2014 Cayman 2.7L to 3.8L
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Thread: 2014 Cayman 2.7L to 3.8L

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    2014 Cayman 2.7L to 3.8L

    It’s been a while since I last posted. I just wanted to thank Scott Slauson from Softronicicon for tuning my conversion.

    The car is a 2014 Cayman with a 3.8L with upgraded cooling, brakes and PSS10 suspension. It has the larger ipd plenum and 82 mm throttle. Lowered.

    This is my third conversion. I previously did a 2000 Boxster and a 2005 Boxster.

    I did the work myself and worked with another tuner to reprogram the DME. While I know the tuner worked hard, we were never able to get the cold idle correct. Until the O2 sensors warmed up and operated closed loop, the car would miss because it thought it was the 2.7L.

    I shipped the car to Scott and he figured it out. Cold starts are much better. The car runs really strong.

    If anyone needs to ask any questions about this DIY, let me know.

    I’ll post some pictures ASAP

    Awesome car.

    Mike
    Last edited by mdw48009; 06-27-2019 at 08:50 PM.

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    Re: 2014 Cayman 2.7L to 3.8L

    Hello Mike,
    One of the most crucial things for any engine swap is the proper tuning as you know. While installing a larger engine is all in the mechanics of fitting it properly in which you did a great job it is only as good as the programming that runs it. Unfortunately I have always found the case to be in that shops and their tuners often do not know how to flash the car to generate the correct power through the entire range. They will always be under powered and as in your example you cant alter a 2.7 file to run the 3.8 engine as a 991 or GT4 generates. This was also the case for the 986,987 and the 987.2 in their swaps. Part of the problem is the limitations also of the units that are being used to flash the cars. They allow only certain changes and most of the tuning is outside of what they are using. I get many cars shipped to me for programming in which keeps me busy.

    Enjoy the car now at 420BHP and 345lb-ft.

    Best,
    Scott
    Softronic - Porsche Performance Software Tuning
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