[LAF]

Well having to have my PCM replaced for the 5200 RPM stumble(on my word over the phone) , I ripped my S1 PCM out, put the OEM PCM back in. Took it to Dealer, he replaced my stock with new and off I went. Well........almost , yeah the pinion program got him, resolved in about 2 blocks and 10 mins.

So my brother takes his S1 down to have it flashed on Thursday last week and I have him ask, "Do we have to do a quick learn when we disconnect power"? Well Flight System did not know. Was never asked befor?

The new stock PCM ran REAL nice compared to other, even with the over sized S1 Injectors.

Well I re-installed S1 PCM and tried to run it as is for about a week now(less Sportster days) and I was not happy. Well today took off the Neg. side( why Neg by the way, less chance of arc?) let it sit for 20 mins, fired it up, heat cycled the car as per S1 instructions, and did a quick learn over. PITA! but I have to say it made it crisper in the WOT and shifts.

3BAR can you help on this? Is tranny info stored RAM or ROM, as no back up battery, I assume (hate that word) that flash is held but are "learned" driving patterns retained as well?

Thanks to any and all thoughts on this.

I mean a battery could go and then do, or dont we.....................