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Topic: First Trip with upgraded ISM 500 HP (Read 852 times) previous topic - next topic

First Trip with upgraded ISM 500 HP

First venture out was to the North Atlantic Chapter Rally at New Castle, Pa. On the drive up, the average fuel mileage was 8.5 MPG, it was not a mileage test, I drove it more like I stole it, enjoyed the mountains, as the power was way more than the 450 hp setting, pulled them all at 70 mph 6th gear, and no need for full throttle, it just goes.
The recalibration on the ECM seems to have  a lot more torque in the lower rpm area.
Changing to the resonator is the first step, slightly more exhaust noise but everyone who has heard it, approves.
The last mod was the new turbo and associated parts and the recalibration on the ECM.
Feel the fuel burn certainly is no more than the original configuration. I am sure it will burn more fuel if you push it.
More later.