I followed my Helms step by step to adjust my timing belt and now my LS accelerates MUCH better. It used to feel very restricted in the higher RPM's but now it's a clean pull to redline. Did the adjustment cause this?

Also, my fuel pressure is around 36 psi at idle with the vacuum line on and the Helms says it should be within 31 - 36 psi, should I bump it down a bit?

Thanks guys

 

I would bump the fueal pressure a bit. But just try it. and see what happens. Good luck

 

Bump it up or down? Fuel consumption is pretty damn high right as it stands.

 

down

 

Down to? Maybe 1 psi at a time? As I lean it out it should make a little more power right?

 

Adjusting a timing belt should not affect performance. Remember that what counts is the number of teeth between the front of the exhaust cam sprocket (or cam sprocket, if SOHC) and crankshaft sprocket. And while the tension does change this (as the belt stretches), it is typically unchanged on an actual running car since there is always going to be the most tension on that part of the belt (since it is actually pulling). Even when fairly tight, the rear part of the belt will always be looser.

On the other hand, changing a stretched belt can increase power. A stretched belt can cause timing to be retarded on both cams, resulting in power loss.

 

When you re-tentioned the belt, it changed your ignition timing.