Am thinking about improving the sound of my base 997.2. Am trying to decide between the Fister and Gundo mods. However, I live in California and wanted to know if anyone with either mod has had trouble with getting their 911 smogged in CA?

 

I have the Gundo mod, and did not have any issues getting the car smogged this year.

 

I had Gundo 1.75" on my last 997.2, no problem with smog testing in socal.

Plan on getting Fister on this 997 when I get around to it.

 

I had the gundo on my old 997.2, because it's just a muffler mod and doesn't touch any catalytic converters or anything, it shouldn't change emissions. It just makes it a little louder.

 

Fister D on mine ....

 

I have a Fister D muffler ceramic coated black with black tips owned now for nearly 2 years and 10k miles. The car was smogged, and passed, last year with zero problems. The cats are untouched, zero codes or issues otherwise. It is a California compliant mod. And it sounds great!

 

Yep no problems.