i would like some feedback. all opinions are welcome, I'm new to this and trying to do things right. one small issue I'm having is random lean spikes while cruising, no boost, only in vacuum, just makes the car do a very quick little stutter. Misfire maybe? its odd. 6 port s5 keg with s5 t2 rotors.

 

Ok so I've cleaned some things up. My tables needed adjustments, I've removed boost control for now because I'm bad at it and need to learn before I reattempt that. Added PID ego control. And some other things here and there.
​​​​​​Only real issue that I'm having now is at about 3000 rpm -3500 rpm while cruising, low TPS, low vacuum typical about 14ish hg I am getting some stuttering. My gauge does a quick lean spike for a fraction of a second. It doesn't do this anywhere else so I'm confused. Misfire? But why. I'm gonna try to get a log but it's elusive.

 

are you loosing sync at that RPM.

 

I am not, I actually figured it out this morning. Pretty sure it was a ground issue, it's always a ground issue...

 

I was going to say, if you are using the Mazda plunger type TPS, when they get sticky weird things can happen like this. In the old days the Megasquirt cases had an LED on the front that lit up during an accel enrichment event, so it was easy to diagnose, the light would flicker when you were driving. Without the LEDs you have to datalog and look for TPSdot changes where there shouldn't be one.

 

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Thankfully I've switched, I'm using a full range Ford TPS unit