I got my tune with a test pipe and as expected I got boost creep, it creeped to about 3-4psi (13-14psi). So since I didnt want the boost creep I reinstalled my cat. By doing that I thought it would eliminate the boost creep but still didnt. It did help, but not too much. With the test pipe the highest I saw it peak was close to 14psi. With the cat installed the highest I saw it peak was about 13psi (.90 hkpa)


MY01
Greddy kit
Greddy type-S BOV
Tuned 10psi w/ 307rwhp
T1R 70mm v3 single exhaust
Blitz dual SBC spec s boost controller

Is this normal or what could it be? I plan on porting the wg out in the next week or so to "fix" the boost creep. Just want to know if it would be of something else? Do I need to have it tuned with the cat so it doesnt have boost creep?

PS: Have CEL P0411 but I know what that is and I dont see how that would effect the boost creep. Going to fix that as soon as I get a day off.

thanks for reading

 

BERK HFC, it is the perfect balance, Ihad BAAAAD creep with TP, OEM CAT choked me up top

 

Porting the wastegate should fix the problem.. Its wierd how some people have noticed bad creep but I have not experienced it at all (ported WG tho) with 3" single downpipe back... Is everything with the boost controller set up properly???

 

that looks more like a boost controller problem. do you have a dyno plot with the boost controller turned completely off? (spring pressure)

either way boost is hitting hard, dropping, and then creeping. something is wrong right from the get go.

 

I had the same issue. I took it to Greddy and they adjusted the actuator arm on the wastegate. After that I was at 8psi with the stock cat in. Before they adjusted it I was hitting 12-13 psi.

 

check the actuator for the proper adjustment and make sure it opens when it should. when the turbo is off the car, put pressure to it w/ a gauge so you can see at what psi it is opening.

also check the flapper arm to make sure it isn't getting caught up or seizing.

 

alright will do. but i wont be able to do this until a few weeks. you think it would be ok to drive it still but just not in boost? its my dd

thanks again for the advance.

 

^^^^I agree, but have you tried running on stock boost off the WG... That will show if it is your boost controller or not... And i Know the code you have and all it usually is the vacuum lines are mis matched at the manifold or around the air pump..... Don't think that could throw off a vacuum source tho could it

 

this is my 1st tune

no bov, ebc, single exhaust just stock everything



if its no suppose to hit a peak of 10 psi then its probably the actuator.
suggestions??

thanks again

 

single exhaust doesn't help boost creep either...