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Title: 991.2 sdi21 + upgraded inlet pipes/tial m660 Post by: k0mpresd on December 03, 2024, 09:23:02 PM we have installed a set of m660 tials to a 991.2 sdi21.2 along with the larger inlet pipes and bmc filter + catalyst delete pipes.
the car now will not idle lower than 1200-1400rpm and displays p0507 dtc for idle speed control error. according to the tech, they have confirmed there are no hardware errors with the installation. has anyone else experienced this? i still believe there is a possible hardware error of some sort. otherwise the car drives great. fuel trims at idle are normal, does not "appear" to be an air leak of some sort. i have disabled catalyst heating and modified idle torque reserve maps in both directions and nothing seems to help. anyone have any insight? is this a software issue that needs correcting? edit: SOLVED. Title: Re: 991.2 sdi21 + upgraded inlet pipes/tial m660 Post by: James1 on December 05, 2024, 02:39:25 PM Not Software,
I did a lot of testing on intake pipes, even running without on the dyno and had no idle issues |