Those are some pretty awesome numbers. Roots-types make evil torque. How much lower is your s/c pulley than stock? Did you have to install a boost-a-pump also? I'll give DynoTune a try next time I'm ready for a dyno tune. Passen is always booked like a rock band.
Think I've seen your Cobra around before. Where's all the Mustang guys meeting at? Maybe next weekend everyone can come out and make the oil companies even richer?
The GT's are freakin' crazy with torque when they're supercharged. I played around with that 00 Powerdyne GT that Toy Barn had. I'm actually only running 6psi. I'll creep up to around 9psi on my stock block. Then, I'll have to go forged. Stock connecting rods will bend at 12psi.
A/F was set at 11.5:1, but danced around +/- .2 at the worse. Some people go to 12:1, but I prefer the safe side.
Actually I have a lot of timing pulled at low end, that can be added back in. My supercharger was erroring out my knock sensor.
Yes and no. One of those "sniffers" that they insert in the tailpipe.
Yeah actually, they raised their prices like 20%since they bought a newer dynojet.
Dyno'd the Cobra at Passen this Saturday. Great place to get a dyno done. I have the tune in pretty good shape, but need to fix the low-end torque.
How does this compare with some of the other Stangs on CR? Anyone streetable with 500rwhp or more?
http://24.123.56.74/junk/dyno1.jpg
RL, I understand what you're saying. Basically, the low end benefits of overdriving the supercharger are not worth the heat and boost relief problems at high end. I've noticed some people adamant about this pursuit have custom controllers and special "iris"-type valves on the blower intake side.
Thanks for the explanation. I will probably not attempt any endeavors in this area.
What is your suggestion on the bypass valve setup? Is bypassing to atmosphere a good idea to combat backwash from the ATI setup? Was thinking about a Lightning 90mm MAF as well. Would a larger MAF eliminate some backwash? Any comments are greatly appreciated.