APR and others have been seeing 410-415whp with a tune on a GTS, but these guys from Korea have extracted 20whp more. The relative baseline of 350-355whp stock is consistent as well. Only unknown I see if they used race gas or not. If it's 93 octane this may be the highest power extracted with just a tune.
Overseas tuning results
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I have no doubt that APR and others could extract another 20hp+ if they wanted to. A good tuner will leave some margin on the table in the name of safety and room for taking the car to the track.
These ECUs are complex and it would be very easy to screw things up. I have a bit of experience with tuning a few platforms and have installed a stand alone system on a 4 cam VVT 8 cyl engine. I know enough about this stuff to understand how complicated the current OEM ECUs are, the large number of tables involved and how one table will be tied to several others. Without a VERY good understanding of how they all play together, problems can occur, even down the road.
For example, you could have slightly lean conditions to get more power, or light detonation under very specific operating conditions that over time could weaken and eventually break ring lands etc. This could take thousands of miles or years before a problem could surface.
Honestly, I would be very leery of most tuners for these reasons...
These ECUs are complex and it would be very easy to screw things up. I have a bit of experience with tuning a few platforms and have installed a stand alone system on a 4 cam VVT 8 cyl engine. I know enough about this stuff to understand how complicated the current OEM ECUs are, the large number of tables involved and how one table will be tied to several others. Without a VERY good understanding of how they all play together, problems can occur, even down the road.
For example, you could have slightly lean conditions to get more power, or light detonation under very specific operating conditions that over time could weaken and eventually break ring lands etc. This could take thousands of miles or years before a problem could surface.
Honestly, I would be very leery of most tuners for these reasons...
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In North America, APR is the only one I would trust at this point. There may be others with the same understanding of the ECU but IMO they have done a poor job marketing their expertise.
As far as I know, APR was the first one to figure out how to tune the ECU without having to send it in to be physically modified. They also were the first ones to post about the additional tables they found to help keep things safe and cooling in check. They also do a great job talking about how they instrument the car to verify their changes are safe. Sooner after APR came out with their tunes for the 718, another large tuner magically figured out how to program the ECU without modifications, and found these tables uncovered by APR and released version 2.0 of their tunes. The timing seemed suspect to me.
Ive mentioned it before, but wanted to be clear that I have no ties to APR, nor am I or have been a customer at this point. I may tune my 718 S in the future but it is still under warranty so not sure I want to give that up yet.... but I sure am tempted
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I'll let you in on a secret; none of the companies figured out front door flashing in house. COBB, APR, etc.. released it at the same time because they all use the same tool manufactures for this work. COBB didn't tell us that but I'm a software engineer and have been involved in reverse engineering ECUs on and off over that last 25 years. It's an educated guess on my part..In North America, APR is the only one I would trust at this point. There may be others with the same understanding of the ECU but IMO they have done a poor job marketing their expertise.
As far as I know, APR was the first one to figure out how to tune the ECU without having to send it in to be physically modified. They also were the first ones to post about the additional tables they found to help keep things safe and cooling in check. They also do a great job talking about how they instrument the car to verify their changes are safe. Sooner after APR came out with their tunes for the 718, another large tuner magically figured out how to program the ECU without modifications, and found these tables uncovered by APR and released version 2.0 of their tunes. The timing seemed suspect to me.
Ive mentioned it before, but wanted to be clear that I have no ties to APR, nor am I or have been a customer at this point. I may tune my 718 S in the future but it is still under warranty so not sure I want to give that up yet.... but I sure am tempted
I think COBB did the leg work to create tools and base tunes for Pro-Tuners like us to take to the next level. However, it's a bit of marketing failure when customers think the OTS COBB tune is the end game and compare it to APR who only offers OTS tunes. COBB OTS maps are not aggressive tunes at all, they are safe, trouble free tunes that Pro-Tuners can take to next level and dial in for you local fuel and conditions.
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Any experience with them? I just bought my Cayman S, it had the tune previously, but the dealer removed it because they give a warranty when I bought it. I can get it back from JD for a decent price, but wondering if I should void my warranty with it or not hehe. JD says that if I have warranty issues they can flash it back to stock/reset it, however they cannot guarantee Porsche can't see this.
Actual dyno of my car:
i didnt go from now , inhad a word with porsche , the minute they connect , you go on a black list , approved warranty gone and will never return for the next owner , so,i decided at this point to not do it for now , the gts is way quick enough , always feels slow , but so deadly fast , i dont need this power at this moment , just maybe to enjoy my ego ...Any experience with them? I just bought my Cayman S, it had the tune previously, but the dealer removed it because they give a warranty when I bought it. I can get it back from JD for a decent price, but wondering if I should void my warranty with it or not hehe. JD says that if I have warranty issues they can flash it back to stock/reset it, however they cannot guarantee Porsche can't see this.
Actual dyno of my car:
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now everything is so balanced that i dont need it like on my TT-RS. maybe in @ few years or time i decide to do it but for now i wait a bit to see for the warranty. its not a car as a vw gti you go for tuning , its to expensive for breakdown , i will see ... en read ... 🤔
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Your 98 is equivalent of US 93. You can google it, but the method of octane measurement is different.
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Octane rating - Wikipedia
en.wikipedia.org
let me know if you have the tune and experience ...
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