So, as I guess I have written about before I have done a lot of "breathing mods" om my 986s 2003.
Input: Cayman Airbox + the Larger MAF, a well flowing hose, 74mm TB, IPD Plenum.
Output: Catless Headers, catless "testpipes", FVD Sound version muffler.
I´m working with a well reputated tuner with Dyno and long experience. Since the larger MAF tube needs to be adressed somehow we decided to start with the 550 anniversary tune (since that car utilizes the larger MAF tube) and proceed with the mapping from there.
So far so good, but now before we start the mapping my tuner advice me to prepare the car with spark plugs, "one notch" colder than standard to make room to max out the tune in the high register. This makes me a bit hesitant, I thought that going to a colder plug might be reasonable for a turbo charged engine or something with a lot more than intake/exhaust mods.
I´m now running the BERU 14FGR6KQU as the Porsche recommended standard.
May I ask you guys for any thoughts? My suggestion would be to start out with the standard plug and then follow up how it behaves. The car is 80% street but when on the track it´s driven hard...
I may add that the tuner is very well reputated and experienced, but I guess mainly from a lot more extreme cars than the M96 Boxster.
