kojab wrote:Check your TPS closed throttle Voltage. Should be around 0.7V - 0.8V approx. Typically it is less than 1 Volt.

I set it to .25V. Anything higher the TPS % value was above 0. Seems like the lowest this could be. If I had .7V, the % woold be 10% open I'd guess.

Ive had a look at your logs in the other thread. You fuelling seems very rich at idle. Your short term integrator is -7 in places to inject less fuel based on what the VE is requesting, and yet the O2 is still beyond the limit of the sensor rich. I think you need to tune your idle area VE better, t...

Scanning logs ... the only item I can find in one case, the MAT sensor was unplugged which then reads -36 or something. I could see this cause a fueling issue ... but should not be high idle?

Trying to solve a higher than normal idle. When engine is warm idle goes higher than commanded idle. Looking for 1100, but it revs at 1500, and climbs to 2000 at times. IAC is around 75-80 and does not go down to reduce rpm (maybe outside of idle zone?). I would expect to see IAC drop down to zero t...

Im well late to this but if you can post a bin and a log I think that'll help with diagnosis. This is the latest BIN. Has force open loop ... but otherwise similar to what I have been working with. VE and spark at idle are pretty flat as my starting point. No test drivces. Log file is the one where...

It's not the base timing it's the spark reference angle. From my collection of notes Hall Effect are different for 4,6 and 8 cylinders but Inductive use 10 degress for them all. I have no idea what it is and how it changes the running of the engine. maybe someone a bit smarter can elaborate. Ok ......

I picked up in the second video your using 90 deg for spark reference. I may be wrong but from my notes spark reference angle should be 10 degrees for a inductive pickup. Thats what I have on 2 four cylinder cars and they both run fine. Don't ask me just what it is and does but it may pay to check ...

I did make some comments but after starting out looking at the video it's in a car not a boat. I'll watch the full video. Without going thru all the posts what type of ignition are you using inductive or hall effect? Inductive pickup. GM HEI. TBI Throttle body for fuel. It ran well for the last 2 y...

For anyone interested in details on the Iron Duke Turbo ... to a Mercruiser 3.0L turbo ... you can watch my Son's youtube videos on it. Lots of details for those that like building. Here is the one were it was first started up https://youtu.be/ZBkzmVFx4JA (kinda funny how well it ran that day ... ) ...

Unable to answer your questions Mark but have you made sure the fuel supply is working as it should? Sounds like it's not keeping up to demand. There is lots of fuel. Dealing with a too rich condition most of the time due to the vacuum of the cam. But getting that dialed in. So far ... forced open ...