urabus

When I'm cruising around 3200rpm at 70kpa the car is surging and driving me nuts. I logged it and my AFR's bounch from 15.5 to 12:1 when I'm in this range. Is this my accel enrichment I need to play with.

FRT_Fun

iTrader: (19)

Well judging from the log you posted I would need to see a non-imaginary log. Please post one

Ben

iTrader: (33)

Want to post up your datalog and .msq?

turotufas

iTrader: (7)

Post it so I can benefit thanks.

urabus

how do I post those things

FRT_Fun

iTrader: (19)

At the bottom "Manage Attachments" click it.

urabus

the bouncing is around record 2100

ScottFW

iTrader: (4)

When you play the log where it's bouncing around, you can see your accel enrich is rapidly switching on and off, which is a consequence of running MAPdot based accel when your MAP signal has Tourette Syndrome. Where is your vac line to the MS sourced? If it's not already teed off the fuel pressure regulator, try that first and see if it helps.

urabus

It is sourced right where they say on the TB.

ScottFW

iTrader: (4)

"on the TB" ≠ "teed off the FPR"

If you take the signal close to the throttle plate it will be jumpy.

urabus

what about the port at the very back of the intake manifold. I can run a reducer off that port.

Dlaitini

"the port at the very back of the intake manifold ≠ "teed off the FPR"

tee it off the FPR, it should help in dapening the MAP signal so it will not spike and throw it into trying to add extra fuel

urabus

I believe I have the problem fixed now. Tee'd of the FPR helped but did'nt completely cure it. After some reading I put a fuel filter in the map line and know the car seems much smoother and I can't reproduce the problem. Gonna record some logs and see if my map readings look smoother as well.