I finally got around to getting my GT500 fuel pumps installed, smaller upper pulley, and getting a new dyno tune at VMP Tuning. I still need to install the Roush P51 clutch though. The GT500 fuel pump install was pretty easy. The hardest part about the install was getting the assembly into the tank. It takes some finesse to say the least, still not that bad. Than you plug the wiring into the trunk under the trunk floor and run the power wire to the fuse box in the engine compartment. The power wire FRPP supplies you with is just enough. I think it could of been another 10-12" and been perfect. Maybe it's just me ..
Once that was done we swapped the Roush TVS 2.95" pulley for a GT500 2.65" upper pulley onto my blower to increase boost. The first run we made 504 rwhp but we had major belt slip. So, we deliberated for a while and decided to increase the size of another idler. The center idler is already a 90mm. There is a idler to the far right of the center idler that we increased to 100mm which eliminated most of the belt slack. I'm still running Steeda UDPs, too. We never saw any more belt slip ...
So, with that said we were shocked with the next results .. As far as mods I'm running a Roush TVS R2300, Steeda UDPs, 2.65" upper pulley, GT500 fuel pumps, O/R X Pipe and Magnaflow Magnapacks. When I had the stock fuel pump and 2.95" upper pulley the car made 463 rwhp and 425 rwtq. The final numbers were 506 rwhp and 476 rwtq today !! I'm ecstatic to say the least. My goal was to hit 500+ rwhp with this round of mods and tuning. My car is my daily driver and the car is very streetable with VMP's tune. I really couldn't be happier. Boost comes on quick and hard. The car drives great when you're tooling around town.
View attachment 257407
Once that was done we swapped the Roush TVS 2.95" pulley for a GT500 2.65" upper pulley onto my blower to increase boost. The first run we made 504 rwhp but we had major belt slip. So, we deliberated for a while and decided to increase the size of another idler. The center idler is already a 90mm. There is a idler to the far right of the center idler that we increased to 100mm which eliminated most of the belt slack. I'm still running Steeda UDPs, too. We never saw any more belt slip ...
So, with that said we were shocked with the next results .. As far as mods I'm running a Roush TVS R2300, Steeda UDPs, 2.65" upper pulley, GT500 fuel pumps, O/R X Pipe and Magnaflow Magnapacks. When I had the stock fuel pump and 2.95" upper pulley the car made 463 rwhp and 425 rwtq. The final numbers were 506 rwhp and 476 rwtq today !! I'm ecstatic to say the least. My goal was to hit 500+ rwhp with this round of mods and tuning. My car is my daily driver and the car is very streetable with VMP's tune. I really couldn't be happier. Boost comes on quick and hard. The car drives great when you're tooling around town.
View attachment 257407