jerrah

After really checking everything I found I had 4G connected to VR IN + not VR2 IN + I swapped it over but now I still don't have any RPM on kicking the starter.

I haven't tried another CAS yet.

Yes the fuelpump is running but I'm more worried about getting an RPM signal.

jerrah

CAS Wiring looks ok. I'm going to redo the jumpers between the DIYPNP and adaptorboard tonight.

Starting to get really frustrated with it. Might have to resign to buying a MSPNP. :( But I would test it on my mates 1993 before I go down that road. My parts supplier is in Japan atm, so I'll have to wait on a CAS.

jerrah

Removed every connection, double checked it against the wiring diagram and did the best solder I could on each. Was a fair effort that took most of the night.

Unfortunately it's past midnight so I'll test it after work tomorrow.

jerrah

Just got home from work.

Stock ECU + CAS connected = starts
Stock ECU + CAS disconnected = cranks without starting
DIYPNP ECU + CAS connected = cranks without starting.
- No sync
- No 'teeth' in diagnostic view.
It's clearly not talking to the CAS - but I swear I was getting a signal the other day.

I've checked and rechecked all my wiring. I'm going to try connecting it to a 1993 MX5 in a few days and see if it gets a RPM signal since I don't have a spare CAS.

My jumper wires are per Matt's instructions.

My wires were all underneath originally but I put them on top so you can see where they go.

xitsam

Have you checked your Software as well?

Microsquirt are installed?

miatauser884

iTrader: (11)

I just wanted to thank everyone for the support I've received during my diypnp build. I put it in the car and started it up last night. Everything seems to be working ok. (idling only, I haven't driven it yet). Before I go driving I have a few questions about some of the tunerstudio settings. Primarily in EGO and general settings. The max and min ego settings seem to be too close. I'm sure that I don't want wideband control at full throttle, but the max should be higher than 105 kpa right? At the moment I plan on running about 12psi (~183 kpa) I will stop boring you with the discussion. Please help me with the settings in the windows that are included in the following images. I don't want to drive the car until I can confirm good values. Thanks again

jerrah

I pulled the Microsquirt to take the photo. It is normally installed. I've checked my TunerStudio config many times and sent it to DIYAUTOTUNE to be checked.

jerrah

Last night I tried my DIYPNP on another 90-93 MX5.

Same result as my car in that it's not getting a VR2 signal.

I verified that VR2 is going to the same pin on the socket that the other guys here are using and then that VR2 on the board is going through the VR2 resistor (in the 5v position). Checked the resistance on the resistor and then verfied that the VR2 resistor has continuity through to the pin on the Microsquirt board.

DIYAUTOTUNE has suggested flashing the firmware again so I will try this tonight.

FoundSoul

iTrader: (5)

The EGO max seems reasonable to me, I personally don't want the ECU making changes to my tune under boost. I'll tune it right, and I don't want to chance a bad sensor, connection, misfire situation, sending errant wbo2 info to the ECU in boost that it would try to correct on. Set it right on the dyno and forget it. Monitor it with a wideband gauge, and if the readings ever start to drift you know something changed. Your filter is clogged, your plugged are fouled and starting to misfire, something.

On the overboost settings, I'd set it either right at or maybe 5 or so kpa higher than you want to boost to. That's pretty much that.

Idle advance needs are personal preference, it can be nice to use but isn't needed, check the manuals to exactly how to set it up.

Alot of the other settings you have displayed the defaults and/or current settings are fine for. And as for everything else it should be covered fairly well in the MS2/Extra MegaManual (MS2/Extra Manual Index) and you can also reference our DIYPNP base maps we've generated and that are up for download at DIYPNP Available Models at DIYAutoTune.com. Though keep in mind settings that need to be tailored to the car, or that are subject to user preference, we didn't setup in our base maps but left that to you. In those cases the MS2/Extra manuals will be the guide to making the right decisions for your car.

miatauser884

iTrader: (11)

Thanks for the input. I have found the msextra manual very informative since I posted last. I will check out some of the other maps. So far I have been very happy with the base map. I've only changed fuel and spark. The car started up perfectly with the base map. I plan on taking it for a test and tune this weekend. Then I'll add the sequential and individual spark. I'll report my experience.

xitsam

Have you removed the Boot Jumper?
I had today the same mistake, that the car wasn´t start with the Boot-Jumper installend *Doh*



LOL

jerrah

Boot jumper is definitely not installed.

xitsam

Can you make a clear big picture of your DIYPNP?
Front and BACK, i will compare mine and yours together.

xitsam

I found yesterday also a BUG, i wrote in the past about the no adjustable VTPS problem, fact is, in TunerStudio the VTPS adjustement still not works, BUT on Megatune Software works all fine. I am runnning MS2 V2.1.1 on the DiyPNP.

This is also a hint for jerrah.
Try Flashing the DIYPNPwith Megatune (Load Tune) and load the flash Firmware again.

xitsam

Checklist for DIYPNP 9093 Miata

IAT - 4P
CLT – 4O
TPS SIG – 4L
O2 – 4N
OPTO IN- - 4E
VR2 IN – 4G
IAC – 4W
Fuel Pump – DB15 Pin ?


INJ2 – 4V
INJ1 – 4U

12V – 1B
VREF 5V – 1N
SG – 4D
SG – 4C
GND – 4A
GND – 4B

ING1 – 1G
ING2 – 1H

Be sure your FuelPump is running, if you not sure, simple jumper F/P and GND in DiagoseBox.
You must hear the Fuelpump working on "IGNITION ON" without running engine.

jerrah

I've tested two other CAS's. Not getting a 5v on VR2.

Xitsam have you got yours running on a 91?

jerrah

In a 90-93 the tacho gets the signal from the ignitors?

So with a DIYPNP the RPM is taken from VR2? Why not use the same signal as the the tacho and read TDC from the crank?

xitsam

Yes, car is running fine, not tuned yet. but ist ideling with my map from mspnp

xitsam

del..

miatauser884

iTrader: (11)

I hooked my fuel pump wire from the DB15 into the lt green wire under the dash (from the MS install thread) I get nothing when I turn the key on. When I jumper it at the diagnostic box it works. Did I hook this up correctly?

Update: I looked at the wiring in the diypnp and everything appears to be going where it should. A jumper wire from the fuel pump position to DB11 on my connector. From DB11 to the lt green wire under the dash. I decided to trouble shoot a little. I grounded the light green wire to the chasis and the fuel pump comes on. So either the fuel pump jumper on the board isn't good, the db15 wire is too small to carry a good ground signal, or I have somehow mixed up the wires on my db15. Does anyone know if the db15 wire colors are standard?

Edit2: It appears that I have mixed up the wires. I will report back with my findings.

Final: I had mixed up the wires on the db15. All is well. I'm about to go drive and datalog