The PandaWagon has developed this incredible hatred towards cold wet weather. On my way to work this morning, I took off from a light, got through 1st, 2nd, then to about 4K in 3rd, and it bucked and sputtered something fierce. AFRs hit 7:1, at one point. I could watch it, as I approached 4K, the AFRs would just start going mad rich. This happens only if I'm more than 2/3ds throttle and above 4K RPMS. It was that way all the way to work. If I kept the RPMS below 4K, I could use as much throttle as I wanted. But if I was above 4K, then it would start being ridiculously stupid with more than 2/3ds throttle. It was in the mid 60's this morning and fairly humid. Not sure if that would make a difference. It first showed up on Saturday on my way into town. But only once. One of those "What was that?!?" kind of moments.
Here's the specs:
This is my 87 Wagon with an EJ swap. It's an EJ25D running on 92 Legacy computer and wiring. TSUDO UEL header with high flow cat, and 2.25" cat back. Intake is a custom SRI grabbing air from the fender.
I need to do some errands later today, will see if it does it again in the warmer weather.