Knock when coming into boost

[joecar]

Maybe this will help (requires careful reading to see the interactions among tables), see post #4 here: Summary-Notes

[joecar]

I would log GM.EQIVRATIO rather than GM.AFR... I've have seen GM.AFR miss a few squiggles compared to GM.EQIVRATIO.

[barbermi]

Thats how I do it too darcy, makes for a better transition of fueling into boost.
Post up your latest tune file so we can take a peek.
Once the fueling is better dialed in, if your still seeing knock in the logs, you can try some race gas or octane booster, if knock is still present it is likely false knock from other sources and can be ignored.
Your main timing table needs some work too big a veriation from cell too cell.


What is your turbo setup ?

If single turbo don't bother trying to put it back into closed loop when tuned, and for that matter even with twins unless its a road car and your concerned about fuel economy I would leave it perminantly open loop.

Its not actually my car its ttls1's car. Its a twin turbo lq4

[Rich Z]

Maybe this will help (requires careful reading to see the interactions among tables), see post #4 here: Summary-Notes

Wow! Lots of GOOD stuff in that referenced thread!

[ttls1]

That's a good read cheers joecar.

I also found this post from you in September post #2

If I planned on running OL all of the time would this setup be fine? Provided we can get PE enabled in OL.


http://forum.efilive.com/showthread....wer+enrichment

[joecar]

That's a good read cheers joecar.

I also found this post from you in September post #2

If I planned on running OL all of the time would this setup be fine? Provided we can get PE enabled in OL.


http://forum.efilive.com/showthread....wer+enrichment

Yes, this is what some tuners have been doing, it gives easier conrol of fueling throughout the MAP range

( setting OLFA B3647 to provide sub-boost fueling upto 105kPa, and PE B3618 to provide boost fueling by setting B3613 to 110kPa (and making sure PE enables ).

[barbermi]

Seems like the easiest way to set it up for sure. Thanks joecar.

[barbermi]

Bit of feedback for you all.
The knock when coming on boost was due to gear shifts. Bogus knock!
We have got the PE working correctly thanks to joecar. Until you mentioned we werent aware the tune will always run the richer AFR. Now all RPM's are set to 11.3 in the PE modifier and we have got the BEN factor nearly spot on when in boost.
We have set the commanded fuel back to 1 in the cells that were .99's and the STFT's are working. LTFT's are yet to learn and function. DFCO works a treat! Next step is start adding spark and see how it goes down the 1/4 mile!

Thanks for everyones input.

[Boost]

Thanks for the update!