stack efi

KevinW · #1 (**permalink**) 04-20-2011, 05:07 PM

Does running one of these systems improve mpg?
if so, anyone know by how much?
I have heard some excellent figures on power output and mpg for people running the Chevy LS7 engines, but obviously thats full EFI.

littlewave · #2 (**permalink**) 04-21-2011, 01:07 PM

Ok guys I'm really looking hard at the Inglese system. Any feedback positive or negitive about this system would be greatly appreciated.

GLS-BDR226 · #3 (**permalink**) 04-21-2011, 07:44 PM

Does anyone know of any good installers/tuners in the Dallas/Ft Worth area for Stack EFIs or Webers?

bobcowan · #4 (**permalink**) 04-21-2011, 08:41 PM

Quote:

Originally Posted by KevinW

Does running one of these systems improve mpg?
if so, anyone know by how much?
I have heard some excellent figures on power output and mpg for people running the Chevy LS7 engines, but obviously thats full EFI.

Yes, they can improve MPG, by metering the fuel more accuratly for each situation. A carb has 3 metering circuits, and is dependant on vacuum signals. It is not capable of adjusting for altitude, weahter, tep, etc. EFI has hundreds of fuel points, and can adjust for all those variables.

How much depends on the engine, it's state of tune, the EFI tune, use, etc.

My 427W has high compression and a huge cam, it makes around 600hp and on the race track it's a real monster. I drove it to Jackson Hole last summer. Had a great trip, it ran great on pump gas, and got 20mpg. On the street it's just a real joy to drive.