Accessport for GTS 4.0/GT4/Spyder
01-29-2023, 11:09 AM
#91
Instructor
Had it installed for a few months now. No issues so far. Paired with Soul OAP’s and BMC filters it has noticeably more power all through the rev range. Some people could say it disrupts the smooth power delivery of the stock calibration. But I like the punchy throttle response. To me it just makes the car feel a little more raw. Which is exactly what I want out of this car. Curious to see what a Pro-tune can do..?
01-29-2023, 09:12 PM
#92
Burning Brakes
@BabyNSX
I admittedly carry pessimism when it comes to aftermarket tunes in the GT4
It seems Porsche squeezed just about all the juice out of the GT4 with the stock tune. The only meat left on the bone is what the EPA forced Porsche to take out with their exhaust setup
I admittedly carry pessimism when it comes to aftermarket tunes in the GT4
It seems Porsche squeezed just about all the juice out of the GT4 with the stock tune. The only meat left on the bone is what the EPA forced Porsche to take out with their exhaust setup
01-29-2023, 09:43 PM
#93
Burning Brakes
If not the case, they would have had no reason to put GT3 engine in the GT4 RS . . . they would have just tuned the GT4 engine
The only thing that held back the GT4 is the EPA
I use the phrase 'held back' reluctantly because the gold standard we are comparing it to is the GT3 . . . the GT4 is hardly held back by anything other than government regulations, which can be overcome through aftermarket exhaust options
It is always possible to squeeze a little more out of any engine, but manufacturers also need to consider long-term reliability. It is hard to 'out tune' Porsche engineers when it comes to maximizing performance and reliability
Avera
01-29-2023, 09:55 PM
#94
Burning Brakes
This is the first gen of the 4.0 based on the TT 3.0. Porsche typically leaves a lot of head room in their engines when first introduced so they can incrementally improve them with subsequent new models of cars. Base>X51>.2 base. They probably weren’t sure they were going all electric with the cayman/boxster line when it was developed. I also wouldn’t be surprised if they used it in a future 911T model or something else….
01-29-2023, 09:59 PM
#95
Burning Brakes
This is the first gen of the 4.0 based on the TT 3.0. Porsche typically leaves a lot of head room in their engines when first introduced so they can incrementally improve them with subsequent new models of cars. Base>X51>.2 base. They probably weren’t sure they were going all electric with the cayman/boxster line when it was developed. I also wouldn’t be surprised if they used it in a future 911T model or something else….
Avera
01-29-2023, 10:16 PM
#97
Burning Brakes
The GTS was obviously detuned, but we have been commenting on the GT4
Avera
01-29-2023, 10:26 PM
#98
Burning Brakes
There has been speculation about the GT3 engine in the Cayman forever. It wouldn’t be the same imo. 9k rev limit and true dry sump are meaningful in the marketing game.
01-30-2023, 02:51 PM
#99
Rennlist Member
They also had used the GT3 engine or a version of it in the Cayman Clubsports - I think. Porsche lost any credibility with me on what they can or cant do with a car or engine when AP stated emphatically "Cant put the GT3 engine in the GT4..." all the while hyping the GT4 and behind the scenes putting a GT3 engine into the GT4RS. Hypocritical, lying, little German Spokeshole for the Porsche Empire! Porsche can, does and will do everything and anything in its power to extract every single penny from our pockets while going to the razors edge of just below what they should do on a car to make more profits.
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01-30-2023, 11:59 PM
#100
Burning Brakes
The only thing 'holding back' the GT4 from the GT3 is its engine, not how Porsche tuned the engine
If not the case, they would have had no reason to put GT3 engine in the GT4 RS . . . they would have just tuned the GT4 engine
The only thing that held back the GT4 is the EPA
I use the phrase 'held back' reluctantly because the gold standard we are comparing it to is the GT3 . . . the GT4 is hardly held back by anything other than government regulations, which can be overcome through aftermarket exhaust options
It is always possible to squeeze a little more out of any engine, but manufacturers also need to consider long-term reliability. It is hard to 'out tune' Porsche engineers when it comes to maximizing performance and reliability
Avera
If not the case, they would have had no reason to put GT3 engine in the GT4 RS . . . they would have just tuned the GT4 engine
The only thing that held back the GT4 is the EPA
I use the phrase 'held back' reluctantly because the gold standard we are comparing it to is the GT3 . . . the GT4 is hardly held back by anything other than government regulations, which can be overcome through aftermarket exhaust options
It is always possible to squeeze a little more out of any engine, but manufacturers also need to consider long-term reliability. It is hard to 'out tune' Porsche engineers when it comes to maximizing performance and reliability
Avera
01-31-2023, 12:09 AM
#101
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I agree, and another tuner here will be glad to explain it to you over the phone if you do not believe it. And the gains are even larger when one changes the headers and exhaust, which Porsche has to design a specific way to meet requirements set by governing bodies.
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pinion (01-31-2023)
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01-31-2023, 10:23 AM
#103
01-31-2023, 12:16 PM
#104
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@COBB Tuning
OK I can offer my UK car to get this working in the UK via say Litchfield cars ?
OK I can offer my UK car to get this working in the UK via say Litchfield cars ?
~Jared
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mrd_spy (02-12-2023)
02-11-2023, 10:16 PM
#105
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@BabyNSX
I admittedly carry pessimism when it comes to aftermarket tunes in the GT4
It seems Porsche squeezed just about all the juice out of the GT4 with the stock tune. The only meat left on the bone is what the EPA forced Porsche to take out with their exhaust setup
Of course, you already addressed the exhaust issue with your Dundon components . . . getting back what the EPA took out
As you know, I also have the Dundon components and (1) TQHP gains were impressive; (2) I do not need any ‘more’ for my purposes on the roadways; and (3) throttle responsiveness is about as perfect as I have ever experienced
What I am most interested to hear from your experience is (1) how much ‘more’ you can get with your specific (Dundon) setup from an aftermarket tune; (2) whether more equates to better; and (3) if the slide proves to be worth the climb?
The answers to these questions MIGHT be different according to your roadway and track applications? For example, a few more HP at the top of the RPM range is likely irrelevant for the roadways, but might equate to a small margin you are after on the track
Avera
I admittedly carry pessimism when it comes to aftermarket tunes in the GT4
It seems Porsche squeezed just about all the juice out of the GT4 with the stock tune. The only meat left on the bone is what the EPA forced Porsche to take out with their exhaust setup
Of course, you already addressed the exhaust issue with your Dundon components . . . getting back what the EPA took out
As you know, I also have the Dundon components and (1) TQHP gains were impressive; (2) I do not need any ‘more’ for my purposes on the roadways; and (3) throttle responsiveness is about as perfect as I have ever experienced
What I am most interested to hear from your experience is (1) how much ‘more’ you can get with your specific (Dundon) setup from an aftermarket tune; (2) whether more equates to better; and (3) if the slide proves to be worth the climb?
The answers to these questions MIGHT be different according to your roadway and track applications? For example, a few more HP at the top of the RPM range is likely irrelevant for the roadways, but might equate to a small margin you are after on the track
Avera
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Dundon Motorsports
Gig Harbor, WA
253-200-4454
jamie@dundonmotorsports.com
www.dundonmotorsports.com
Facebook.com/dundonmotorsports
Instagram @dundon_motorsports