Hi,

running down an issue where the car has lost boost/power. It’s a 997.1 tt with exhaust and a tune. One day it was running fine pulling 20# boost and the next day, it’s flat and only pulling 15# boost. The only codes are for the MAF sensor. Upon inspection, there is a diode missing. I’m curious where it might have gone? Anybody else seen this? Thanks!

 

Some of them actually do not have an external mounted diode. Not saying you may not have a MAF issue, but noting that it may well have come like that. Examples below of other MAFs.

And note there is a lot going on inside as well...

Good luck,
DC