VN V6 Corolla - Haltech can't get to AFR of 14 without stalling

[MWP]

As for ignition advance, at hte moment I"ve bumped it up to ~35 degrees to see what happens. It runs OK but not well enough for that to be the 'problem'.

35deg at idle is far too much.
The engine will be trying to run backwards with that amount.

[stradlater]

well in this circumstance, 10 degrees thru to 35 makes stuff all difference... So there's something else wrong clearly.

[oldcorollas]

Nah, the air temp corrections tables are not in use yet, and it's not TPS driven...

The MAP sensor shows some interesting results, but appears to be reacting appropriately. (0PSI on cranking seems a little odd to me.)

got a restrictor/filter chamber in the line? depending on the haltechs sampling time, it might be getting fluctuating vac readings (due to pulsing) and the fueling bouncing around to suit?

0psi = no vacuum? or full vacuum?

any issue with power sources during cranking?

[thechuckster]

where is your map line coming from - you should get some vacuum during cranking (certainly with the throttle closed). Am assuming that 0psi = 100Kpa = atmo

[stradlater]

Nah, there's no filter or restriction in the line to the Map sensor. Infact it's the stock location for the map sensor these engines come with.

WHen you crank it over, the ECU AND the boost gauge, both show 0PSI. which means neither negative nor postiive manifold pressure, ergo, ATMO.

When it gets running it then sits at around the -5 psi mark, which in my opinion isn't great, but it is a pretty old and cactus engine.

I would imagine that the sensors are probably right and it's the engine that's cactus.

The other thing MIGHT be a power source issue, and I'll attack that too. Although the alternator is working and charging.