When I installed my tune some time ago, Todd K thought by raising the rev limiter it would not record overrevs. I believe my limter was raised to 9999 or something ridiculous like that yet overrevs were still being recorded which came as a surprise to him. I can't speak for Scott and whether his tunes back then also had this 'bug'. Nevertheless there was a very heated thread about detecting flashes/warranty issues in which the issue of overrevs came up. At that time, it was mentioned that if you reinstalled the original tune via Softronic flash client then the overrevs would disappear. This did not work for me but I had a Proto tune (not sure if that mattered). Scott mentioned that he had a tool that could clear overrevs. In any event, I didn't pursue it further since I really didn't care. It seems like there has been some progress since then in fixing this 'bug'. If you do a 60-130 in 4th, then you will be in overrev territory whether it records it or not. I don't know if there is a law about tampering with overrevs like your odometer but it is an ethical question.

 

Yes, i ended up reading that thread page to page. It appeared there was a line of thought by certain members (a struggle if you will) that one could rely upon the strength of the engine by over revving it indefinitely during poorly guessed downshifts without any consequences. And, that cars with these countless over revs were safe purchases . Funny because at the Porsche schools some years back it was clearly explained and demonstrated that the purpose of the brakes is to slow the car into the corner, not the engine. But thats another topic for another day......

 

I've read a few posts as well as one PM in the past where a used car was scanned after the purchase only to find a wiped out result . The odd part with one of them was that even the hours were wiped . Needless to say the new owner was not happy but they did say that the car ran fine .
Keep in mind that those cars were stock.

With the Turbo that has been tuned .. in some cases the car is brought to an entirely new level . Most of the discussion on the topic have been with stock cars or modestly tuned cars but when all the internals are changed along with many of the crucial parts it's a different species. A car running 800+ HP may havea Porsche body shell along with the basic engine platform .. but is it really comparable in anyway to its original form ?

I don't know . So i'm here to read and learn.

 

Yes Dave, i was left with that understanding as well. It seems there is more work to be done but i'm looking forward to TK resolving this issue. Are you aware if he has made further inroads? You mention "progress"? I know your car is in his shop at the moment so perhaps he can use your ECU as a test mule in establishing a genuine fix .

And on that final point i agree it does becomes a question that involves ethics particularly when the user has knowingly exceeded the raised RL considerably on countless occassions yet has an option to remove any trace of negligent and incompetant driving at a later stage. That part i think is totally unethical.

 

Paul...
As I stated earlier,these ranges do not change.
So if you have a limit at 7300 and you hit it,you will get straight range 3 over revs....What Scott told me (that i wasnt aware of)is tha if you change just before limiter(7200) no overrevs will be recorded...You have to hit the raised rev limit to get overrev...but when you hit it,you get overrev ranges according to my rangelist above...

 

The 'progress' I was referring to was inferred from what Scott said. I don't know what TK has done on this, I suspect nothing since it probably is not a priority for him but that's pure speculation on my part. If I find out anything concrete I'll be sure to let you know.

 

So true. I can't imagine anyone with a build motor would care about overrevs. I'll probably get my motor built one day so I'm not all that concerned myself.

 

Aha! So just stay under the raised rev limit by a few rpm and all remains fine?

Is that how it works Scott? Can you please reclarify/confirm.

 

Tks Dave.

Makes sense. Once the internals have been upgraded certain mod options become legitimately safe/safer to impose upon the engine. Then range counter hits become a non issue to a certain degree.

 

Ok. To go over it one more time. Which counter does it start registering in? Does the raised rev limit means the number 1 range counter is still the first point of activation when the 7200 is hit or slightly breached? If not, which range counter registers the spike?

 

So modified code can only be read by piwis as being present if the tune file is loaded at the time piwis is checking the ECU correct? So if you flash it back to stock and the dealer checks your ecu with piwis all is undetectable?

 

This could go on for days so in a couple items:

Austin at Giac in his post also mentioned that they raise the Rev limiter and it wouldn't register unless hit. This is basically what I posted also as if it was at 7300 it wouldn't reg them until it was hit and then up to that range of 3 in this case. You could go to 7250 with no over revs yet at 7300 they will occur for what it had been raised to at that point. The set over rev would be the trigger. The cars also do not have just the 1 that most of us are talking about... They have several in the map.


Over revs are not a priority for built cars or ones with turbo kits etc. Would you build a car for 900HP and then worry about range 1 and 2 over revs? They are only a guide for the dealers warranty and how it is applied. The same style engine runs much higher in other applications and in race engines. Another post had also mentioned not to worry about them up to 3.

Softronic never resets over revs in any flash. While I can change or adjust them to any value I may like it is done by a different means and not for the general public. Any read or produced val in the DME can be altered.

Porsche has had updates to their software for reasons... Some have been for erroneous misfires that didn't happen, O2 sensor sensitivity, over revs showing as 1 in many ranges, fans that could an overload....and so on.

The PIWIS can check the CVN yet will not tell you if it is correct or not. You have to know what the correct number is to compare it,yet it can be found out to do so. The other item is Info 1 or Info 2 in a VAL report. The VAL has to be generated and then looked at. When the original file is in the car the CVN would be correct. Depending on the flashing method the CVN could change with or without the original file. This meaning it can show as changed with a Tuned or original re-installed if not done properly by Porsche's check. The Info1 and 2 show all 0's and can change when altered. The last would be the counter yet that is mostly worked around by all now.

The whole discussion narrows down to raising the rev limit or not. When raised to 7300 in this case you can get up to range 3 when hit. A stock engine can also get them from bouncing off of it. Should you not want it raised then do not get it... Then if you get some it would have been from you hitting the range. Many race car drivers always seem to come into the pits and insist they didn't over rev the car yet they did... Broken valves, torn Cup clutch etc. The last idea is do not bounce off of it or rev that high. Remember when cars didn't have a limiter and required the driver to use the Tach? This is a limiter with ranges that it monitors and nothing more.

The difference from myself and others is I actually produce the software and not just sell it. I have also been building engines/trans for racing and street for many years. All of which run their seasons without problems and win. I also worked at Champion for many years when there was only 4 of us doing all the work on the cars. I spend my time working on the cars and the software so I do not frequent the forums or have the time to post on them daily.

Should anyone have further questions they can contact me at 203-723-8928. You will have to leave a message and I will call you back.

Best Regards,
Scott

 

Thanks for the info Scott. This explains why I haven't had an increase in my range 1 and 2 overrevs despite having gone up to 7100rpm or so.

 

Thanks for all of your info Scott. It seems Skands account was correct afterall . Btw would you mind providing the formula to work out the ignitions/hrs? I'm intersted to know how many times the over revs have happened in each range and, at what mileage they occured. If i was in your time zone i'd give you a call and have a chat re what might have happened to my ECU when it was bricked. I'm still unconvinced i'm responsible for all those ignitions in range 3 and 4....although maybe it's not so many times at all once i figure out how to calculate the times.


Keep it under 7250 boggy!!.

 

great info..