tomz28

iTrader: (20)

hey guys i have 8lbs springs in my wastegates on my APS TT set up and my boost is hitting 9.5 to 11.5 psi not good for my shortbolck at all has anyone else had this happen to them
every thing is put together right so whats up ?

10secsts

iTrader: (5)

Mine has been running about 9-10 pounds. Did you actually confirm what springs were in your wastegates? Somebody mentioned awhile back that backpressure could be the cause of the overboost problem.

tomz28

iTrader: (20)

hahah yes they have springs in them and the box that they came in said thats what they come with

10secsts

iTrader: (5)

What I should have said is,..... What color springs are in your wastegates?

tomz28

iTrader: (20)

ill have to pull them and check them out

calongo_SS

iTrader: (7)

Interesting, I am running 10 lb springs in mine and the car consistently makes 11.5 psi. Not nearly as big of a difference as you are seeing though.

tomz28

iTrader: (20)

they are green

10secsts

iTrader: (5)

Big green or little green? Big is supposed to be 13.05 psi and little green is 7.25. If it's big green [I'm guessing that's what it is] The only reason you are not seeing 13 is because APS references the wastegate right at the compressor discharge.

tomz28

iTrader: (20)

the spring feels like it has some force behind it its not thin at all so were can i get some small ones at ? thanks for the info and on the box for the wastegates it said it had .5 bar springs in

MY99TAWS6

iTrader: (3)

.5 bar is about 7.5 psi. So they should have the right springs.You go to tial website it shows the different springs. I guess its possible the springs are wrong. Also couple other possiblities might be vacuum leak in the lines somewhere to the gates or connected to the gates. Some guys use zipties to hold the lines onto things securely or very small clamps.
Any chance its your gauge?

ABeasst

iTrader: (5)

I'd take it off and check it with a regulated air source to see if it opens at 7.5 off the car and if it doesnt then its the wrong spring.

tomz28

iTrader: (20)

we hooked the dyno boost gauge to the intake and it said 12.46psi and right after that i check all line and it was good so it looks like springs

Hugger Z

iTrader: (4)

Isn't there a way to adjust the spring in the wastegate without changing the springs? I thought someone said you can twist something or spin something to adjust the spring load. That way you can fine tune them. I guess I got lucky and mine were set correctly. I didn't check them and they peak at 7.5-8psi. But I did get a PM to check them after I had my install finished and never got a chance to take them off to look. But when the car got tuned they seemed to be OK so I forgot about it.

MY99TAWS6

iTrader: (3)

They are simply big springs in the gates. Not much in there to play with and no adjustment .I think some guys do put in shims to get more boost but not less.
Usually tial gates are very good ,hopefully they will figure out whats up with the high boost. Not a good thing on a stock bottom engine for sure. I have seen many blown ringlands on stock hypercrap pistons.

tomz28

iTrader: (20)

your thinking BOV

MY99TAWS6

iTrader: (3)

Well the tial blowoffs are totally different springs and no adjustment either just like the tial gates. Nice and simple and usually super reliable thats tial stuff.

bigturboz28

try hooking up the wategate reference line as close as possible to the turbo. i.e. if you have 2-3 psi drop across your IC, then the pressure at the intake will be referenced to the turbo before the intercooler, so you will get less boost at the intake.

tomz28

iTrader: (20)

you have not seen a APS setup have you go to there website they have the installs step by step and you can see that the wastegate line comes right off the compresser side o the wastegate it cant be more than a foot

im going with springs at this piont thanks that is a good idea but it does not apply here