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I have a stock VY Maloo file, but for a manual.
Attahced
132536

More of a lesson learnt thread than asking for help.
I?ve been struggling with starting and IAC counts in general with fueling spot on and constant RAF table updates. Russ K idle procedure followed...

Update: Looks like the IAC might not be physically opening all the way. I removed it when the IAC counts were at 310, unplugged and could wind the pintle further in. Re-installed it in the fully open...

I have a bit of a strange issue.
Background: I have a cable driven standard throttle LS1 with a cam and M6. It feels like I am struggling to get enough air into the motor when starting cold. It...

IAC when hot is approx 80-100 at idle. I will close the blade a 1/4 turn to bring it try and bring it down a little more.

The solution was to give it more air via the throttle blade and less via...

Update:
I have fixed the cold start issue. Now Im trying to get the hot start side of things sorted.....
To sort the cold start, I effectively went back to a stock setup and went through the normal...

Update:
I have been running MAf only to tune up the MAF side of things. Have been playing with timing at the same time.
Its in a spot where it runs great but still its terrible to start. It wont...

I lowered the start up air and delay (back to stock). It didnt help. I am running cats.

I went MAF only last night and took it for a drive to to try and dial that in a little and not worry about...

Original tune attached.
The engine/gearboox is out of a HSV Ute, but is now in a Torana.
It never liked to idle cold (before the cam) without increasing the base running air flow. Only mods were...

Yes, I can command the IAC to move and it does move (Can hear it when not running and it will effect the idle when running)

Thanks for that.
I went up to 0.75v on the TPS sensor (and then reset so it read 0%) and it still needed more air.
IAC counts were up at 290-300 when fully warm.
Opening up the hole 0.5mm...

Timing didn’t help a whole lot.
When warm the iac was almost maxed out. Idle trims maxed out when below 90deg C. It feels like it needs more airflow.
I opened up the hole in the throttle body...

Opening up the throttle blade did help a little, but i wouldnt call it a solution.
It JUST started without the throttle and took approx 15 secs to catch its idle and was very rough when it did so. ...

Had a play with a few things tonight (Approx 25 iterations....)
I went around in circles a few times. Less RAF and start up air didnt seem to help But im still not sure if it was not enough air or...

Copy that.
MIL on first MAF error
Less base running air flow
Richen up AFR when first starting

Will give it a go tonight and report back

Thanks for the reply.
Will update the MIL dtc.
In relation to the base running airflow, I got these numbers by adding a 3g/sec to the initial tune. The initial tune RAF was set based on what it...

Hey guys,
I installed a cam over the weekend (232/234, 110 LSA) and im having dramas getting it to start and hold idle. Its a 5.7 LS1 conversion (Manual)

The tune base (ive tried a bunch of...

Im assuming there is a MAF scaling issue.
Once i get the SD tune spot on, then i'll go back and try and tune the MAF and see if it helps. Not sure why the scaling would be out though? Brand new MAF...

Cheers for the replies!
Turns out running it in SD mode sorted it out. The MAF data looks ok, but for what ever reason it is causing a big drama.
Updated the VE table using the fuel trims to get it...

Bump!

So this issue has almost beaten me.
Changes introduced to try and recitfy:
- Remove/re-install fuel tank and pump to see if there was a clear issue with return/pickup lines (No issues...

Hello all,.
I have an M6 5.7 LS1 in an Australian car (late 70's). The engine is standard internally with new plugs, leads and injectors. The intake is the factory intake pipe, MAF and aftermarket...