Well, whatever the case I guess it doesn't matter to me since I've already taken the step to get tuned.
I reflashed the car with the 89 Street tune. Runs well. No high RPM ping, just smooth and strong. I think I'll stick with it.
Did uncover some new problems, though:
Brakes. As I was pulling out of my neighborhood and let off the throttle to cruise, I could hear a low metallic grind that would pulse with each rotation of the tires. Sounded like a pad lightly grinding against the rotor. Sure enough when I checked the rotors they were quite worn... much more than the last I checked. Both front and rear.
This car is heavier than the Z with more aggressive pads, so it's probably not a surprise for this to happen at 25k given how I drive...
In any case, I'm in the market for new rotors and pads now. I think I'm just going to stick with blanks.
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- Steve
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