SKU: 19308908442

Fabspeed 958 Cayenne S/GTS XperTune Performance Software (11-14) (FS.POR.958V8.ET)

Sale price$869.83 Regular price$966.48
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Ships within 48 hours · Estimated delivery Aug 31 - Sep 5

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Description

Fabspeed 958 Cayenne S/GTS XperTune Performance Software (11-14) (FS.POR.958V8.ET)Purchase Disclaimer: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86. 1854. 12(a)(3), Clean Air Act 40 CFR 1068. 101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine

Purchase Disclaimer: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.

Achieve maximum power gains and driveability without sacrificing reliability. Easily flash your Cayenne with a Fabspeed ECU Tune utilizing the included handheld device.

Fabspeed Motorsport offers an alternative tuning method for vehicles equipped with ECU's that traditionally required bench flashing. No longer do you need to remove your Cayenne's ECU and mail it in for a tune. The Handheld device interfaces with the OBD-II port on your Porsche and your computer to complete the tuning process, which is as follows:

  1. Read stock data on vehicle via OBD-II port with Handheld
  2. Interface Handheld with software on your computer and send in data to Fabspeed Motorsport via email
  3. We use this data along with information you provide about your vehicle to write a tune for your specific setup and email back your custom tune in 1-2 business days
  4. Write the Fabspeed ECU Tune to your Handheld, then to the vehicle with the Handheld
  5. Enjoy your increased performance!

No need to send your ECU in to return to stock - simply use the Handheld to flash back, then to your Fabspeed ECU Tune again at any point!

POWER GAINS

  • Porsche 958 Cayenne S 4.8L:
    • Stock = 400 WHP / 369 TQ
    • Tuned = 420 WHP / 384 TQ
  • Porsche 958 Cayenne GTS 4.8L:
    • Stock = 420 WHP / 380 TQ
    • Tuned = 440 WHP / 395 TQ

NOTES

  • You must review our MyGeniusECU Tuning Guide and email the ECU Tuning Information form to us. We utilize this form to ensure we meet your needs and consider your modifications to deliver the best possible results.
  • You must have access to a PC / Windows computer (Mac OS not supported) to upload your factory file information to us via email and in turn apply our ECU Tune to your Handheld device.
  • Upon sending us your vehicle information,our tuner will email you a custom ECU Tune(s) within 1-2 business days.
  • The Handheld device "marries" with your vehicle and can only be used on one vehicle.
  • Special requests and tune file upgrades may be subject to additional fees.

Need some help using our XperTune Handheld Tuner? Watch our tuning tutorial video!

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 19308908442

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Librax2
Belleville, US
★★★★★ 5
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I purchased a new Sony TV and was having a lot of trouble coordinating the settings. After struggling for 1.5 days, I gave up and called the number for Asurion. There was a reasonable wait while I found the "right" tech person, but it was worthwhile. He was knowledgeable and patient. He gave me confidence and we worked together to solve all my issues. At the end he became pressuring, wanted me to buy a monthly gig with them.
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Reviewed in the United States on January 18, 2026
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Bob P.
Lowell, US
★★★★★ 5
They honor their product.
I've been dealing with Asurion for over a decade now. They're my first choice when making a purchase that I know I'm going to have around for a while. Asurion backs its product to the hilt. I purchased a mid-range priced printer about 2 1/2 yrs. ago along with a 3yr. warranty from Asurion to cover any unexpected 'surprises' that might happen to pop up. Fast forward to approximately 3 months ago, when my printer decided that it wanted to start acting up. The print quality was taking a nose dive; colors were beginning to drop out, showing streaks and fading. Clarity and sharpness are virtually gone. I contacted Asurion about the problem. I couldn't have found a nicer rep to deal with. She said not to worry and within minutes had the situation under control. She sent me all the information and pre-paid postage on how to pack and have my unit shipped to their repair facilities. In less than a week my unit was repaired and returned to me. However, this is not the end of the story. Within a few days, my unit was acting up again and doing the same thing it went in for. Again, I got hold of Asurion (Same great service, different girl). We repeated the same process as before, but this time the unit was there about a week longer. When I finally received the unit, I immediately hooked it up and put it through the numbers, testing everything. To be blunt, the print quality was worse than the 1st time it went in for service. After voicing my displeasure (basically having a hissy-fit), I regained my composure and contacted Asurion, again! This time they told me that since their techs were unable to resolve the issue and to not have me waiting any longer than I have already, they're going ahead and refunding the total amount I paid for the unit. Even though it was somewhat of a Pain-in-the-ASS to go through, I couldn't be happier. Within 48 hrs. I had my refund in hand and I turned around and purchased a replacement Printer. Moral to the story, have a contingency plan, Just in case. Check out Asurion: Great customer service - Nice people, very competitive pricing for their products and they honor their word by their actions. Highly recommend Asurion to anyone.
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Demi
Massapequa, US
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Reviewed in the United States on March 30, 2026
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steve conley
Dallas, US
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never give up
Product was as advertised even though item was over a year old, I was taken care of.
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Reviewed in the United States on June 12, 2026
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Amazon Customer
Belleville, US
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Great job by Asurion!
Asurion handled my claim quickly and efficiently. My return was picked up by UPS and an Amazon gift card for the full amount was received as promised. Very happy with the process.
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Reviewed in the United States on April 17, 2026

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