Boost controller install

[AWDGasm]

This is a simple manual controller. I have it hooked up and working fine around town. It holds boost perfect in driving conditions that are around town. Yet, when driving on the HWY, if you are at 80, go to 4th and punch it, it goes crazy to like 22 psi and then bleeds down. If the boost is set to 15 psi or below the turbo will not spike. If the turbo is set to 16 or higher, it will hold 16 or higher in town but bounce to 22 psi when on the HWY and doing a downshift.

Mods on the car are air intake, upper ic pipe, BOV (turbo XS), and manual boost controller.

What would make this happen? Could it be the fact that the guy does not have any kind of aftermarket exhaust?

 

[Blitzed95Eclips]

sounds like your getting an insane boost spike with little mods. The only thing i can think of is how you hooked the controller up. When i ran mine the wrong way i would get insane boost amounts also. Tell me how you have it hooked up.

 

[herostar]

you're getting boost creep, really really bad. Get yourself a 3" turbo-back exhaust, and port your O2 housing.

 

[Blitzed95Eclips]

He may not have the money to do this. Does anyone know of any quick fixes that will help him out. Its easy for us to just tell him to go buy new parts but im sure if he had the money the catback would be on there already.

The only thing i can tell you to do is just keep the boost levels low or take off the boost controller untill you can get a catback.

 

[red91gst]

The last thing you want for boost creep is a big exhaust, in most cases with a stock flapper door this is what causes creep. Although it sounds like somthing simple, i've never heard of a car creeping that much on such little mods. Make sure the controller is hooked up right, side nipple to wastegate and bottom to + pressure in most cases.

 

[Blitzed95Eclips]

this is what i said at first but was thrown off. Do this. When i hooked up my turboxs mbc i first hooked it up to the bottom of the waste gate and the other line to the pressure line. I was hitting near 25-30 lbs of boost no matter what my controller settings were. Then i switched the line that went to the pressure to go to the turbo housing nipple. This solved everything. Try it.

 

[AWDGasm]

OK, I have the controller coming from the wastgate to the manifold line then from the controller to the wastgate. I have tried it both ways. on the controller. Both have resulted in the same. If I take the controller out of the loop and run a line from the T at the BOV to the manifold to the Wastegate, it runs 11 psi. Its weird. The only problem is on a HWY going 70- 80 with a downshift to 4th and punch.

I thought about the exhaust thing but I am now wondering is it could be the spring in the Boost controller.

Help is very appreciated.

 

[Blitzed95Eclips]

take the line you ran to the bov t and put this into the turbo nipple you had to plug up. It may sound crazy but it should work. The other line will go to the bottom of the wastegate. You want to take the stock controller out. You have a 2g right?

 

[AWDGasm]

Originally posted by Blitzed95Eclips
take the line you ran to the bov t and put this into the turbo nipple you had to plug up. It may sound crazy but it should work. The other line will go to the bottom of the wastegate. You want to take the stock controller out. You have a 2g right?

OK, I will try this. Would this not be just as running from the "T" to the wastegate? I have the nipple capped off on the t-25? Yes this is a 2 gen.

 

[red91gst]

What kind of controller is it? It maybe the problem, because just connecting a + pressure to the wastegate should yield the stock wastgate boost level, round 11psi i believe. So this problem only happens when u put the controller on. Take out the adjustment screw on the top of the controller and make sure the spring and ball inside are still there and not stuck.

 

[Blitzed95Eclips]

Yeah i thought this exact same thing when looking at it. Why would it make a difference to move it to the turbo from the bov but i swear it fixed all my problems. Just try it.

 

[DSMu4ia]

It's not boost creep. It's boost spike.

Newbs..

Boost creep is when it rises higher than what you have it pre-set at, and CONTINUES TO RISE.

 

[Blitzed95Eclips]

look at my first post..never called it creep. Did you do what i said to? Let me know if it worked.

 

[DSMu4ia]

Originally posted by Blitzed95Eclips
look at my first post..never called it creep. Did you do what i said to? Let me know if it worked.

Never said it was you. Just the rest of the peanut gallery.

 

[DSM Stang-Eater]

wats a good boost setting with only free mods, intake, and a mbc on a first gen? im following the tuners guide

 

[Blitzed95Eclips]

dont hijack a thread. If you have a question pm me and i will answer it.