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Unless changing operating sytem or vin etc it is preferred to write cal only. Ive written cal only in several vehicles with no issues

Well I tried logging misfire and the only time it showed any was at the rev limiter so maybe were back to fueling?? Even though pressure is good even jumps to 58psi when attempting to powerbrake LOL...

Hello all, :hi:

Got tired of pulling my hair out and figured Id ask for some help. Ive got a 99 silverado that has been losing power for awhile. She used to rip the tires off but not anymore...

The only "TRUE" autotune function would be a real interface with your Dyno. Such as Mainlines ability to interface autronic, Motec etc.. with your dyno in order to actually plot MBT. A/F as an...

Just a thought but could this be a PE delay issue?? I believe there was an issue about zeroing ALL values in the PE delay zone??

I actually did make that mistake myself the first time. Sitting there wondering what the... then decided to try the whole connect thing.
So nothing personal just chuckling out loud as Ive been...

You wouldnt mind loading your tune to the repository would ya???

I have the same truck but have chosen to stay away from line pressures adjustments as I am not knowledgable enough in trannys yet. ...

Open scanner "Connect" and then click the little engine LOL

I had a similar problem with a tune from the repository as well No matter what it refused to relink VATS at all!
In my case the original was a newer OS 9379910 from Chevy and the one in the...

For some reason I thought you were insinuating that it wouldnt go into OL rather than just wouldnt run while in OL. My mistake.

Still that IAT may throw some things off for sure!

LTFT=Long Term Fuel Trim

WB=Wideband

I could have sworn I read that as a fix for a similar issue earlier and figured it was worth a try. why the insane IATs??

closed loop enable versus coolant temp table try changing that to 284 across the board. Maybe?? Then report back!

Are you sure you read this post?? I believe your answer exists inside!:doh:

Well then youve got the tools to tune it right!! LOL

Interesting as nothing came up when I searched tradenames etc.. That is my shops legal name LOL

the dyno in pic load bearing?? and do you have constant access to it??

Dynojets=inertia dynos tend to read higher and can be manipulated easily.

Mustang=load bearing dyno measures actual power output not just a calculation of how fast you spun a roller. Ideal...

Someone want to verify what actually disables these settings correctly please. I find it interesting that a sensor that doesnt exist is set factory to no error reported. By some ppls analysis the...

Figured it out I think,

http://tis2web.service.gm.com/tis2web/?target=ANT39FK39MF39&target.method=onSubmit&AIQ39ME39MN39=1&bm=_top#_top

Turns out if the RETARD hits the right button (Write entire) due to OS change DUH LOL Worked fine didnt want to relink though though eventually gave up and flashed original OS back on and all...

What I found odd is it was a file from the repository claimed to be from an identical truck????

Most parameters appeared to be the same so :shrug:

VE = Volumetric Efficiency

WVM/WVS Forums???

Im in Spokane WA if thats what ya meant.

Redline04 I have just reread the entire thread please DO NOT drive your car!!
Take some time to get a...

Have you purchased HPTuners??

If so just log into your customer account and its right there. If you havent purchased and interface I dont believe its accesible.

What gap are you running?? maybe spark blowout?? Try gapping a little tighter Maybe?!
FYI newer user just giving some thoughts.