[gossend]

I have an Aeromomentum AM15-HP engine in my -12. Want to install a small, homebrew smoke system just for fun. The exhaust is four-into-one with a bung just after they come together. Will that work, or do I need to be closer to one of the exhaust valves??

 

[Pilot135pd]

Do a search here regarding smoke systems and you'll get tons of info on that. I made my own with nozzles from one of the VAF sponsors.

 

[pazmanyflyer]

I have an Aeromomentum AM15-HP engine in my -12. Want to install a small, homebrew smoke system just for fun. The exhaust is four-into-one with a bung just after they come together. Will that work, or do I need to be closer to one of the exhaust valves??

You'll want to mount the injectors as high on the exhaust pipe (below the EGT) as you can to have the best burn. It will be a short run form your proposed location and you'll have a messier belly and not great smoke.