EZ-EFI, Can dual throttle bodies be used?

redhotrod · #1 (**permalink**) 10-11-2009, 12:48 PM

Can EZ-EFI support 2 throttle bodies on an engine making more than 600 HP?
We have an aluminum hemi running a Max Wedge 2 x 4 intake manifold. Will the controller support 2 throttle bodies. I heard this mentioned on one of the hot rod TV shows, but didn't see anything mentioned on the FAST web site indicating that this can be done.

bluzman2004 · #2 (**permalink**) 10-22-2009, 01:22 PM

You can run a second throttle body on EZefi. A kit is about to be released tha comes as a dual quad setup. There is also an upgrade kit that will allow you add the second one to your current system. The front throttle body only had the injectors in it, no sensors or IAC motor. Works great and you will have the injectors and air flow to support up to 1200 HP with an upgraded fuel system.

studio57 · #3 (**permalink**) 12-21-2009, 07:26 AM

anyone installed and using dual quad setup ?? im thinking on putting one to 572 hemi.
if im making prox 650hp what kind of kit would you recommend?

bluzman2004 · #4 (**permalink**) 12-21-2009, 08:30 AM

I think 4 kits have shipped and no issues so far. I ran the kit all last year on the street and racing on weekends with zero problems and it ran great. You could just order the full kit with the dual quad upgrade and you would be fine for your horsepower. I would run the fuel pressure at 30 psi and that pump would work for you. The higher performance option with room to grow HP wise, would be to order the kit without the fuel system and order one of the larger fuel systems for higher HP motors.

studio57 · #5 (**permalink**) 12-23-2009, 03:40 AM

Thanks for the tips. i will inform you when we have dyno it !! also i will report how it acts on the streets in summer !!!

any spesific reason for the 30psi as manual has 43psi?

bluzman2004 · #6 (**permalink**) 12-23-2009, 09:47 AM

The only reason for the 30psi is that most likely 8 of these injectors can support way more hp that you will need (1200HP) so, buy turning the fuel pressure down you allow a better idle quality due to a little bigger pulse width at idle. At 30psi the injectors will still support almost 900 HP.
Let me know how yours works out. I love mine!!