Kappi2907

Any cleaned their injectors lately?
Is it improving performance?

Cheers

Navaros911

Made my car run smoother every time. It's never hurt. I have it done as part of maintenance every 30k km or so... which means I can never accurately attribute improvements to one thing.

cjoenck

I had mine cleaned and flow balanced after they had 80k miles on them. Subjectively the car ran better but that may have been wishful thinking. I figure these injectors don't get any cheaper so cleaning and flow balancing them was good insurance. It's not that expensive and it's good maintenance I think.

Laker

I just use a bottle of Techron before every oil change per:

https://rennlist.com/forums/993-foru...tml?styleid=25

Jacke2c

I rebuilt my fuel/intake system after having a backfire caused by bad plug wires. I changed all the rubber goods and sent my injectors to https://www.witchhunter.com
My car ran night/day differently. That was about four years ago and it still starts first time quickly, no hesitation, no lights, no christmas tree effects, nothing but smoothcruising performance.
If I remember correctly, I had one injector that was about 10% out and the others were 4-5% different. They send before and after test data and replace seals and other needed components. Cheaper than new injectors. Also, remember to change your fuel filter.

LPMM

I also used witchhunter and experienced similar results as mentioned above. Here is my post https://rennlist.com/forums/964-foru...l#post12697634