Techsalvager

Update:
Since I have two engines, one that came with the car, and another I bought, I have an extra CAS, so I pulled and cleaned off the other CAS and hooked that up directly to the MS with the stim board attached so I could see if it would read from it while turning the wheel. Success, it does read from it correctly, so now I'm wondering why it won't read from the one in the car? Time to think what it maybe, wiring posibiily maybe bad connection, or another reason. Anyone know where I can get a cheap connector for the CAS from?

Thanks
Justin

shifty35

I've read that some CAS that work fine with a stock ECU refuse to work with MS. Don't know if this is with an older style input circuit or not.

Braineack

iTrader: (62)

I have not read this. it works with optical or magnetic CASes.

shifty35

I didn't mean some "types", I meant some sensors of either types. I've already had a CAS randomly die on me in my 2 months of Miata ownership, so I'm not fully convinced of their reliability. Some may just have weak signals when they are close to dying.

I did "repair" mine by replacing the Hall effect sensor inside with one from a SOHC Protege distributor, so I guess the electronics are actually failing.

Braineack

iTrader: (62)

I'll agree that MS is more sensitive with them, oem ecu probably has a lot of filtering and what.

Techsalvager

Well an easy way to test is to hookup the in car sensor to the MS with the stim connected while the MS is connected to a pc and turn the engine around while logging to see any rpm output from the CAS, if the CAS shows correct output from connecting directly to it, than I know it must be somewhere in the wiring from the MS to the CAS, either my harness or cars wiring.

But the car works fine with the stock ECU. so I maybe going over my harness again.

Techsalvager

Harness wiring, the cas wiring are\were off by one pin, so 24 was on 25 and 25 was on 26

Braineack

iTrader: (62)

thatll do it.

Techsalvager

Hi all
So I got the CAS fixed correctly.
Now I got her to see rpms, and while cranking she allmost caught but didn't, sounded like she would. Anyone know cranking settings for a 1.6l?

Heres a log of my newest attempt

Appericate any help, gonna read though MS extra manuals.

Braineack

iTrader: (62)

http://www.megasquirtpnp.com/models/...20no%20AFM.msq

Techsalvager

this for a 1.6l with the mods I have done?
Just want to make sure

Braineack

iTrader: (62)

its the mspnp 9093 basemap

Techsalvager

whats the difference beteween the with and without maf files

Joe Perez

iTrader: (8)

The calibration for the IAT sensor.

Techsalvager

hmmm

so after updating my sensor info
flashing the firmware
and pulling my spark plugs 3 times to get the built up gas out of the cylinders

Nearly there, anyone seen MS inject abit of gas at startup to lock up the engine.

It nearly catches this last time after getting most of the stuff straighten out. Just not enough. Sorry I forgot to log the data, I'll do another round to try.

Not sure if its not getting enough spark or timing of the spark is off or injecting too much gas. Probably need a log to tell.

Braineack

iTrader: (62)

what diagram did you follow to wire the harness? if you followed mine, the tps connector must be unplugged...

Techsalvager

I didn't even wire in tps and vref 5+ into the wiring harness I made, do I still need to unplug it?

ampz

You may have your spark wires out of sequence, try swappping the pairs of wires around on the coils (or swap your coil triggers).
That happened to me when I built my harness.

(Just a suggestion)

Techsalvager

I have feeling its timing that is off. Will test later today

Matt Cramer

IIRC, we put a couple minor changes to the fuel table in the no-AFM version. Nothing big, though.