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Join Date: Jun 2019
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Chasing Response: Air-cooled Flat-Six with VGT Turbo Tech

https://forums.pelicanparts.com/porsche-911-technical-forum/1183414-chasing-response-air-cooled-flat-six-vgt-turbo-tech.html

Linking to my thread in the 911 Technical forum, for turbo guys that might not visit there often.

This project is moving along. Hope to have it on the dyno within a couple weeks!

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North Idaho CDA / Spokane area
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MoTeC USA Authorized Dealer
Porsche 959 Department Manager at Canepa *retired after 10 years*
Website / Webstore https://www.topperformancetuning.com/
Old 09-20-2025, 02:30 PM
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Join Date: Apr 2002
Location: Houston (Clearlake), TX
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After reading your thread I got curious if Garrett has any VGT aftermarket turbos and unfortunately I couldn't find one. I'm curious to hear how the tuning goes and how you set up the VGT. Is it just RPM based?
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2014 Cayman S (track rat w/GT4 suspension)
1979 930 (475 rwhp at 0.95 bar)
Old 09-22-2025, 05:38 AM
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Quote:
Originally Posted by David View Post
After reading your thread I got curious if Garrett has any VGT aftermarket turbos and unfortunately I couldn't find one. I'm curious to hear how the tuning goes and how you set up the VGT. Is it just RPM based?
VGT tuning is fully mapped on load and RPM, standard 3d table, with some functions like opening at cruise to reduce EGTS, closing at idle to quiet the exhaust etc.
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North Idaho CDA / Spokane area
Instagram: to.performance
MoTeC USA Authorized Dealer
Porsche 959 Department Manager at Canepa *retired after 10 years*
Website / Webstore https://www.topperformancetuning.com/
Old 09-23-2025, 01:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
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cool project.

I always use it as an example of progress that my 4cyl cayman gts is so much faster than her older brother with 2 more cylinders.

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Old 09-23-2025, 02:58 PM
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