My birthday is in a few weeks, and that means it's almost time to smog. I think I have a handle on how to get MS to pass as far as tuning goes, but I'm still having some difficulties getting a clean road tune. I just finished installing the PWM converter board, finally got closed loop working somewhat well. Problem comes with steady-state cruise, I was getting an awful nasty bucking (captured in the screenshot below)
After some head scratching, acceleration enrichment toying, IAC disconnecting, I finally disconnected the TPS. Aside from an awful lean tip-in, the bucking is gone. This is a 99 head, 99 throttle body + IAC and a 99 TPS spliced in (technically, I got them off a kia sephia, but its mazda stamped and from a BP engine).
Now - calibration in MS seems to be awful.. weird. Even after a calibration, my TPS can show between 7 and -3 with the throttle closed. It seems like at 10% throttle the TPS reads 40%. I've already re-done my grounds, swapped out the TPS for another junkyard kia. Could I have made a mistake in wiring? Going from the 5 wire 94 to the 3 wire 99, I couldn't go by wire color because the Kia uses different wire colors.
Can anyone take a shot of their TPS wires so I can figure out pin position? and am I correct in assuming that red/black is the 5v vref, and the wiring should be
94 - 99
black/red - red/black (vref?)
lt green/white - green/black (tps signal?)
blk/blu - lt grn/red (ground?)
Other relevant details:
94 1.8, 99 head + intake
ms2 3.0.3u, v3 board (self built), sequential injection
jbperf p&h, pwm converter
including my very dirty msq - if anyone would care to comment on any obvious errors (fuel and spark is pretty close to default mspnp, closed loop idle is working but still pretty rough), I'd be thankful.