One other thing Braineack, I am using your 1K resistor jumper method to try and maintain my tachometer function, but it isn't working. Is there something I am missing other than just jumping IG to B+ in the diagnostic port?

 

are you coil connectors 3 pin or 4?

 

revert the firmware? Check the release notes from the version you used to the version on the MS?

 

 

 

 

Cool, now get it tuned and running well. Then you can start adding other stuff back in. Try to only make 1 change at a time so you can catch it if it goes sideways.

 

 

If 4 pin then the coils are providing the tach aignal, the 1k on ig- is just a pull-up. Dunnoz

 

Well... I guess the only way to test the output is with a scope right? (Which again, I don't have...) I'll make sire all the wires have continuity in the right places, rule out everything except the signal.

 

Stevejack, were you ever able to get the VE Fuel table sorted out to look a bit more normal? If so, could you post how it looks now? I'm new to this also.
Thx. Hope it works out for you.

 

I was indeed. Loading the DIYAUTOTUNE base map (read: the entire tune) gave much better results, and after a few datalogs, the map hs changed only a little using VE Analyze. Looks like the below now. Please note my current maximum is 100kPa. I will not be running boost from my M45 until I sort out sequential injection and a knock sensor. So anything above 100 is currently untested and unverified to work well for me. Though the rest of the map has been pretty great and I dont expect many problems.

 

Sweet! Looks good thanks for the fast response

 

Received all my parts from Mouser and JBPERF for my 4 channel injector expansion board. Assembled it all Tuesday night, and it started first try yesterday! I have never soldered SMC before, so that was new and "exciting". I setup my injector order wrong at first, i wired everything 1-1-1. Realized my mistake after getting some unusual AFR readings last night, and changed it before I hit the hay. The injector channels are now hooked up in the firing order of the engine. INJ 1-1, INJ 2-3, INJ 3-4, INJ 4-2. Driving and datalogging on my way to work this morning, it all seems quite grand.

Still no Tach Function on dash.... makes me sad. Going to have to diagnose that next.

 

Okay, I still need some help with the tach.... I checked my grounds and my 12v supply to the tach. The needle quivers with the rest of the gauges when I key on. IG- on the diagnostic is confirmed continuous with the connector on the coil pack. Measuring frequency with my multimeter between IG- and ground gives me 100hz at idle. Using a 2k, 1k, or 470 ohm resistor from IG- to 12V gives no change in results on the dash.

At one point very early on, I had my tach signal wire jumped to my CAS. When I couldn't get the car to start I identified that as the issue and removed that jumper... Could that have killed my tach?

 

check ig- to ground. is it constant continuity?

 

 

it should be the constant 12v (when jumped to b+ via a resistor) -- then when a coil is active, it grounds the tach singal. tach just measures the events per cycle, and viola engine speed.

ive seen bad coils keep ig- constantly grounded, and thus no tach.

 

okay... so I got my scope, and finally stopped procrastinating about using it. Anyway, see attached. that is the unchanged signal (no pull up) coming off of my IG- wire. Thoughts? Is that normal looking?

 

When I jump IG- to 12V with a 1k resistor, the signal changes to the attached noise @ 1.3V, the 20V clipping light comes on, and the scope warns of overvoltage protection. Im thinking its getting transient spikes from the coil... Is that normal? Should i just swap coils for poops and chuckles to see what happens?