TheV's

iTrader: (2)

Hi, Very happy to be at this point now as I tried starting the car this evening. I can't get much more than a few pops and bangs - seems like backfires so I'm wondering if my timing could be to blame. Newbie - so go easy I've not done this before - I've attached my Data log. Rpms are synced nicely.

1994 block, 1.8 with 2003 VVT head
MS3X with 36-2 crank, VVT cam sensor
LS2 coils sequential run from MS3X
Batch injection run from main, stock 265cc miata injectors

Thanks for ideas on what to try next.

TheV's

iTrader: (2)

Here is the current tune

Braineack

iTrader: (62)

typical that means too much fuel, but it typically also doesn't start when it's flooding like that.

I dunno what are you showing in that log, it's like 4 secs long.

TheV's

iTrader: (2)

Yup, couldn't get it to "run" much longer than that... I think my spark may be too advanced (was 20deg @ 750rpm) and then too retarded at higher loads so I've tweaked that. Battery was also getting a little tired last night and I heard that might mess some things up too...

I checked spark on #1 but not the others so I should also verify I'm getting all 4 working...Lots to do...Thanks for your help !

TheV's

iTrader: (2)

OK, so I checked all sparks - look nice. Running sequential so can't test individual injectors. Revised timing and managed to coax the car to run while blipping the throttle - so I have a couple of log longer than 10 secs now....also adjust VE table to remove some fuel, but noticed AFR was in the low 20s at 2000rpm, so I think more work to do here....Anyhow, here are the new logs and new basemap.

Car is still popping and running really rough - almost like a misfire....I'd be grateful for any wisdom anyone wanted to share.

TheV's

iTrader: (2)

Gasp - just realized I've been running with "fixed timing" set - my spark is at 10 deg - no wonder it runz like crap ! - OK, that's embrasing