my SC is slow

93SC 5speed

Registered User
When I bought my SC it was completely stock with a newly rebuilt motor and ran great. I then purchased a bunch of aftermarket parts, did some porting, and tons of labor and well it isn't any faster!

Under wide open throttle the rpm gauge shakes while accelerating, it didn't used to do this, and then after 4000rpm it acts like it loses half it's power and just dies out, no bucking or anything. It wont even spin the tires in 1st, just a few churps and it's off.

What did I do wrong? Fuel pressure is set at 40psi, Intercooler and vacuum lines are sealed and idle is correct. Did I open up too much air?

All upgrades are listed in my signature, all parts were purchased at supercoupeperformance.com
 
93SC 5speed said:
Under wide open throttle the rpm gauge shakes while accelerating........and then after 4000rpm it acts like it loses half it's power and just dies out

What do you mean by "Shakes"? Is the Tach eratic and the needle bounces all over? Correct sampling tubes for the specific size injectors you are running?
 
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