I'm just wondering is it a huge stupidity to leave as standard front pipe? I mean 3' downpipe, 2,25' front pipe and 3' catback. What about boost creep? |
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| Author: | Nibbles [ Tue May 19, 2015 9:17 pm ] |
| Post subject: | Re: 3 inch exhaust |
The name cat back suggests it should go all the way from the cat (downpipe) to the rear end. |
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| Author: | timm [ Wed May 20, 2015 5:51 pm ] |
| Post subject: | Re: 3 inch exhaust |
No it isn't catback system, sorry for confusion. I meant that one http://www.blitz-uk.co.uk/ProductItem-109.aspx So what are you thinking about leaving standard 2.25' inch front pipe? |
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| Author: | TrackToyFour [ Wed May 20, 2015 8:50 pm ] |
| Post subject: | Re: 3 inch exhaust |
The Blitz Nur Spec R system is actually 70mm which is 2.75". You will get the most benefit out of the 3" downpipe although ideally you would also have 3" front pipe/flexi section rather than the 2.25" pipe. One of the benefits of running that combination would be slightly more exhaust back pressure than a full 3" system and this would help reduce the chances of boost creep. I used to run a 3" downpipe and frontpipe mated to a Blitz system and it worked well. |
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