Technical Q&A
Welcome to PCA's source of expert advice, where our PCA National Technical Committee experts answer your questions about all things technical.
Where can I find the software to get my 3.1 PCM from version 4.75 to 4.76. I was told PCA has a download version?
Today | 2015 | Cayman | Electronics
just looking to update version from 4.75-4.76 which I believe was the last reiteration for PCM 3.1I just replaced the drive with a solid state version and thought I'd see if I could do this as well
READ ANSWERI have owned my 1983 Porsche 944 since new. I have looked everywhere to determine a specific option code on my car but I can't find it on the internet. Would you know what is Option Code N69?
Saturday 03/14/2026 | 1983 | 944 | Other
I have owned my 1983 Porsche 944 since new. I have looked everywhere to determine a specific option code on my car but I can't find it on the internet. Would you know what is Option Code N69?
READ ANSWERCold start, second gear engagement
Friday 03/13/2026 | 2004 | Boxster | Transmission/Clutch
I have a 2004 986. Years ago, 2015- 2016 I replaced the engine and transmission with a 3.6, 6 speed from a 2002 996. Car has been fantastic and since then I have driven another 40,000 miles. Last year, I started having a problem engaging second gear when starting and driving off for the first time. Second gear will pop out, but after this failure to engage, will work perfectly the rest of the day. It is only on the initial cold startup that this happens. I have replaced the ...
READ ANSWERHow where the rubber bushings originally installed at the factory on the 914?
Tuesday 03/10/2026 | 1973 | 914 2.0 | Suspension
I am not confident that my measurements taken prior to bushing removal are accurate. When I reinstall the bushings with liquid soap (the commonly recommended procedure), how much "working time" will I have to make corrections as I install the control arms to the chassis? Are there different solutions (glycerin, ??) that I can use that will increase it?
READ ANSWERWhat causes my brake pedal to pulsate when applied for braking?
Tuesday 03/10/2026 | 2018 | Macan | Brakes
None.
READ ANSWERcan you email me the service history of my car?
Monday 03/09/2026 | 2007 | 911 Carrera 4S | Engine
READ ANSWERWhat is the lowest rpms that will keep the battery fully charged. I do not do a lot of highway and I want to keep ti charged. Thank you, Dave
Sunday 03/08/2026 | 1997 | Boxster | Electrical
READ ANSWERIs there an alternative to liquid soap when installing rubber suspension bushings?
Sunday 03/08/2026 | 1973 | 914 2.0 | Suspension
Can a high quality non-petroleum based grease be used to install the rubber suspension bushings on the front control arms?
READ ANSWERLooking for a used steering wheel for a manual transmission 2014 Cayman S with multifunction controls and heated wheel.
Sunday 03/08/2026 | 2014 | Cayman S | Interior/Upholstery
Just bought a 2014 981 Cayman S with a manual transmission. It has a wood rimmed steering wheel that is very slippery. I would like to find a lightly used optimally Alcantara or leather steering wheel with the same functionality of multifunction controls and heated wheel for a manual car. Can you recommend a good source for quality used steering wheels? Most of the wheels I have found have PDK paddles. Can these be removed and the wheel used with a manual with n ...
READ ANSWERWhat are your thoughts and suggestions regarding the use of car covers? Impact to finish?
Thursday 03/05/2026 | 1984 | 911 Carrera | Body
READ ANSWEROil Recommendation for a 1975 914, 1.8
Thursday 03/05/2026 | 1975 | 914 1.8 | Engine
Do you have a recommendation for oil for my 914? Brand and weight please?Thank you.Ron
READ ANSWERWhen I'm driving with the top up and once the car is warmed up, I heard a subtle popping sound on the left side. Sounds like "puck". It's random vs. continous.
Thursday 03/05/2026 | 2005 | Boxster S | Other
The sound reminds me of a water dripping into a cup or pot. It's weird. When the top is down I do not hear it but that may be based on more outside noise.
READ ANSWERissue with insulation coming out of dash
Monday 03/02/2026 | 2008 | Boxster RS 60 Spyder | Heating and Ventilation
looking for options on repairs and a shop that might do the work in the Delaware beach area
READ ANSWERWhat are the best ECU performance tuners for a 2021 box through GTS 4.0?
Monday 03/02/2026 | 2021 | 718 Boxster GTS 4.0 | Performance Modifications
What are the best performance tuners for a 2021 box through GTS 4.0?
READ ANSWER2011 Cayman Base Rim and Tire Size
Monday 03/02/2026 | 2011 | Cayman | Wheels and Tires
I currently have the stock F17x7 et55 (205/55-17) and R17x8 et40 (235/50-17) rim and wheel setup. I am purchasing new tires for my new to me rims F18x8 et57 and R18x9 et47. I intend to go with F245/40-18 and R265/40-18 tires. The 18 inch setup is for HPDE. Will these fit without rubbing or modification? If they fit, is there any different tire setup you recommend over my choice? Thank you for your time and expertise! ...
READ ANSWERhow can I find the emergence front truck release
Monday 03/02/2026 | 1997 | Boxster | Cables and Controls
I am trying to locate the emergence release cable for the front trunk of my 1997 Boxster. It is supposed to be on the passenger side in the wheel well but I can't see it. I have seen a picture of it but can't find it. Does anyone know where I can find one? Thanks, Dave
READ ANSWERIf you have a secured parking area is it better for the car's battery life to leave the car unlocked.
Monday 03/02/2026 | 2011 | Cayman | Electrical
I leave my car unlocked with the windows down in a secure garage thinking that the security system would not be operational therefore, not utilizing battery. Will this extend battery life?
READ ANSWER968 Clutch Issue
Monday 03/02/2026 | 1992 | 968 | Transmission/Clutch
I have owned a '92 968 since '98 (and a '83 944 before that). The clutch has been getting progressively more grumpy as it gets older and can sometimes shudder quite badly from a start, especially when it is cold. The car now has 86,780 miles on it. And, I have replaced the engine mounts and transaxle mount recently, but those repairs did not help the clutch issue. More revs certainly help to get it moving, but I am thinking that it may be time to replace the clut ...
READ ANSWERare all top tier fuels equal, or do Chevron, Texaco, etc have ingredients that is preferred over fuels like Arco or Costco? Thanks
Saturday 02/28/2026 | 2024 | 718 Cayman GTS 4.0 | Fuel System
READ ANSWERre: 1985 944: ENGINE - February 2026 - Not trying to pick a fight, but my 1987 944 engine's RPM's dip on startup as well. Always has and still does.
Friday 02/27/2026 | 1987 | 944 | Engine
So, the statement "The later cars do not have this particular issue." is not really true, from my experience.
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