PPI just came back with the following results on a 2002 turbo with 96,000 Kilometres - should I be worried?

- FOUND MISSFIRE CODES FOR CYL #3+6.
- 1955 OPERATING HOURS. 41,942 IGNITION CYCLES
AT REDLINE (UNDER THROTTLE), 137 IGNITION
CYCLES OVER-REVS (MISSED SHIFTS)

Thanks for your help!

 

It needs plugs.

 

It sounds like a bad driver owns it and it needs coil packs.

 

depends on the price bro those are not bad

 

Thanks for responding, the Porshe performance shop who did the PPI mentioned that this car was driven extremely hard and that these numbers are some of the highest numbers they have ever seen on a PPI. I am just worried that this car was abused and have more wear and tear on the engine than whats normal.


What would be an appropriate amount of ignition cycles at redline and over-revs if these numbers are considered bad? Car is priced at $38K

Thanks

 

Thanks for your reply. What makes you say the previous driver was bad and what would coil packs have done?

Thanks

 

If the car is tuned it changes the redline and will show a ton of over revs - do you know if it is?

 

What is considered tuned? Just so I know what to look out for - Thanks

 

'Cause judging from the number ignitions at redline, sounds like dude used the limiter to remind him when to shift.

Look for more than .6 or .7bar of boost, that's usually a dead giveaway. Also, the DME has a value for "Number of programming operations." If this value is greater than 1 (the factory tune), then that's another strong hint - unless a dealership reflashed with a factory tune, which I'm guessing doesn't happen all that often.

For reference and whatever it's worth, I bought my car with 29,693 range 1 ignitions, and 323 range 2. The Porsche tech (very experienced guy) said no big deal, previous owner didn't "baby" the car, but by no means did he abuse it either - as evidenced by every other item he inspected.

So my advice would be to look at the complete picture instead of just one aspect.

-V

 

I'm pretty sure there is a difference between type-1 and type-2 overrevs. I think type 1 is bouncing off the limiter, and type 2 is surpassing the limiter.

While I don't think its good to bounce off the limiter every shift, 130 times touching the limiter doesn't sound bad to me... Type 2 overrevs is the one that needs to be looked for IMO.

 

Type 2 would be downshifting into 2nd when you meant to catch 4th.

Type 1 is hitting the rev limited before you shift.

 

There are many threads on this, you can log Type 2's with a tune where the rev limiter has been raised, and I'm not referring to a downshift scenario, which is certainly is ONE way.

 

^ +1

... only to add, not all tunes raise the rev limit as suggested upthread.

 

Is it 180 cycles per second? If so, this engine has run at the rev limiter for 233 seconds?