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Needed to do a quick systems check prior to taking it to the track. Also had a newly rebuilt/upgraded tranny, along with a lower 6th gear ratio installed, so wanted to see how that felt.
There are some deserted backroads where I store my trailer, so was able to do a few hard acceleration runs. I didn't have any active (flashing CEL), or stored (CEL staying on) misfires on acceleration runs, and I ran the car to almost the top of 6th gear to 130mph. In the past, the car would misfire on acceleration around the top of 4th, and in 5th or 6th gear. Sometimes you could feel it, other times you couldn't, but the CEL was still flashing, and would stay on after. The good news is that I didn't see any on these acceleration runs, but won't claim victory until a full weekend on-track test is completed without misfires. Car felt super strong though.
One thing I did see though, atleast I think I did, as it happened so fast, was a the CEL flash quickly just a couple times on a massive deceleration/braking phase after a run to 125mph. I was bedding in some rear rotors so gave it a good hard stop and thought I saw the CEL flash.
I'm wondering if this could be due to the massive forces on the crank, and it's sensor readings due to deceleration? I have a Fluidampr harmonic damper, and it's a viscous type, so it's forces may change a bit with crank speed I would imagine. I'm guessing that it's possible and not an ignition related CEL/misfire, since it's in deceleration. I know Subie motors are sensitive to crank position, so I think it might be related to harmonic damper/flywheel. Any thoughts?
My plan is that if I have any non-ignition type misfires or flashing CEL's at the track, then I'll swap the OE harmonic damper back in and see if it makes any difference.
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