Mike B Smith

I am considering the Fitech 400 or 600hp kit on my mild 350 n( alloy heads, Headers, Comp cam .470/.488 lift, has anyone had any experience with these kits and whats the real world fuel saving over a 670 street avenger plus any performance gain? any help would be most appreciated

mobird

In most cases, fuel injection doesn't provide any performance gains over a well tuned carb. If you have a poorly tuned carb, you might notice some improvements with the better fueling.

Fuel savings vary widely because of the before mentioned carb tuning. I did alot of research on the efi systems (I'm almost done with my FAST Efi installation) and most of the people who saw big gains (4-10 mpg) had poorly tuned carbs to start with. Most of the real fuel savings come from running either a transmission with an overdrive or rear gearing for your driving range. In reality, a well tuned carb will be within a couple mpg of a throttle body EFI unit.

Can't comment on the Fitech system from first hand use, but I know they had quite a few complaints when they were first released. I think if you ask anyone, the Holley Sniper is the best one to go for right now in the entry-level EFI market. I only have the FAST system because I got it used for a fantastic price.

Metalhead140

I like my Fitech system, but I haven't used the Holly Sniper to compare. I know a guy with the Sniper on his '82, and he's reasonably happy with it after a lot of fiddling.

BlowAMouse

I put the FiTech on my buddys SBC in his jeep and I put the Sniper on my BBC in my Camaro

We are both very happy with our respective EFI units. He chose to use the FiTech because at the time, Sniper had a long wait time. I chose the Sniper for the options I wanted.

I agree the MPG and performance gains will not be much compared to a well tune carb. I have been tuning carbs since high school, much easier to tune the Sniper and no parts left over... IMO can't go wrong with either unit

BTW I run the FAST XFI on my blowen vette but that's another story...

60 SHARK

I installed the FiTech on my sbc C3 last winter ,, love it, it does everything it's advertised to do,, no issues, I love the ability to start with just a turn of the key, drop the clutch, and go!!! Build a good fuel delivery system, and your good to go,,

Vette5311

Stingre'

Love my Sniper EFI, easy to install, crisp throttle response and instant start