You have got to post a photo of your setup!!!!!
"Any other suggestions? Would you recommend stand alone engine management, since it worked so well in The Fast and the Furious? Or should I use a less-encompassing approach like the TwEEcer or Apex? How about swapping in a SuperChip?"
I don't know, but wouldn't it be cheaper to just buy new parts for the hottub? A lot queiter and cleaner too! I mean it sounds really cool what you did and give you a huge A for effort, but from my thoughts and what others have posted, it will not work.
