PSI Barrell Valve Mod

The new PSI manual shows the slot being different for funny's versus dragsters. Is this the case? Way back when we had ours modified there was only one mod.

 

I'm sure they would be different like the application... but...IMO the mods given are a starting point only.
The amount of spool rotation will vary depending how your linkages are set up, and also depending on the injector you choose, so you really need to tune the spool to suit your car.

 

Call Fred Mandolini. He pulled ours out when down there dyoing and modified it on the spot. Never seen anybody with the knowledge Fred has. Let him tell you and do what he says. Mandolini Performance Developement, Inc.
630 782 0010. Fred's wife is a sweetheart.