Tuning Issues

[Eldest23]

Hi All

seem to be getting some issues with the ignition and throttle position going all mad when data logging giving the car a surging type feeling when running at a set speed say 30mph with constant throttle. It is a e40 ecu being used to run an LSA engine with a converter for the 24 to 58 tooth configuration. Any suggestions on what could be causing this would be much appreciated have a data log if anyone would like to look at it.

Thanks Andrew

[joecar]

Hi Andrew,

Please post log and tune files.

If you're running the LPE 58x->24x converter, make sure it is mounted in a location that does not get hot.

[Eldest23]

22758 this is the data log

[joecar]

Post current and stock/donor tune files.

[Eldest23]

Can't post tune file at present.

[joecar]

From looking at your log, the problem appears to be due to spark timing.

[Eldest23]

Indeed its what is causing it that is the issue could a bad MAP sensor placement cause that sort of issue?

[joecar]

How is your MAP sensor placed and wiring routed...?
You log shows your MAP signal to be a little noisy.



BTW:
You are logging too many pids.
Remove these: WO2Sxx, ACTLAMBxSx, KNK_E40_DMA.