IAT loom

[Gelf VXR]

Where can I get an extension loom for the IAT sensor, for when the MAF is isolated when VE tuning in EfiLive?

[stigmundfreud]

is yours the 5 pin MAF connection then?

[ringram]

You can leave the MAF in place and just set the MAF fail freq DTC processor. Unless you want to lob it out totally..

[stigmundfreud]

ringram said:

You can leave the MAF in place and just set the MAF fail freq DTC processor. Unless you want to lob it out totally..

thats what I did but that only works if you have the 3 pin connector according to the docs?

With the hassle of getting idle in SD I'm going to revert back to CL with MAF eventually.

Actually Richard whilst you are on, posted this ? on the forum last night but if you can help it will help gelf too.

I had my bens pretty much spot on (OK not all +/- 0.1) but close - so I tested in CLSD. LTFT now goes to -12% and the car has gone from the commanded/close actual AFR to now running leaner. Do I need to run it longer for them to come into line or do I need to go back into OLSD to nail the bens? Can I actually use the BENS from the closed loop logs or do you have to revert to OLSD to do that?

[ringram]

BENs in closed loop are useless.
Also you need to turn off COTS, DFCO, Lean Cruise etc to get best results when generating BENs
Also where are your LTFT's -12%? the trim cells are cut up over the operating range. You can make a map to see which area has the largest trims and that will tell you where to concentrate. Also check which bank says that and make sure its similar bank to bank as in closed loop they are fuelled differently. Open loop both banks are fuelled the same.
Some guys swap WB to the other side to check. Leaks in the exhaust etc will throw things out. Probably changes over 10% in VE suggest something is a bit fishy somewhere. Did your changes make any positive difference?

[Gelf VXR]

ringram said:

You can leave the MAF in place and just set the MAF fail freq DTC processor. Unless you want to lob it out totally..

Will the MAF if fitted have a n effect on VE? i would have thought there would be some impact. Then again i want a base line for the stock set up to be able to gaugue the effects of any mods further down the line?

[Gelf VXR]

stigmundfreud said:

is yours the 5 pin MAF connection then?

Yes the IAT is in the MAF housing

[ringram]

Yes it will have an effect likely very minor/negligable if your car is stock and its an 85mm maf.

[stigmundfreud]

figured as much re bens - gone back to my OL tune as I found I had accidentally pasted the ben figures in twice which skewed the VE - ooopsy.

It was cutting out at idle a lot this morning so reverted it all back to OL with the last good tune and redone the bens - trip to Manchester tomorrow will provide enough logging to get it there.

Fast coming to the thought of running OLSD all the time then if it fails on MOT (not that it should I'll ensure it is tuned for 14.7 at the test ranges ) I'll just go CL for a few days prior.

[ringram]

.. or semi open loop at the test location of normal idle and 3000rpm and full open everywhere else.
You need OS3 or 5 for that.

[stigmundfreud]

I'm planning on going back to OS3 once I've gotten everything sorted - as you say thats a nice feature is that table in OS3

[stigmundfreud]

http://forum.efilive.com/showthread.php?t=5459&amp...

gelf that thread seems to suggest you can leave the maf in place but just edit b5001 to force it to fail over

[Gelf VXR]

stigmundfreud said:

http://forum.efilive.com/showthread.php?t=5459&amp...

gelf that thread seems to suggest you can leave the maf in place but just edit b5001 to force it to fail over

Ok thanks, I think ringram pointed me in that direction also