Hi everyone,

I could use some help with a DME report. 2007 997tt, 6MT, 30k miles.

Range1: 12424
Range 2: 2406
Range 3: 554
Range 4: 87
Range 5: 1
Range 6: 0

A tech who used to work for Porsche stopped the PPI and recommends I not to buy this car. No other evaluation or tests done.

His reasoning: Porsche will not honor CPO/warranty if there are any Range 5 or 6 over revs. Claims any range 5/6 may be cause for future engine failure. At first I passed on the car, now I'm having second thoughts.

Do you agree or disagree? Has anyone bought a 997tt with single digits over revs in range 5/6 without having their motor grenade on them?

Any helpful insight much appreciated.

 

I purchased a 07 997TT in November of 2013 with 2 in range 5 and 1 in range 6, both were >500 hours prior to the current time. Dealer gave me a 2 year CPO on the car, which I have used a few times with no issue..

 

I asked about this as well. A reputable Porsche shop in my area says that any range 5 or 6 after 300-400 hours is fine. They say, any engine issue will happens right away.

 

It would be helpful if you knew when (operating hours) those over-revs occurred. Also, with that many low range over-revs it might signal that the car has an aftermarket tune and therefore has a slightly increased redline.

997.1TT I purchased recently had an "aggressive" DME report for sure. However, the concerning over-revs happened long ago so I am pretty confident the motor is still healthy. I also had a TON of range 1 and 2s..pretty much maxed.

If you are looking for a CPO car, then yes, run away. However, if you are comfortable with a car that won't be CPO'd, just get a full pre-purchase inspection if the car checks all your other boxes.

 

^ This. DME reports should show the hours per range as well. This is just as important as the range numbers. This is more for warranty than anything else. After talking to professional Porsche mechanics, they say the hours shown after each range of last log tells a bigger story than the range count

They see overrevs all the time but not one they have worked on had signs of issues. Anything that's reads >300 hrs is safe

 

Good idea, thanks! I'm going to see if I get the hours per range.

Been scoping out various articles tonight. Aside from 1 article (http://www.911virgin.com/porsche/rev-range-information/) on the 996tt that had recent range 2 ignition (within last 3 operating hours) that had eventual engine rebuild, I can't find anything on the 997tt (aside from internet hearsay) of range 5/6 leading to engine failure.

 

Really easy answer - pass. You'll find what you want soon enough.

 

Here is a copy of the DME from the car I purchased in early August. Per the Porsche dealer that ran the scan "This car was driven the way it was meant to be driven". LOL

Of course, I wasn't looking for CPO certification or anything like that. The range 5 and 6 almost seem eroneous or so short that they don't mean anything. While I don't like the heavy range 1-2, moderate 3, and light 4, I attribute the 1-2s as due to the ECU tune and the 3 and 4 over revs happened long enough ago to hopefully have manifested themselves by now.

Also, look at the number of programming operations on your DME report. Mine says 2..which is a little surprising considering I know that after stock, the car had an EVOMS tune at one point and then switched to GIAC. So, I thought it would read 3. Oh well.

 

I’m pretty sure the car is fine. Folks get too paranoid; half of them don'teven know where the oil goes.

One freaking over-revved is not the end of the day. If the car runs fine,feels strong don’t smoke (start up/decal/acceleration) and don’t leak oil andso on, then go for it. I mean, someone would have to literally rev the car toredline and stand on it for a long time, allowing for valve float to create anissue. You mean to tell me that Porsche built this strong engine MK1 that can'thandle a couple of over revs? There is a lot more safety net within theinternals of these engines than people give credit to.

Hope this helps

 

Only thing to add is that some smoking upon startup is supposedly normal in certain circumstances. I get it every now and then. Has to do with oil sitting in the horizontal cylinders but should go away within a few seconds after starting.