Hi Everyone,

The softronic ECU Reflash raise 500rpm from stock rev limter.

So that's 7200rpm to 7700rpm

My understanding is that while it's reflash anything between 7200rpm to 7700rpm would not be recorded on the DME Scan record.

My question is how safe do you think it is to run the car at 500rpm higher than the original setup by Porsche? How can it be safe when other people are freakout with DME Scan which only have a few hit under Range 2-3 let alone 4,5,6.

Right now, the Rev limiter is set to 7200rpm, if you forget to shift in time, from say 1st to 2nd gear, the needle can easily up another 300rpm and ends at 7500rpm before dropping again.

So, it's safe to assume that at 7700rpm, it would now go as high as 8000rpm just because you forget to shift from 1st to 2nd.

That's Range 4 on a DME Scan where people believe to be the very dangeous zone.??


However, with the original DME Scan fig. of the following:

Range 1: 7300-7500 RPM
Range 2: 7500-7700 RPM
Range 3: 7700-7900 RPM
Range 4: 7900-8400 RPM
Range 5: 8400-9500 RPM
Range 6: 9500-11000 RPM

What's your opinions??

 

Funny because I've thought about this VERY same question before! I'm curious to hear some opinions.

Personally, I've always shifted at or before 7k when high up in the rev's. I can't imagine I'm missing another dimension of performance in that last 200rpm so I figure why risk it.

 

There isn't an issue IMO, the good news is that after 65,000 over revs, the counter stops totaling. It is a Porsche, if it can't take another 500 rpm, then there are bigger problems then a number on a DME scan.

 

The red line and rev limiter is set from the factory based upon a number of considerations. The obvious one is to prevent someone from (un)wittingly breaking their motor. From a more practical perspective, however, these points represent where maximum power and torque have been exhausted and there's no additional functional benefit to be derived from pushing ti further.

That changes when the ECU is flashed and hp and torque curves are altered.The additional 500 rpm permits taking advantage of the performance enhancements the tune delivers (modified air fuel mixture, timing changes, boost adjustments, etc.) without putting your motor directly in harm's way. This is validated to varying degrees by the testing reputable shops perform during their product development. Where that point exactly is probably varies from car to car and tune to tune and depends somewhat upon individual circumstance. Suffice it to say, an additional 500 rpm or so is very unlikely to have much of a negative effect on these robust motors. Most tuners take advantage of it and there are few, if any, reports about tuned motors blowing up as a result. They wouldn't stay in business very long if that were the case. It's also completely understandable too why Porsche would not feel it's their responsibility to perform warranty work on a product they didn't design.

Personally, if my motor ever lets go, I'll just get if fixed or replaced - parts is parts. Also, with respect to DME reports in general, while they are widely discussed in forums such as this, in the real world most P-car owners would probably give you a blank stare if you brought up the subject over adult beverages. When I traded my C4S in on a Turbo, the P-dealer did not run a scan before accepting it (so you can tell how much he cared) and told me I was the first person to request a over rev report before making a purchase. So it appears to me that there are likely only a relatively small number of potential owners (who frequent forums such as 6speed) who have even heard of a DME report, much less would know how to interpret one if it somehow fell into their lap. So, excepting that group, I doubt if even a bad report has any consequential effect on a vehicle's value or marketability. But that's just one guys opinion, of course. Best,