Need to run a test with the newest scanner if you have access please email support at hptuners.com
Need to run a test with the newest scanner if you have access please email support at hptuners.com
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
Sent to email support.
I have one sitting in my shop. Crank pulley wobble from hell. LOLOriginally Posted by Bill@HPTuners
Need to run a test with the newest scanner if you have access please email support at hptuners.com
I got 93 vettes on my lot if i can help.
Have you ever compared what the interface is logging for speed through the VCM scanner and the tacho?
Mine (european model) shows some difference (VCM scanner shows about 10% less the speed i read on the tacho).
I log km/h...
@ingsteve: if it is a true European model or an imported US model which has an Euro instrument cluster then the speedo advance is a EU legislation (law) requirement. All GM cars have a 7% speedo advance built into the Euro instrument cluster and it can not be changed. This got nothing to do with HPtuner or the PCM although you can fool the cluster if you reduce VCM output by 7%. But, it'll also slows down Odometer and plays with fuel consumption numbers of course.
5litreater aka Bill has an 05 m6 vette, PM him.
He was actually the first person I emailed, over the years I've gotten to know our customer base pretty well, from them either yelling at me to fix something or befriending them
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
This is a good assumption....yes it is a true european model (not imported)...so it should mean that the 7% more on speed signal is done directly by the Euro instrument cluster and not by the PCM for which the same output value is equal between USA or European version....
So HPTuners should log the raw PCM speed signal and the tacho should plot the same signal increased by about 7%...
We need to make sure this is in line with what you are saying...do you have the same problem with your corvette?
Last edited by ingsteve; 01-31-2013 at 03:32 AM.
that is not a problem per say, it is a legal requirement !
and yes that problem exists with EVERY Euro specced car, not just Corvette. From Ferrari/Fiat to Audi and so on, all must have that advance. Only US instrument clusters show correct speed. HPTuners always logs the true uncorrected speed in the PCM.
Install an US instrument cluster and you'll see actual speed with no advance
PS.: I am only working on Corvettes.....
Thanks for the heads up ccrp
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
I have done an extensive test this weekend by a elm327 bluetooth obd interface and Torque software for android device.
I can confirm the speed readings are matching with hptuner values and are lower than what shows the tacho/hud.
This means definitly it is the european tacho system that increase the ecu signal.
Is there any way to recalibrate the tacho by hptuners?
If the speed actually is greater than 7% (i will check with a gps for accuracy) then also the total km should be greater than the real ones...
no total km are correct ! that's the reason why it is done in the cluster and not the PCM.
if you fool your tacho to show correct then your total will become off. It is trade off, but your total km will show 7% less then
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