Holley Sniper EFI on Roush 427R

twobjshelbys · #1 (**permalink**) 11-11-2020, 10:28 AM

If you want to put EFI on a Roush 427R why not just get the EFI system from the 427IR from Roush? It'll have the tune and everything you need already set up for a Cobra.

Lou1119 · #2 (**permalink**) 11-11-2020, 04:19 PM

Quote:

Originally Posted by twobjshelbys

If you want to put EFI on a Roush 427R why not just get the EFI system from the 427IR from Roush? It'll have the tune and everything you need already set up for a Cobra.

From what I have heard the Roush Eli is quite difficult to tune. Not a plug and play

twobjshelbys · #3 (**permalink**) 11-11-2020, 04:46 PM

Quote:

Originally Posted by Lou1119

From what I have heard the Roush Eli is quite difficult to tune. Not a plug and play

That was the old Accel system which I had. It was a bear. They had not populated the Accel altitude compensation table. Once I did that it ran great.

They switched to a different system now. It's one of the self-learning ones but I believe they add a little more, don't recall which one. Supposed to be pretty good.