well i got a regulator and wanted to know the right way to use it..i set i at 47psi and i dont really feel much differ...can anyone help? i have the gauge too so i know i set it right

 

What car do you have? When i installed my AFPR i could not feel the difference. 47 psi, for a 305 it is too much but for a 350 should be OK.

Are you checking your pressure with the hose on or off?

The hose has to come off to get the accurate reading.

PS. TPIS is claiming that they gained 22HP of on a stock 350 just by increasing the pressure. I think that this should be the joke of the day.

 

i got a 88 Iroc 350 TPI yea i think 22 is a lil too much...

 

I bumped my fuel pressure up from 42 to 47 and i have noticed a small increase in throttle response

 

For now I've been leaving mine set at 44 PSI. If you really want to tell the difference then I suggest taking it to a dyno. This is what I plan on doing once the weather gets a bit better up here.

 

what is stock pressure on an '88 L98 mass air car? What is best setting for same motor with cat back, hollow cat, headers, cold air intake, and good ignition? Thanks, I'm new to TPI.