Fixing the EPA recall.
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From: Honolulu Hi
Fixing the EPA recall.
I got my 991.1 4S a little over a month ago, and during some hard driving it felt slower than my boxster and normal mode was downright anemic.
Dealer confirmed previous owner requested the EPA detune be performed. Did some GPS testing and even with launch control I was getting almost 5 sec 0-60 pulls (4.9). My Spyder was getting 4.1-4.3. I contacted softronic and got their ECU remap.
Holy hell this is a completely different car now. GPS 0-60 is puling down 3.9-4.0 consistently. I'm running 92 oct at basically sea level on flat ground. It pulls hard through the curve now. Feels better than my friends 991.1 S that never got the recall.
I 100% recommend doing this if for any reason your car got hit with the (optional) recall
Dealer confirmed previous owner requested the EPA detune be performed. Did some GPS testing and even with launch control I was getting almost 5 sec 0-60 pulls (4.9). My Spyder was getting 4.1-4.3. I contacted softronic and got their ECU remap.
Holy hell this is a completely different car now. GPS 0-60 is puling down 3.9-4.0 consistently. I'm running 92 oct at basically sea level on flat ground. It pulls hard through the curve now. Feels better than my friends 991.1 S that never got the recall.
I 100% recommend doing this if for any reason your car got hit with the (optional) recall
Last edited by Arione; Oct 23, 2024 at 01:41 PM.
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From: Honolulu Hi
Only thing I've changed is the ecu flash at this point. Dealer confirmed it changed PDK behavior as well as the ECU programming. They wanted to apply it to my 16 Spyder in the past. Given its manual, its more than just PDK shift points. If you leave it in normal and dont get on it you likely just never noticed.
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From: Des Moines, IA
I did my AMC0 update a long time ago and the only difference I could tell was the shift point change in Sport+ making it totally usable and truly great to use especially when enjoying a (very) spirited drives on curvy backroads. No negative impact. .
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From: Honolulu Hi
That's well and good, but in my timed 0-60 pulls, there is a stark different before and after the retune, and the AMC0 tune it had was almost a full second slower with launch control on the same tires on the same road and the same tank of gas.
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From: Pac NW
If you can prove that, you have cause to sue Porsche, as they emphasized VERY explicitly that performance would not be affected.
So bring data, collect $$$!
.... What? You don't have any data? Oh.
So bring data, collect $$$!
.... What? You don't have any data? Oh.
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From: Des Moines, IA
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From: Minnesota
+1 to the above. the conspiracy theory that porsche detuned the cars is just that -- a conspiracy theory. It isn't a dieselgate kind of change, despite the dozen or so people who provide "evidence" that it is. You can look at the documentation and see that engine tuning is only impacting sport+ mode. On the turbo variants, sport+ left the throttle plate open for improved transient response. On the n/a cars there was probably similar behavior that was altered to lower tailpipe emissions.
I'll happily eat my shoe if someone can provide empirical evidence of before/after changes to each drive mode. Thus far, no one has. The overwhelming majority of people say there's is no notable difference in power, and that the sport+ PDK behavior was changed so that it doesn't keep the car above 4k RPMs at all costs anymore.
I'll happily eat my shoe if someone can provide empirical evidence of before/after changes to each drive mode. Thus far, no one has. The overwhelming majority of people say there's is no notable difference in power, and that the sport+ PDK behavior was changed so that it doesn't keep the car above 4k RPMs at all costs anymore.
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From: Honolulu Hi
The device copied the original flash, it would be interesting to dyno it. but a gps timer on a cellphone isnt going to be enough in court or otherwise, but a consistent 1 second difference is enough to convince me
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From: Minnesota
Originally Posted by Some guy on the internet
Yeah but the EPA fix made my car faster.
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In any case the softronic tune
Makes the car faster than stock period so that could be what your experiencing.
A second under identical conditions seems empirical. I have not been to a dealership for this reason. What could they possible do to be improving the car via the government or a lawsuits advice. Our judicial system and politicians are crap.
A second under identical conditions seems empirical. I have not been to a dealership for this reason. What could they possible do to be improving the car via the government or a lawsuits advice. Our judicial system and politicians are crap.