Cost of CD ignition box
02-07-2008, 11:03 AM
#19
Rennlist Member
Well you are hanging out in the wrong crowds. Many including, god rest his soul, Chet have had many issues. I do not know what causes the issues but suspect the heat and the environment of a 911 engine bay to be suspect. The typical temperature is considerably hotter in the bay of a 911/930. I have tried since the late 80s to run that junk and it has always failed in an aggressive environment. Premature is well, not for everyone. The rebuild units are golden. I personally use M&W direct replacement CDI setup. Not cheap, but good. i also use these in my EFI conversions.
Many people I know still using them have mounted the boxes inside the car (fine for a dedicated track car but not for street use) on the appropriate dampeners and have not had issues but for those I know who mount them in place of the CD unit have had issues most of which failed on hot rainy days.
I found with the permatune they are very sensitive to voltage fluctuations.
