porschechondriac

Ran a rev report on my car and here are the results. What's odd is that the operating hours show 154.9 which is obviously not correct. Is the data type limited to 4 digits to the left of the decimal point?

nosnow

I am probably wrong but I think it is operating hours since last event.

Petza914

Something is weird there. The total operating hours is a cumulative number. It should be at least as high as that in the last recorded overrev, so if you just hit refine then pulled the DME log it should have a value of 2444.

What tool did you use to pull it? How long have you owned the car?

porschechondriac

I used a Durametric Pro. More about the car, it's a 2008 base which I've owned for almost 2 years. It's a very high mileage example with 160K on the clock of which I put about 6k on. Gonna check it again later to see if I can get an accurate measure of the total operating hours.

C4SDayton

Go redline once then recheck

ttreat

That's a fast car! Average of 1,038 mph.

Mike Murphy

porschechondriac

She's still showing about the same. I'm gonna assume there's something wrong with the electronic Hobbs meter in the ECU. Ticket closed.

Petza914

Any chance the car got a new DME at some point prior to you owning it or has a tune?

My RUF Supercharged car has a DME from a TT in order for RUF to have access to parameters it needed for tuning the car with forces induction even though it started life as a C2S. When I pull my DME report, I have the opposite issue where it looks like the car should have 300,000 miles on it because it added the data from the TT DME and since then has also been double counting the hours from the piggyback DME and the stock DME. It also carried over the overrevs from the TT DME, which that guy with that donor car must have driven hard. The other anomaly is I have overrevs logged in what would be the future since the operating hour mark where they occurred is actually lower than the total operating hours logged.

porschechondriac

Interesting, that is a super cool hack! I'm pretty sure this is car does not have a tune. Does your DME report show your original VIN or the one from the TT? My VIN is consistent throughout all my docs and what's on the car.

Petza914

Good question - it actually shows my VIN (same one on the windshield, title and build sticker). Here's what I'm talking about though. The range 1 & 2 overrevs (5,621.4 hours) would be occurring 241.7 hours in the future of the total operating hours (5,579.1). The car is fast, but not fast enough to teleport me to the future LOL. Since the DME data is corrupted, I haven't bothered to pull another report since this one back in November of 2013, but it might be interesting to do so, just to see how it has changed.

For most cars, if you divide the mileage by the total operating hours, you can calculate average speed, which is usually somewhere in the 40 something MPH range. I'm at about 55,000 miles so 55,000 miles / 5,579.1 TOH = 9.86 MPH - (guess I only drive it in parades) or going the other way with an average of 45 MPH and 5,579.1 TOH means the odometer should read 251,059 miles - that's a lot of miles on an 05 with the original large IMS bearing and a forced induction motor. Must be some great oil I'm using.

Petrol_Nerd

So, I've run into a similar issue with a vehicle I am looking at purchasing. How can any event, over rev or otherwise, happen in the future, at higher then total operating hours? Makes me suspicious and uncomfortable buying. Thoughts?

over revs reported at 6156.6 hours, but total operating of 5471.7
997.1 2005, 137 k kilometres.

Thanks in advance!

Ale-Superbike

So how do you explain, that the total hours are less ?

Petrol_Nerd

I can’t and nobody seems to be able to, ther than a couple techs said maybe it’s been rolled back and the hacker did not erase the memory of the overrev module.