I keep overboosting?

[Moof]

it's a stock 89 Shadow ES. Well, almost stock. it has a 2.5 exhaust all the way back, no cat.

It will boost all the way to 15psi, then keeps hitting the cut-out point. I dont hear any detonation, and my spark plugs are reading fine. Is there someting wrong with my turbo, or the restirctor?

[Ubmbass]

I would check your vacuum line going to your wastegate. Maybe your exhaust has burned a hole in it, or it cracked from drying out.. Something is keeping your wastegate from sensing boost.

[Moof]

sounds like a good idea. I'll check in the morning before work.

Well, sometimes the boost works well. it'll taper off around 10psi.. then if I let off the gas and stomp it again, It'll jump to 14-15 and cut out.

[89daytonaTII]

since the car has a mitsu and you've upgraded the exhaust i believe that your just experienceing some nasty boost creep.

[Moof]

would a blown head gasket cause boost creep?

Just wonderin', cause after last night during a spirited run, I started smelling coolant

EDIT: hahaha i'm stupid. My coolant reservoir tank has a split in the bottom and is dripping coolant onto the block. "thumbs up

[turbovanman]

You need a cutout raiser on your MAP sensor line, your hitting computer cut-out at 14.5 psi. Get one at Dawes devices, they work awesome!!!!!

[Mike Radowski]

if you go that route, just make sure you have enough fuel to go with that added boost!

[turbovanman]

Right Clickhere33, make sure you have enough fuel or back down on your boost so you don't hit cutout!