07vbluestang

i recently got a dyno tune and lost alot of low end with the addition of headers and h pipe. my frpp whipple tune dyno'd at 469 rwhp. i should of quite there. my dyno tune(455rwhp) is not right, the car bogs sometimes and doesnt pull like it used too. is there anyone here running brenspeeds whipple mail order tune? i have 3.375 pulley and would it worth it to buy the 3.2 ultra grip pulley from RR?

onederful100

the Reichard Racing ultra grips are a good pulley, but sometimes the extra grip means early wear on the belt.
i don't have any info on the brenspeed mail order whipple tune, but i do have a VMP email tune and it works great.
i have a gen 1 whipple, 3.5 pulley (which i rate at 9 psi, but only see 7 psi on the gauge)
i am getting 449 rwhp/ 419 tq redline is at 6300 rpms.

07vbluestang

my best friend owns a NAPA so i would be buying belts at cost. he has gates belts. i also work there 6 hours out of the week besides my 52hr/week cnc machinist job.