Ck986

200 type 2 ignitions in a low mileage car with no tune? I turned down a car based on this as my thought is that it's due to poor shifting and the over revs may have stressed the internals of the motor. From what I am reading I am reconsidering this decision a little as it appears even up shifting may cause this. What do you guys think, am I over reacting. Plus the last one hasn't been for a few hundred hours. Otherwise it was a thing of beauty.

On the other hand my boxster had no type 2's, but 11k type 1's.

neanicu

200 in range 2 is nothing,I wouldn't worry about it.

Misplacedyankee

No way I would worry about that if all else checked out. Clearly you did a ppi?

BostonDuce

The factory has a new protocol for type 2 ignition events that essentially 'forgives' them for the purposes of the CPO coverage.

Provided enough time/mileage has elapsed (and the engine passes a leak down test IIRC), and no related issues have appeared for a specified time after the type 2 events, a car will be eligible for a CPO warranty.

While it may not apply directly to your case, it may ease your mind that according to PCNA, type 2 events do not automatically place a scarlet letter on your car's history as they have in the past.

BD

"02996ttx50

that might well be, but there isn't any cpo coverage still available on the 996 turbo's. they are beyond their cpo date for the purposes of warranty coverage. i went through this with a dealer when i was buying a car that also had roughly 200 type 2's. but i agree they no longer see them as significantly detrimental if the frequency of occurrence is *relatively* low. if they did, they would've had a lot of cars they couldn't cpo and sell lol.

of course the 97t has a bit more comprehensive measurement system vis a vis overrevs eg 123456 with 5 and 6 being in the "red zone" and porsche also certifies *some* 997t's that have 5's and 6's as long as they are few in number as well. presumably for the same reason they *certified* 96t's with type 2's. so they could sell the car lol

another way to think of type 2 overrevs happening when the ecu can log them at stock 6750 redline, is that many of us run our cars hit a raised redline at 7200 without issue, beyond the ecu logging more type 2''s these engines are very robust. 200 type two's is a non issue, near as i can tell.

jpflip

TT is a four stroke engine. We got three sparks per revolution. The type 2 is registered at 200 rpm above red line 6750+200=6950. If you take 6950 / 60= 115.83 revolution per second multiply by 3 = 347.5 sparks per second…. You had 200, this over rev was quick….I doubt a miss shift can produce a quick exceedance like that….And miss shift are the ones to stay away from…..

When I bought my car (2008) I didn't know about over revs type 1 or 2. But what a surprise when I saw the figure: 65535 type 1 which is the maximum the ECU can record!!! and 67 type 2 which was done at 1197 hour . The car has now over 1600 hours and the car is still strong!

cjaz

My experience leads to believe small amounts of type 2 are a non issue. I believe mine had 150 type 2's or so when i bought it. No tune and it had only 5k miles on it. nearly 30k miles later and there have been no issues, runs great. It seemed something to worry about to me until I understood how to calculate the amount of time it's actually spent in the overrev range.


chris