10/19/2026
When you turbocharge a 911 the variations on how you set it up are endless. With this low mileage 930 I wanted to retain the stock appearance as much as possible so that meant keeping the CIS injection system which is antiquated by today’s standards but it can be adjusted to work far better with all that the great Porsche tuners and parts makers have developed over the last 50 years.
It’s common to hear the term Widowmaker on these cars simply because that average person doesn’t realize when the delayed power comes on when boost develops. So these cars in stock form go from an underpowered car to an overpowered car in the blink of an eye but when that blink happens is delayed. So with some radical changes to the exhaust, turbo, and fuel system we can eliminate most of that turbo lag while adding more power.
Sometimes the only way you can learn what works, how it works and how it fits is to run it then take it back apart to adjust or repair an issue. I’ve had this engine out a couple times - it’s frustrating. But not the last piece of the puzzle is here and it’s going back together this week with all the improvements working together in harmony. Stay tuned for sound and driving videos.