Quote:
Originally Posted by gsxr
The math doesn't compute directly because Myna does additional modifications. There is something we are missing besides the cross-sectional area of the element, most likely lift/stroke, which is an unknown (Myna may re-grind the cam; which is likely as their RIV timing specs are waaaaaay different from stock). My dyno tests have shown the 5.5mm elements on a 603 pump almost certainly can't produce more than 170-180hp. The 3.5L pump probably just shifts the delivery towards the lower RPMs while not actually pushing more total fuel quantity. It would be interesting to get spec sheet for the .97x pumps. I'd love to be proven wrong though, if you can get 200hp (or more) from a tweaked 3.5L pump with stock 5.5mm elements that would be awesome!
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Agreed, and agreed. I'd really be pretty happy with 180hp if it isn't smoking or running high EGTs, should be well within the turbo's range also. I'd be happier with 190 though.
As far as the 170hp-180hp, some have claimed that the pump is good for more, I don't know but hope to find out. If I weren't so cheap, Dave's Diesel here could put it on the bench, max out the flow, and calculate from the flow what the max theoretical hp would be. Was your trial with the stock KKK?
If I can do it, and I have a stronger launch and stronger mid-RPM power, it'll improve the car vastly over the normal driving range. My E320s had a really nice powerband, same gearing, and more power. Without the ASR the launch torque would exceed available traction. That was plenty. The goal is to have enough torque at low to mid-range throttle settings that I don't need to push the pedal down into the downshift range, which makes it so much more of a civilized feeling powertrain. Frankly, the only times I ever rev my car up over 3500rpm or so is when I want to blow the cobwebs out on an entrance ramp.