Speaking from personal experience... I've got a 2009 5.7 (Eagle) Challenger that's had a Procharger D1SC @ 8 psi since July 2011 (installed when motor had 50K miles) and about a year and a half ago I bumped it to 9.5 psi. I also installed a 392 (6.4L) fuel pump before bumping up the boost.
I've got over 133K miles on the engine now, and haven't had the engine apart. Just general maintenance. And no methanol.
I've been to the track a lot with the car... since new I've had it down the 1/8 and 1/4 mile 531 times, with roughly 230 of those after the supercharger install. All supercharger runs where either on drag radials (early on) or slicks (later).
Thanks for the input.
Thats what i hoped to hear. Was told to run the 6.4 pump but others said just go with meth.
I prefer the 6.4 pump over the meth setup. Meth setup is Just one more thing to deal with.
What # injectors are you using?
What size pulley for 8# and 9.5#?
I'm running these fuel injectors: 4891574AB (SRT4 Stage 1), 577 cc (55 lb/hr).
The D1SC shipped with an 3.70" pulley (for a 6.1 it would make 6-8 psi or something, but it pushed up to near 10 psi on my 5.7 due to the 5.7's damper being a larger diameter than a 6.1. This mix up wasn't Procharger's fault, the dealer I ordered it from messed up. Procharger sent me a 4.00" pulley which hit the 8 psi number and said to just keep the 3.70" pulley (which I swapped back to in the last few years).
I forgot to mention I'm running the HO kit as well.
A P1SC will need smaller pulleys to get the 8 and 9.5 psi boost numbers, unless they've changed the impeller design to flow a similar mass of air as the D1SC.
