Me too...

Didja check to make sure the throttle wasn't sticking open some ?

I went out this A.M. and set the timing on mine, as I was having a wee touch of ping when racing a co-worker in his Honda on public roads the other day. (he won, surprised?)

It gave me a chance to play a couple "what-ifs" out.

Hooked up the light, stone cold motor, on the fast idle still. 14* BTDC . Didn't un-hook or plug anything.

Pushed the throttle a bit, and watched the jump when the TPS opened.

Plugged the line to the canister, no change.

Let it warm fully, no change.

Unhooked light, drove about 2 miles. Hooked light back up, no change.

Plugged canister line again, still no change on hot engine.

Reset timing to 11* BTDC, ( a little margin for E85 petrol ).

I tell you all this just to re-assure that it seems difficult to set the timing wrongly. It appears that even if you set it on a stone cold engine, without plugging the canister line, it should still be correct.

The only thing that seems as though it would make a difference is when the ECM sees the TPS go "off idle" (open). That's why I'm wondering if the TPS is acting up. It _IS_ possible for that switch to be intermittent. MINE WAS, but on the WOT side. If the contacts get dirty, you could be making contact one time, and not the next. I wrote a thread a while back about opening it and cleaning the contacts. If you are down to your last straw, and wanna try it, let me know if you can't find the post. I think it's under "Throttle Body clean-up" or somesuch title.

But first, make sure that throttle ain't binding on ya. If you look at the TB, you see there is a primary and a secondary plate. They open progressively, the primary opens first, until about a quarter throttle, then the secondary opens. There's an L shaped bracket sticking up, off the end of the shaft that controls the secondary. Mine sometimes sticks. Check it out carefully, and hit all the pivots and stuff with some light oil.