Increase in boost between cat-backs????
i currently have intake, 2.5 downpipe, mid pipe, and RP catback on my T2. it also has a ported wastegate on the rebuilt turbo by the previous owner and i experience NO FUEL CUT what so ever. smooth as silk thru the rpm range so i guess he REALLY ported it. anyway, i have the Apexi N1 single catback on my 91 n/a. i wanna swap it on the T2. i ordered an FCD yesterday and am gonna put that in as soon as i get it. my question is: the RP piping is pretty small 50mm is only 2 inches...the N1 starts from 2.5 and goes to 3.4...how much of an increase in boost do you think i'd see? i don't have an aftermarket gauge, but the stock one goes about 3/4 of the way up when i'm on it. so i guess that is about 7psi. would i run too lean with the N1?
i know some people on the forum have intake, dowpipe, cats and catback and just an FCD and hit 10-11 psi. if mine is at 7 with the ported wastegate, would the N1 cause it to jump 4psi? thanks for any info... |
I don't have a TII but it should help, I couldn't really see 4psi but maybe. Alot of people have 3" DP & MP which would also help. You wouldn't run too lean with a FCD, which you should get before you do change the exhaust. Oh ya, do you have an intake, or no? That could have something to do with it.
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Originally posted by Ryde _Or_Die I don't have a TII but it should help, I couldn't really see 4psi but maybe. Alot of people have 3" DP & MP which would also help. You wouldn't run too lean with a FCD, which you should get before you do change the exhaust. Oh ya, do you have an intake, or no? That could have something to do with it. |
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List the exact questions you want answered because there are a few kinda spread out in that paragraph.
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I doubt it will make much difference. maybe 1psi. I would highy recommand getting a boost gauge!
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Originally posted by Scott 89t2 I doubt it will make much difference. maybe 1psi. I would highy recommand getting a boost gauge! |
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