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When at WOT the car will hit the rev limiter on the 2-3 shift. I have set the mph lower and also rpm set point lower. RPM is set to 5400 and speed is set to 55 mph. The car will hit the rev limiter...

Yes I did change the wheel speed for the engine but not the trans. I have done this on other 14plus trucks with no problem. I will check. Is there anything else it might be?

In tuning the 6.2l gmc at part thorttle the thottle blade is opening and closing rappidly. The truck has a lift and intake. In part thottle acceleration the throttle rapaidly open then close then...

Stock trans.

The trans shifts normal when crusing. The trans will shift to 2nd fine at wot. The trans just will not shift to 3rd at wot. I can manually shift the trans to third at wot with hp tuners. I have moved...

I just completed the install of the lbz intake and mp install. I went to reflash my pcm with hptuners to update the maf. I down load a LBZ file and was just going to cut the maf file from my it and...

I just bought a LBZ intake with mp to install on my lly. I need to recall my maf now. Is this done the same way gas motors are done? I have been tuning ls base motor for 10 plus years. This is my...

I had this happen to me one time before. It was my fuell filter clogged. Switch on and switch off the truck several times after you let it sit for about 5 minutes. Does take the truck for a test...

Thanks for your reply. I am going to try this tommorw.

chase

I just tried to tune my friends Camaro. I flashed the computer and took it down the road. We did part throttle tuning first then did wot. From a dig the car will shifted from 1st to 4th. I loaded the...

I just tried to load hptuners on my new computer which has a 64 bit os. My computer said it can't load bc hp tuners does not support the 64 bit os. Is there anything I can do to load this on my...

thanks email sent.

I down loaded the base file and made the changes to the file. Went to write the vcm and hptuners said the vcm prepare failed and would not write the vcm. What do i need to do so I can write the vcm. ...

I have a 07 llm. I need an economy tune for it. New to Diesel tuning. I have done a little tuning on lly's. When i look at this llm files it has a lot more tables. What would be some good change to...

I tried pulling the radio fuse. So far i have pulled the onstar, radio, radio amp, and brake controller. It will let me read the vcm the first time i try, but when i try to read it again it will not...

Thanks, I will try that when I get home
Chase

Thanks for the info on serial and appkey's.
I just tried my buddy's brand new hw lab top and the samething happened. It read the first time, but then i tried to read the vcm again and it loc b/c of...

No i do not.

When i try to read my 05 duramax i have a tcm read fail. I took screen shot of the read fail loc numbers. I have unpluged my brake controller and also took the onstar fuse out. what do i need to do...

What did you do to get it to connect. I have a 05 and i can't get my hptuners to connect.
Thanks,
Chase