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Chris, that sounds like a timing issue. You still run the LT1 motor in that car? Why I'm asking, see if you can get a timing light on it to see what the timing is doing, but I know with the Lt1, they don't have a pointer.

Spitting thru thur TB could also mean a lean condition. So Ricky, are you saying while crusing at 2000 you are getting a 15 to 20 percent o2 correction?

I'll just throw this out here, not sure if it will help, have you tried changing the Start IAC Position in the FAST? Maybe raising the start IAC postion will help with the cold idle issue.

Ricky have you tried changing or checking timing when this happens? Just throwin out a idea here, those numbers in your fuel map seem mighty big for that area of the map.

Hey Ricky, sounds like we both have the same laptop, mine is a 133 with 48 megs too, so maybe it is the problem, I think I will borrow a friends and see if this will cure it. I've just never seen it say Block Read Failed before, usually it will just lose sync.

I got this communication error today while running the car. Car is idling, starts running real bad, losses communication and I get this error message. While I have been getting alot of communication errors lately, I have never seen this one. Usually, it will just lose communication, but here...

Thanks Craig for the reply. I've have read that, what I was wondering the higher the number in the dMap, the less sensitive the MAP?

Got a question about the map parameters, what does the dMap Noise Threshold exactly do? If I raise this number, does it make the map reading less sensitive? What I'm wondering, I have very low vacuum at idle due to cam choice, and the car is really rich, would changing this setting help with...

Just looked on my PC here, it is version 1.005, so I guess that's the latest version.

Craig, the disk I have here in front of me is version 1.0, copyright 2001. Is this the latest, or am I behind time. Thanks for the help.

Having a weird problem happening, here go's. Car idling, laptop connected, editing any table, car will start to run bad just for a second or two, then I will loose connection, will pop up on the screen sync lost. Seems like it is getting worse, like it is happening more and more. Sometimes it...

Well looks like I got it fixed, the Holley throttle body I run doesn't have what I call an IAC bleed hole in it, so I drilled a hole like the Factory throttle bodies have, and idles well now. Thanks all for the help.

The harness I use is the FAST harness, it uses an adapter to hook up the IAC, goes from square plug to flat plug. I believe it is wired correctly, reason behind that is because last year I ran it this way, and it worked fine. Only thing I have changed is the camshaft and headers from last year...

Hey Bob, thanks for the reply. I'll try to explain a little better. When I turn the throttle screw all the way in, or open the throttle blades, this is when the car will idle. If I back off the screw, or close the throttle blades, the car will not idle, the idle speed is to low. When I do this...

Running in closed loop idle presently, may have to try open loop. AE fuel vs map is zeroed out right now, so no enrichment from that at idle.

I'll try to explain this the best I can. Having a hard time getting the idle down with my new camshaft. This cam has alot of duration and very little idle vacuum, about 6 inches. Anyhow, the only way I can get it to idle is run the throttle stop screw all the way out, actually opening the...

Thanks for the replies, Craig can you tell me what tables I need to tune for AlphaN, the FAST instructions aren't real clear on this, just want to be sure.

Well, installed a new camshaft, and I was pretty sure I would need to run AlphaN, sure enough, not much vacuum at idle, about 5 to 7 inches of vacuum, so I switched my parameters to run AlphaN, but the car won't run real well. Now I know I have to make some changes, but where should I start with...

Craig, I like your last reply. My car will be Bracket Raced, that's it only sole purpose. Being consistent is what I'm looking for. Last season it was fairly consistent, but weather did affect the car. Hmmmm, AlphaN in open loop, something to look at.

Thanks everyone for your thoughts, now one more question, do you still get Wideband O2 correction while running in AlphaN?