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[86gn]

Having trouble at cretain boost or mabye its at a certain part of the throttle.At 5-8 psi the car will start to cut out and buck and i can see the boost gauge surging everywhere,let off its fine give it more gas great no knock its almost like its pushing too much boost and the throttle blade is not letting it in and its kicking back out.

Anyone?

 

[bob86gn]

Check your wastegate assembly, make sure the hoses do not have holes in them, check your wastegate to make sure the diaprgm is not shot. Also, make sure that your intercooler hoses are tight and are not blowing off when the boost goes up. My buddy had the same problem. He was pushing the hose off of the up pipe from the intercooler. Car would run perfert until 7 psi then it would buck and shudder. It took us a heck of a long time to figure this one out.

HTH Bob

 

[86gn]

 

[galoush]

Bucking

The Battery cable positive shorting on the header when the motor torques over if you havent checked it out yet.

 

[galoush]

bucking boost

I think i missed part of the problem but you never know.

 

[sixgun86gn]

mine was doing the same thing and it was the coil pack.Ive been fighting that problem for weeks now and all that time the coil ohmed good but was bad under load.

 

[86gn]

Thanks for all the help will check those things out tonight and hope it helps.