BTERRY1

Followed Vans video on you-tube and set pressure to 15lbs. Let me back up. Stock 86 with fresh rebuild. only add on is a Lindsey boost enhancer dialed back to 6lbs. Could not find any major leaks. One small one on the banjo bolt quickly rectified. Entire system does not hold pressure. I know stock waste gates are old with weak springs but would it cause me to loose all my pressure down to 5 psi fairly quickly? Now that I think of it I should have clamped the line to the waste gate but its all put back together now.

Car runs strong and boost to 11 psi no problem but does drop to 8ish by 5k. Will a manual boost controller help or once it opens will it bleed off again. The cars feels and is quick but I cannot help but think of its potential. Should I bite the bullet and go dual port and MBC?

I don't really want to give up my factory over boost protection.

Or is there something I am overlooking.

Thanks

Brian

eman930

It's your wastegate replace it

BTERRY1

Ok. If I grt a dual port can it be operated as a single port for now to keep over boost protection till later on when I add chips/MAF etc?

my current goal is to see just how good stock can be. Thx

Tedro951

Did u clamp the wastegate line?

Dal Heger

Hi Brian,

What your describing is normal boost behavior with the stock chips. The car will boost up to 11 or so psi then bleed down to maintain 8 psi or so from the factory. The waste gate is fine, if you don't believe me clamp off the boost control line to the wastegate and carefully get into boost, you'll over boost quite quickly.

Good luck.