Boost Creep on this exhaust?

[joeym4130]

Well I finally get to do my exhaust verry soon.... so i needed to make sure of one thing..
I dont plan on upgrading my turbo bigger then a B16G, but...never know i guess haha. Right now its my ported 14b. I dont know what size exhaust to spring for. I was told 3" by a friend, but he said he's not sure about boost creep. So i was thinking, instead of buying 2 exhausts, one now, and one when i get a larger turbo, could i get a 3" catback, and use a 2.5" downpipe temporarily, and would that be enough to hold off boost creep? That way i can sell my DP and get a full 3" DP and not have to spend a lot of $ once i get a big turbo, cause i will be driving the 14b around for awhile yet. I dont mind about the ineffeciency of having a 2.5" to cat to 3" exhaust, but just want to know if anyone thinks it will not creep badly. I have a ported O2 housing i will put on too, supposedly will help i believe. Thanks guys

 

[WI_99'GST]

ya a ported 02 housing will reduce creep. i dont know about buying 2 exhausts tho, it seems like overkill, if you plan on upgrading turbos anyway, then just monitor boost and try to ileviate(sp?) the creep...

just my 2 cents

and you have MBC so if it creeps too high...then turn it down

 

[joeym4130]

ok. thanks!
Well not two whole exhausts, just would end up buying 2 DP's
So i could sell the 2.5, and get a 3 once i get a turbo.
Only reason I'm wondering is that I dont want to get a full 3" now and have it creep, because i wont be getting a new turbo for a while.
I was hoping that a 2.5" DP, and leaving the cat on wouldnt create a boost creep problem w/ a 3" catback.

 

[kpt4321]

1. Porting the O2 housing will not get rid of creep. The restriction is at the wastegate.

2. If you have bost creep, you can't turn it down with an MBC.


Read this:

http://www.dsmtuners.com/forums/showthread.php?s=&threadid=109324

 

[joeym4130]

cool thanks a lot!
i know all about it now, and how to fix
But do you think i WILL creep noticeably w/ what im gonna get? Or is it just dependent on the car and I'm going to have to find out for myself (probably will huh :laugh: ) Only reason wondering because, as per now, i would rather not have to deal with working out another problem and spend more $$, or try to port things myself when all i have is a dremel.

 

[WI_99'GST]

damn thats a sweet post! thanks for the link.