[84SVOrick]

Im new to this turbo thing, but i have a question and maybe somebody will have an answer. When ever I have premium fuel and the premium fuel switch is on and I take my car to high rpm's it some times does a blow back and loses all of its boost, (kinda like a back fire) and takes a second to respool. If this is a common problem how can i fix it??

Also What the hell is a VAM, I have no fuckin idea but everybody says its a good upgrade to get.

[NavySVO]

First thing to do is check fuel pressure compared to boost. They should rise 1 psi per psi with each other. Get a fuel pressure tester and run it from the schrader valve (near wiper motor) and run it under the hood and wiper blade (tape it to windshield).

Next, make sure the intercooler hoses are in good shape and secure

After that, check the VAF meter (what people call a VAM) hose going to the turbo inlet. Ensure the anti-collapse wire is still there. If not, cut out both ends of a soup can and stick it in there.
The VAF (Vane Air Flow) meter is the thing that the air cleaner is mounted to. It has a swinging vane that "measures" air flow through it and sends a varying voltage (via a wiper assembly) to the EEC to help schedule fuel delivery (injector pulse).

Do us all a favor, please keep the profanity off of the keyboard. Thanks.