Tampa 928s

I am putting my Ecu's back in and had already connected my low octane loop wire green, on the LZK. Now I noticed a brown wire on the LH that has a connector also. Does this also need to be connected if not what is it?

PorKen

That's the LH octane loop. It is wired on the board, but it doesn't seem to do anything.

I connected it on the dyno, and it made no change in the A/F ratio. That's at WOT, so it might do something in cruise, but I kinda doubt it.

John Speake is too lazy to look for the programming.

Tampa 928s

Another mystery in the 928 world!

John Speake

Hey ! You just woke me up !

Tampa 928s

John I sent you the LH last week look for it, so the mystery surrounding the brown wire is what?

John Speake

What it does, which appears very little. Best guess so far is that it offsets the O2 loop slightly to enrichen mixture......

I'll let you know when I receive the LH2.2 ECU from you. Tim's ST is on it's way to me.

WallyP

"I am putting my Ecu's back in and had already connected my low octane loop wire green, on the LZK."

Why?

Tampa 928s

Wally

I just added a S/C put the stock chips back in and waiting on my Shark Tuning from Tim. I wanted to be cautious on the timing side until this is done.

Tampa 928s

Wally

Does anyone have a TB bushing for sale mine is is blowing out air when pressure tested. Some blow by is ok but this seems a little excessive.