A good closeup is really needed so the motion of the car can be disected. Just going off verbal is really diificult of teh interpretation of what may be going on.
A 1.48 sucks for 60' and my first reaction is that you're not hitting it hard enough for the first few feet. But you also don't want full power to come in too soon otherwise the tires will spin after the initial hit. Exact boost control is critical if you have that much power. Don't be affraid to hit it hard off the line, thats what gets the suspension working to load the tires but don't add too much boost too quickly after the initial hit.
Also, full compression on the rear shocks may not be good b/c it doesn't allow the rear suspension to move after the initial hit and help keep the tires loaded.
ks