Whatever happens to be on there. The tune is just programming. When you use your tuner, you are over writing whatever happens to be in there at the moment. (electronically erasable programmable read only memory. or EEPROM) Just disconnecting the battery for a few minutes won't change that.

 

Whatever tune you load up is now your stock tune. So even if you disconnect your battery for 10 years, when you connect it again your sct tune will still be on there.

 

That's what I was hoping. This is the fiorst vehicle that I have ever messed with computer.

Thanks.

 

Same here. I asked SCT that question a couple months back. That's why I know.

 

Didn't get to check IAC this evening. Backed up on ramps to change rear shocks (before I forget - I changed the front ones 2 weeks ago) and clean and put up tools from this weekends work to keep from getting too much junk in the way. Pulled IAC from original TB and cleaned. Will swap it tomorrow. Had to quit early for trick-or-treaters. Other than fast idle, truck runs so smooth, I almost hate to mess with anything!

 

Iac should be the problem if not look on passenger side vac line , its plastic and I broke mine

 

That plastic line was difficult to get back into fitting. I may pull it back out and soap it up and push it back in. You talking about the 1/8" or so sized tubing?

 

Got it fixed. IAC from original TB lets it idle at 680 rpm. Seems other IAC waould not stroke all the way to 0 and step back out just enough for correct idle.

 

Awesome.

 

Sweet !