• Registered: 2018-02-19
  • Posts: 47

Topic: Opinions wanted: FAST / Speeduino FI or Demon 650

Looking for opinions on which direction to go here. The car is the Horses Ass Racing 1985 Mustang. Ridiculed in the 2019 Gingerman wrap up video as a "systematic failure."  (3:07 min in) We ran again this year on a carb borrowed off of my Dad's '46 Plymouth, this time an Edlebrock 600 CFM. I have a FASt TBI and a Speeduino ECU that I need to finish the wiring harness for. Do i try this or just buy a Demon 650 that I can get NIB for $400? The rest of the fuel system can run either, it was originally set up to run the complete FAST EZ EFI 1.0 .

  • Registered: 2018-07-02
  • Posts: 266

Re: Opinions wanted: FAST / Speeduino FI or Demon 650

Is the new in box Demon 650 from Pacific Motors on eBay?  If so, those are mine. big_smile

What was wrong with the car?

I hate Edelbrock/Carter Carbs and will never run one. 

I like Holley/Demon's. 

I also like fuel injection.

2018 Where the Elite Meet to Cheat - Organizer's Choice Award
2019 Rust Belt GP - Spirit of Entropy Award
2019 The Tony Swan Never-Say-Die Memorial - Index of Effluency Award
2020 The Tony Swan Never-Say-Die Memorial - Class C Lap Winner