Boost spike :(
 

I tried everything and i keep on spiking. Here's a quick info on my setup.

Precision SC-61
8" JRC FMIC
Precision 880cc injectors
Lovefab shorty log manifold (old school one)
Tial 38mm wg
Hks SSQ Bov
2.5 dp
3" Thermal exhaust
profec B spec II boost controller
AEM FPR
STR fuel rail

Uberdata tuned with P28

Re:Boost spike :(
 

How many psi are you running, maybe that wastegate isnt big enought or isnt getting a good signal

Re:Boost spike :(
 

a 38mm wastegate should be plenty big enough for a stock gs-r at whatever he's pushing, what like 10-12psi?

when do the spikes occur?

id guess it has something to do with the configuration of that boost controller, tried bypassing it yet?

Re:Boost spike :(
 

Right now i can't get it to go past 6psi. I have a ".6bar" spring is what I have been told from the seller.

I tired and tried many different ways.

I took off the Boost controller and I ended up with 5-5.5 psi.
I tried 20 million ways to route my vaccum hoses, but still spiked.

Right now, i have it routed in a way that it doesn't go past 6psi.

I'm almost ready to say that I have a defective boost controller, not sure yet.

Re:Boost spike :(
 

well when you disconnected the controller, and you only got 5psi, did it continue to spike?

if not id say thats most definitely the problem.

Re:Boost spike :(
 

It didn't spike when the boost controller was out the picture.

Re:Boost spike :(
 

problem solved.

could be the way its installed or set up, or it could be defective.

either way, for now just buy a heavier spring for the Tial, and call it a day. They say SS Autochrome's are identical so the spring from one of those off of ebay would probably work if you wanna save a few bucks. I think it was evosol who disassembled both units to show they were the same.

Re:Boost spike :(
 

maybe its the EBC....

Re:Boost spike :(
 

It can't by the way i hooked it up. First time i followed the Greddy diagram and it spiked like a mother.

All other ways yield to 5-6 psi or spiking.

Why woudl i need a new spring? If i have a .6bar shouldn't that work just fine?

Also, what do i search on ebay "SS chrome wastegate spring" ?

Re:Boost spike :(
 

heavier spring will cause the wastegate to open at higher psi, its an alternative to having the other spring you have.

i think an 11psi spring usually opens at 10psi, so he probably gave you a 6psi spring, and not whatever else he claims.

ebay, just search by seller, ssautochrome, advanced search owns
all it really found for me was 8.x and 14.7psi springs.