I agree with Prosport, the tunnel ram has been great. Alot of torque and very consistent. We footbrake the car and launch at 2500 rpms and go 1.34-1.35 60 ft all day long on a well prepped track. Bob, John now has a best of 9.76. This car runs so well we don't even mess with the jets. We just dial it up or down a little based upon the weather predictor.