The manganese (orange stuff) in the race-gas concentrate provided some flow visualization of the exhaust flow in my x-pipe. Where there are fewer orange particulates should be where there is higher exhaust velocity. Mike noticed my x-pipe was a little offset at PECLA. I swear I had installed it centered. After Streets, the x-pipe had definitely shift towards the left about half an inch which makes sense. More exhaust flow should be going down the right side of the car because the flow path is about half the length compared to going down the left side of the car. So, the extra flow from the right side pushed the x-pipe over to the left. Seems the deep-V in my design to block the exhaust flow paths from ramming straight into each other is doing its job. I re-centered the x-pipe and tightened the clamps more.
On the drive to the track which is uphill, I averaged about 30mpg. On the drive home downhill, I got almost 35mpg including a bit of stop-n-go traffic in LA. It’s easy to get 32mpg on a highway drive while in Sport + mode. Driving in Normal mode, I would expect to improve that figure a coupe mpg due to the engine coolant and oil running hotter; hotter oil is less viscous for lower shear losses and hotter coolant means less heat loss from the combustion to the coolant.
With the car only making 300hp, the stock thermal systems are up to the task of keeping the coolant and oil temperatures in check while tracking in mid-60F temperatures. The coolant temperature stayed in the mid-80C range. At PECLA, I saw a peak oil temperature of 106C and I got it just a smidge warmer at Streets of Willow at 108C. My personal target is to keep the oil temperature below 115C. The higher trim 718 GTS with more power also comes with a third/central radiator to handle the extra heat from the extra power. The GTS comes with bigger brakes too. Y’all know I’m not leaving the power stock, so you can probably figure out where this is going. Oh yeah, I went around Streets of Willow roughly four seconds faster a lap than I did in the S2000 back when that car was naturally aspirated, driving both at my comfy 90% threshold; no doubt both cars could have turned much faster times in the hands of other drivers, but the times I turned were at my comfort levels which includes the consideration of potentially wadding up the car. Anyway, more torque, more power, and more tire helped with the lower lap times. But there’s a lot of room for improvement and getting the car tweaked to my personal preferences.
15 comments
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/
Using the Launch X431, it’s hidden somewhere under Porsche Stability Management which I think is under DCM. I had to actually use the search bar using the term ‘PTV’ to find it.
The picture of the screen is in Part 1, page 5. https://motoiq.com/project-cayman-t-part-1-intro-and-must-do-mods/5/