lets get creepy

[97GuSTo]

I dont want another boost creep thread about porting this or flapping that....but right now im creeping from 10 to 20psi and was wondering if I set the psi higher if it would still creep so much or if it would creep up fewer psi...kinda like Newton's law of cooling...or uh...dsm's law of creeping.

Its probably wishful thinking...im just tired of taking out my 16g all the time.

 

[herostar]

try it.

with your mods you shouldn't have any trouble running 20psi anyways, set it to 14-15 psi and see what happens.

 

[97GuSTo]

Just to follow up, my mbc is set around 17 and it stays on 17-18 very well....is that normal to have a lot of creep if you have your boost set low but when you turn it up, it stops?

Anyways, im not complaining

 

[16g-95gsx]

Yes. Think of creep this way, your wastegate as I'm sure you know is like a bypass for exhaust gases. To keep a turbo spooled at a certain RPM more exhaust gases need to be bled off, therefore the lower you go the bigger the wastegate is needed. By say setting it to 13psi, you are letting your wastegate very quickly get overrun allowing it to easily creep without any problem. By setting it to around 17psi, you are giving it enough room to get by without creep or with very little creep. The higher you set it the less creep you'll see. Also it is dependant on the gear you are in. If you are doing a 4th gear pull you will creep much easier than a 2nd gear pull. I used to have the absolute worst creep in the world, until I finally got a 34mm wastegate flapper. Even the O2 dump didnt help at all, so I just ditched that thing and went for the more street legal and ear drum friendly internal gate.