SURGING ISSUES, SC CAR 1k-500rpm, back and forth

SURGING ISSUES, SC CAR 1k-500rpm, back and forth


Hey guys,

I'm almost done with fixing up the little things on my car which I picked up about 3 weeks ago.

Its a 505rwhp beast but I'm thinking something is off. It surges from 1000rpm to 700-500rpm with a constant fuel pressure of 39-40 and a vacuum gauge which dips to about 10.

There are trick flow track heat heads on this car with a trick flow track heat intake.

I was told the cam is a trick flow cam as well as has the specs of a 498/512 split.

I am still new to supercharged cars so excuse me if I'm a bit unaware of certain things.

Any clarification would be appreciated. I knew the lope would be somewhat obvious but this seems like something else to me. It has a vortech v-1 s trim by the way.

I set the tps to .99 and the iac is clean. What do I do?

Jason

the tb is sealed off with two rubber nipples so I'm guessing thats a no for the first question.
hmm, a bypassvalve, i think thats the round cylinder that sits in the bottom left corner of my engine bay near the sc.

here's a pic of my engine.
http://www.mustangmods.com/data/11218/engine.jpg

from what I've been told its running at 10psi. 255 fuel pump. The boost gauge shows 10 and dips below to 8 at idle.

lmk.

Jason

by the way, the boost retard is set at 1.0. Now I don't know a whole lot about this, but doesn't this adjust the timing? Or would this not affect the timing at idling?

it was tuned at .5 for the boost retard.

http://www.mustangmods.com/data/11218/dscf0690_large.jpg


another thing to note. In order to start it, it seems like I almost have to give it gas with the pedal all the way down. Does this mean anything?

Jason

to be honest I don't know the sizes of the mass air or tb. I guess I could just take a ruler to it right?

I just did some reading and here are some suggestions I've gotten:

Change fuel filter
drill into iac (don't really like this idea)
flip iac upside down (suggested for aftermarket ones, which mine seems to be)
install idle air bypass kit (where do I buy this)
and lastly, pcv valve.

I guess I'll just try doing some of this.