hi all,
i have a 1.6, 1993 miata and
i have just installed my speedyefi pnp ecu but with a bosch iat sensor and aem wideband 30-0300, now i have loaded the base map but i cant seem to start it up she crankes but dont turn over if i add a bit of brake clean in the intake it will for a second and do one back fire i have bearly messed with anything but i cant seem to get my head around why it doesnt start. car smells like fuel when cranking so im getting fuel and starts with brake clean so also sparks it ran with no issues on the stock ecu a few hours before. Would anyone have a clue to what is going on? messing around in ts doesnt seem to help or worsen the car in any real noticable way. added my tune in attachment hoping its something obvious because im a noob when it comes to this. Thanks all

 

Req. fuel should be more like 12.7, which there's a chance that's your issue, since adding more fuel (brake clean) seems to help, but changing from 11.7 to 12.7 would only give you an additional ~8% fuel. Trying jumping your fuel pump in the diag box to see if the ECU is not triggering it, otherwise we're flying blind without a log. Take one while cranking and attach it here.

 

changed the 11.7 to 12.7 now and i think made a log hope that helps because i have very little clue what to look for. since i can smell the fuel from my exhaust i would assume fuel pomp is working fine?

 

i just jumped the fuel pump and it started up.....new log added

 

Ok, so it's not turning the fuel pump on. Don't really need to look at the log, it just needs to be tuned now.

I'm not sure how the speedyefi triggers the fuel pump, but I know the early MSPNPs required the ST fuse to be removed, and if you didn't, you'd fry the FP circuit. Re-read your instructions and/or contact the manufacturer, see what they say.

 

i have that fuse removed so thats why i dont get it at all, but thanks a lot is it okay to just keep the wire in and hope i can make her run right? any tips before hand so i dont fck something bad that i should know?

 

Hopefully you did extensive reading before purchasing the ECU to make sure it's something your capable of tuning. If not, start reading, or contact someone who is knowledgeable in your area to have it tuned, or contact someone to remote tune it.