Boost problems after 20lbs

[dank GN]

I'm sure he had it rebuilt 12 years ago so it has to be good still

 

[turbobuick1035]

When you reach the 20psi, and the car falls flat, does the boost drop off simultaneously? May be the actuator or a vac hose collapsing possibly?

It will drop off a little..but then if I just back off the gas pedal a little boost drop off to 17 18lbs and pulls again..everthing fine..alky working fine..no detonantion

 

[dynoman]

If you only had the turbo off then got this problem, I would check waste gate puck alignment to make sure it is sealing properly. What O2 milivolt reading do you get on scan master when this happens?
I would also double check hoses post turbo for boost leaks.

 

[TurboBuRick]

A misaligned wastegate will not make the car nose over.

Again look at fuel or air starvation.

 

[dank GN]

Check your muffler . I had a clogged muffler that it did the same thing . I'm sure you have checked it though .

 

[turbobuick1035]

Check your muffler . I had a clogged muffler that it did the same thing . I'm sure you have checked it though .

This is running off the downpipe

 

[turbobuick1035]

A misaligned wastegate will not make the car nose over.

Again look at fuel or air starvation.

Maybe fuel pump or 1 is messing up..i have internal and external pump. Gotta be something simple..ill look at vac lines as well

 

[No disintegrations]

Waiting to see if plugs fix it, I think they will.

 

[hensleyt]

I have a turbosmart boost controller (Eboost street)that will do that if you over boost.Do you have a electronic boost controller?

 

[Chuck Leeper]

1 is messing up..i have internal and external pump

Let me guess... The smaller is feeding the larger???