Tune Chevy Camaro with Aussie $12P, NVRAM, & Comms

[Holden202T]

also just looking at your log, whats the go with the desired idle rpm, it keeps going to 0 and back up every now and then!

not sure if that behaviour is something corrupt or not but i've looked at other $12P logs of my cars and the desired idle never drops like that it only changes rpm readings depending on cold engine and stuff like that.

[redcamaro]

... I'd like to get some feedback on the attached xdl log file?

Bump...
--
The engine isn'tt started until about 2 minutes in, and driving starts at about 3-3.5 minutes in.

[Holden202T]

??? theres two comments from me ?

[redcamaro]

also just looking at your log, whats the go with the desired idle rpm, it keeps going to 0 and back up every now and then!

probably before start, and when i turned the engine off (at the shop).

[redcamaro]

something is seriously wrong here, you should set the timing in diagnostic mode (on the balancer) to the same as the reference angle defined in the tune .... if its not running right at this point then maybe worth checking that the mark on the balancer is accurate ....

Thanks Holden202, I'll check it against the old balancer, and also take #1 plug out for TDC at 0 degrees.

Anyone got thoughts on injector duty cycle being 2-3%?

[charlay86]

I agree with Holden202, something weird going on with the desired idle, rpm goes down to zero and back even when the engine is running & you are driving.
The injector duty cycle looks fine to me, goes up to about 47% at 5:30, it generally seems to follow the trend of engine rpm & tps / map

[Holden202T]

desired idle, is the top monitor, aqua line.

desired idle weird.jpg (131.44 KiB) Viewed 5544 times

[Holden202T]

also on further investigation of the logs, it appears everytime you give it a boot full its going LEAN as ...

i suggest one of the following:

1. tune is screwed
2. o2 sensor is screwed
3. fuel pump is not supplying enough fuel.

can you upload your current bin file please ?

[redcamaro]

[/quote]

1. tune is screwed

totally agree .., & appreciating your feedback

2. o2 sensor is screwed

I have a wideband with LC-1, I'll install it.

3. fuel pump is not supplying enough fuel.

I'll up the pressure on the regulator.

can you upload your current bin file please ?

Attached...

I'll go and check the balancer, & TDC now. Might get to install the wideband too.

[Holden202T]

ok well your tune doesn't look to have any issues with it but from what you've said previously about your injectors then the injector rate might be wrong, you've changed it to .120, i would have left it at the stock .147 that the BLCF has ..... this may be playing a part in it being so lean at WOT. you've also said fuel pressure was 43psi, i'd leave that as it is, should be fine.

i'd try changing the injector rate back to .147 and adjust the idle ve's to get it idling without being too rich etc, then see what happens at higher throttle openings.

also definately get the wideband on there just to be 100% sure on whats happening, last thing you want to do is a WOT run lean and burn something!

yes also agree get the timing confirmed to be on 10 degrees in diagnostic mode!