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Discussion Starter · #1 ·
i've been searching the web and have only found 2 tuners for the 718 however both specify they are only for the 2.0. is there an option out there for the 2.5?
 

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I just ordered a 718 Cayman GTS arriving march and my Porsche center tell me that I can buy in his shop, with a Porsche agreement a power tune for 400hp.
So no problem with the Porsche maintenance and it’s no visible in case of problem with an insurance!
 

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For those of you who knows, does Techart have a good reputation?
The are a bit more expensive than MTM.

3,6 sec without any tuning doesnt sound right, around 4 are the numbers that i have heard of.
 

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3.6 is a valid test result.

There is a great calculator in the Corvette Forum that claims to be accurate within a few hundredths of a second:
https://www.corvetteforum.com/forum...mathematically-based-0-60-mph-calculator.html
(There is a great mathematical explanation in the above link)

I took my personal vehicle to the drag strip and got a 1.742 second 60', 4.919 second 330' and 7.547 second 660' (1/8th mile) time. The Excel spreadsheet uses the 1/8th mile speed as a check. The Excel calculated speed is 94mph and my actual was 93.47mph so the math in the Excel spreadsheet seems solid.

My calculated 0-60mph was 3.44 seconds. Bone stock. Stock tires. Stock tire pressures. 93 octane pump gas. No burn-out.

You would expect my time to be slightly better than the magazine since I launched on a prepared drag racing surface.

P.S. My 1/4 mile was 11.722 seconds at 117.12 mph which is consistent with the magazine's results with a slightly better launch.
 

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For our Swedish members, i got this answer from Techart.


Thank you for your inquiry.
Please find attached my offer for the TECHART power upgrade you are interested in.
I´m asking a dealer in Sweden if he is agree to take care about the installation.
I will let you know.




The price they gave me was 3748 EUR
 

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I did see the TECHART information: TECHART - Performance

TECHART claims 0-100 km/h (62 mph) in 3.9 seconds.

Car and Driver claims 0-60 mph in 3.6 seconds: https://www.caranddriver.com/reviews/2017-porsche-718-boxster-s-pdk-automatic-test-review

I doubt it takes 0.3 seconds for the 718 to get from 60mph to 62mph, so I question how much performance you really get for your money.
In fact there has been for some time an independent test result on Fastestlaps.com with 3.8 0-100kph for stock 718 S. So Techart's tune promises to slow you down a bit! Interesting marketing there... Porsche 911 Carrera vs Porsche 911 Carrera S vs Porsche 718 Cayman S vs Porsche 911 Carrera GTS - FastestLaps.com*

The larger issue: it's just silly that any tuner quotes their 'improved'' horsepower figure without also sharing what their baseline dyno run established as true hp from-the-factory. I think Black718 and myself (as well as some others here possibly) understand that '350' is a purely arbitrary figure -- to use that as the assumed baseline in any claim of tuning improvements, as well as not providing separate numbers for 'tune-only' independent of bypass-pipe, does not reflect rigorous engineering.

I suspect that tuners are using it to their advantage *not* to reveal baseline results, as it would make their tunes look relatively modest in terms of delta from true stock hp....

Note to OP and others seeking big 718 power boost from tuners, GT models or facfelift.gen 982: make sure you first understand what's already there in real-world performance potential with the current 2.5/VTG, irrespective of factory figures.

* (scratch out 350 and write-in 390ps for the 718, and the metric/kph results on this chart are perfectly linear and consistent relative to power/weight. All cars are current gen PDK, launch control, and B6/B4 turbocharged powerbands, similar weight and Cd/frontal area. The 0-60mph number for 718 is 'manufacturers data' so replace that, and the quarter-mile data below, with Black718's stock results. Then this whole chart is just amazingly *right* for where a 390hp 2.5/VTG slots into the linear power progression of current Porsche turbo engines. btw you can see the source for any result by right-clicking mouse over the data box.)
 

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In fact there has been for some time an independent test result on Fastestlaps.com with 3.8 0-100kph for stock 718 S. So Techart's tune promises to slow you down a bit! Interesting marketing there... Porsche 911 Carrera vs Porsche 911 Carrera S vs Porsche 718 Cayman S vs Porsche 911 Carrera GTS - FastestLaps.com*

The larger issue: it's just silly that any tuner quotes their 'improved'' horsepower figure without also sharing what their baseline dyno run established as true hp from-the-factory. I think Black718 and myself (as well as some others here possibly) understand that '350' is a purely arbitrary figure -- to use that as the assumed baseline in any claim of tuning improvements, as well as not providing separate numbers for 'tune-only' independent of bypass-pipe, does not reflect rigorous engineering.

I suspect that tuners are using it to their advantage *not* to reveal baseline results, as it would make their tunes look relatively modest in terms of delta from true stock hp....

Note to OP and others seeking big 718 power boost from tuners, GT models or facfelift.gen 982: make sure you first understand what's already there in real-world performance potential with the current 2.5/VTG, irrespective of factory figures.

* (scratch out 350 and write-in 390ps for the 718, and the metric/kph results on this chart are perfectly linear and consistent relative to power/weight. All cars are current gen PDK, launch control, and B6/B4 turbocharged powerbands, similar weight and Cd/frontal area. The 0-60mph number for 718 is 'manufacturers data' so replace that, and the quarter-mile data below, with Black718's stock results. Then this whole chart is just amazingly *right* for where a 390hp 2.5/VTG slots into the linear power progression of current Porsche turbo engines. btw you can see the source for any result by right-clicking mouse over the data box.)

From what i know Cobbs the only one to have done pulls and released the numbers.
https://www.cobbtuning.com/baseline-dyno-pulls-2017-porsche-718-boxster/


And regarding 0-60, Black718 did it on a prepped Surface.
I would like to see what the numbers would be on normal road Surface.
I have seen anything under 4sec on Youtube up to this day.
 

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Excellent point Zuffenhouserules: Cobb's dyno was a Dyno Jet which tend to be higher compared to for example a Mustang Dyno.
In the words of one experienced tuner:
"If you drive your car in a situation in which you have no mass and you're in a vacuum, so basically if you do intergalactic racing in space, use a DynoJet. If your car sees gravity, and has an aerodynamic coefficient, and you race on a planet called Earth, then use a Mustang Dyno".

Would like to see some pulls on a Mustang Dyno. Some say the readings would be about 7% lower. If that is assumed therefore:
340 x 1.15 x .93 = 364 HP. What it really comes down to is that these so called tuner packages need a baseline pull on the dyno and then an "after tune install" pull on the same dyno to be relevant. Using manufacture's claimed HP to their readings is totally bogus and you'd be a sucker to fall for it.
 

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I realise that for many "bigger is better", but without tracking the car I have found little use for full throttle anywhere, anytime. The "Sport" button gives me all the performance I can use and still keep my licence.

I'm also somewhat sceptical that increasing the engine output substantially would come without any effect on reliability.

YMMV.
 

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Discussion Starter · #20 ·

i would hold of on anything from fabspeed. i just cancelled my order for a new exhaust after having problems with them, both with their production timeline and customer service. then i read a similar thread on rennlist and that sealed the deal for me.

fwiw i spoke with them last week about this tuner. they don't actually do anything, they send it off to another company in florida to do the tune.
 
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