Thoughts on this DME scan?
#2
Rennlist Member
#3
Is this a car that you are considering buying? The driver appears to bounce off the rev limiter quite a lot for a car with relatively few miles. Fortunately there are no range 4 and higher incidences which are likely to do engine damage, but nevertheless the car was certainly driven hard judging by the DME report.
#4
Poseur
Rennlist Member
Rennlist Member
I think the DME scan is worthless. Mine has some in the mid ranges (2 and 3) and I have never "bounced off the limiter." I just don't buy what they are supposedly telling us.
#5
Then someone else has. Did you buy the car from a Dealer's lot? Lots of guys beat the hell out of the car they test drive. The only other option would be the guys who service your car.
#6
Racer
I'm with Edgy, we have all driven are cars hard at some time. I know I have but I havn't "bounced it off the rev limiter either. In what hour did the Range 2 and 3 over-revs occur. I'd be more interested if it happened durring the break in period.
#7
Poseur
Rennlist Member
Rennlist Member
Trending Topics
#8
#9
Rennlist Member
#10
Baring a money shift or other forced mechanical over rev, I don't understand how the rev limiter would allow range 2 and above in the first place. What good is a rev limiter that allows excessive revs?
#11
Rennlist Member
My recent DME scan for comparison purposes: The result of about 6 or 7 rev-limiter hits on track was 2124 ignitions in range 1 and no ignitions in any other range. I was relieved.
The DME will record about 370 ignitions per second at 7400 rpm (middle of range 1).
The DME will record about 370 ignitions per second at 7400 rpm (middle of range 1).
#14
Rennlist Member
GHills: I agree that 7400 rpm is 123.333 rps, but thinking each of the 6 cylinders fired every 2 seconds (with 3 cylinders firing in one second), I multiplied 123.333 by 3 (cylinders firing) to get the 370 ignitions estimate. What's your thinking on the dividing by 2 part instead?