Quote:
Originally Posted by ScottyFerrari
Just had the used CS I am looking at check at the dealer. I don't have all of the numbers, but there were maybe 380 hits in range 3 and 200 hits in range 4 (plus, of course, more in the lower ranges). The dealer I spoke with (who won't be the servicing dealer) said as long as there aren't any hits in ranges 5 and 6, no problem in terms of engine warranty. Previous posts on this board suggest differently.
Comments?
Thanks--Scott
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You should talk to
PCA-TECH about this (first off he can clear those for you so that your ECU would be clear).
As I understand it, Porsche only raises warranty objections for the top two tiers unless there is some other obvious sign of abuse. Nearly all cars will have over-revs in ranges 1 and 2 if the owner has ever bumped the rev limiter, some may even have range 3 over revs. Of course the amount of time the engine spent in that stage is also important. I'm pretty sure these are engine revolutions, so a car with 200 revolutions in range 4 probably means it missed a single downshift as an engine turning 7800rpms would be turning what 130 rotations per second so it spent 1-1/2 seconds in that range. Is that enough to do engine damage? Likely not. Our engines will take punishment up to almost 8500 rpm on a fairly regular basis, certainly more than 1-1/2 seconds worth of missed shift. The ECU also records when this happens in terms of total hours of engine life so you can sometimes backtrack to a specific event that caused it by zeroing in on when it occured.
I'm willing to bet that nearly everyone here has over revs in some range, some higher than others. The question comes down to warranty. Is the dealer raising any warranty issues over these over-revs? If not, then you should be fine and as I said you can clear them out of your ECU and "feel" better about it if you want.
BTW the 380 revolutions in stage 3 were likely from the same event and recorded those revolutions on the way up and the way down, again a few seconds worth of time in that range and I doubt anything to be concerned about.