I have tried to correct my speedo i tried corecting my "vss tire revs per"
to what I thought the tire manufacture specs wre but did not work my speedo is of 5-6 mph cause of tire size, am i missing something ?

I have tried to correct my speedo i tried corecting my "vss tire revs per"
to what I thought the tire manufacture specs wre but did not work my speedo is of 5-6 mph cause of tire size, am i missing something ?


find out what you're reading on the speedo and divide it by what the real mph is. For example, your speedo reads 60 but you're actually going 65.......... 60 divided by 65 = .923 Take your current tire revs per mile and multiply that number by .923 and enter the new number into the tune and re-load. Of course if you're reading higher than you are really going the principal is the same. Say reading 65 but only going 60. Take 65 divided by 60 = 1.083 and multiply the tires revs by that number.

Jody

I know the # i entered was correct 609 the problem I had is no matter what I set that # at the spedo would not change I also tried putting in a different gear ratio and still no change :confuzeld I do apriciate you chiming in !

I know the # i entered was correct 609 the problem I had is no matter what I set that # at the spedo would not change I also tried putting in a different gear ratio and still no change :confuzeld I do apriciate you chiming in !


I have EFI Live, but have tuned HP Tuners in the past. I do not know, but on EFI Live you have speedo tables in the ecm and in the trans (tcm). The ones in the trans "appear" to have no affect, as far as speedo stuff. They do work on the trans shifting stuff. But changing gears, revs, etc. doesn't change my speedo, UNLESS I make the changes in the ecm.

No idea if HP Tuners is set up the same, just thought I'd throw it out.

Jody

I have EFI Live, but have tuned HP Tuners in the past. I do not know, but on EFI Live you have speedo tables in the ecm and in the trans (tcm). The ones in the trans "appear" to have no affect, as far as speedo stuff. They do work on the trans shifting stuff. But changing gears, revs, etc. doesn't change my speedo, UNLESS I make the changes in the ecm.

No idea if HP Tuners is set up the same, just thought I'd throw it out.

Jody


I just run with the stock tires right now, but on the LBZ models we do not have a spot in the trans for anything yet. Does the lb7 have a spot in the trans for speedo table?

I have a tab on the far right of the tab bar that says spedo and has a picture of a spedometer inthat tab it has the general vss pulses per, and the vss tire revs per, and has a sub tab for the top speed gov. ?

I have a tab on the far right of the tab bar that says spedo and has a picture of a spedometer inthat tab it has the general vss pulses per, and the vss tire revs per, and has a sub tab for the top speed gov. ?

is this in the engine computer or trans computer?

it does not specify its in its own tab neither engine or trans tab

Im working on making some demo's for just this stuff guys, I'll hopefully have something up next week for everyone.

I think that would be great ! any sug. for problem @ hand ?

contacting support at hptuners.com with your .hpl file and a full description of the issue would be your best bet so if I have a problem answering it I at least have the info to be able to forward to the powers that can.

-Bill

I have a tab on the far right of the tab bar that says spedo and has a picture of a spedometer inthat tab it has the general vss pulses per, and the vss tire revs per, and has a sub tab for the top speed gov. ?


Yeap, that is what mine looks like too.

thanks for the help every body i'll contact support but its kinda soundin like it im sol but hopefully they got a secret

http://www.thetuningdoctor.com/HPTuners/Live%20Screen%20Recordings/Geartire%20size.xls

Didn't get around to making a demo to go along with it but the spreadsheet is pretty self explanatory so should get you by.