Y'all keep calling the distributors Chinese HEI junk but AFI offers a DUI upgrade and it's made in Memphis. I've been there. Sure maybe the parts are Chinese but they assemble them and test them right there.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
@lcwizard, do you recall what your compression numbers were prior to install? How much vacuum did the motor draw, would it be an issue with this particular set-up?
Thanks, Dave.
AFI is having a 20% off sale until tomorrow afternoon. I'm sorely tempted...
I have the 4 barrel Sniper on my V8. It's a real nice system but like anything I did have a couple hiccups.Here is another option, and a real game changer, for those looking for fuel injecting there older motors
Holley Sniper EFI
FiTech
I've installed a few brands of 2F fuel injection. Most with a reservation or two.
WE built a system for Man-a-fre back in 1999 through about 2003 so I'm familiar as to what should be expected. I tried their 2F kit with the 3F electronically controlled dizzy. I have to say it's the best running
kit I've tried in ten years. Idles great , no odd idle quirks coming to stops . No flat spots and smooth acceleration. If your OCD about wiring you may opt to add an upgraded fuse block. None of the sytems go crazy with the wiring details. I prefer the 1200 degree wire loom to plastic, especially near the motor.
That's just a personal thing, the system runs great either way . The air cleaner adapter isn't theirs. It's a remnant from our kits. The radio delete was replaced with a Glowshift electronic fuel pressure gauge and
a voltmeter. Both of these items I consider almost necessary to diagnosing fuel injection issues.
With TBI if pressure drops below 10psi or voltage drops below 10.5, things don't run well
View attachment 1513790
View attachment 1513791
View attachment 1513792
View attachment 1513793
What do you have the timing set to? I have recently bought a 78 FJ40 and the PO installed the system and I am trying to work out a few bugs. AFI told me to set it at 26 degrees at idle which I did but now the first start of the day is rough with a very high idle and the motor pings under load for a few minutes. Then it will settle down and run fine. Any advice???I've installed a few brands of 2F fuel injection. Most with a reservation or two.
WE built a system for Man-a-fre back in 1999 through about 2003 so I'm familiar as to what should be expected. I tried their 2F kit with the 3F electronically controlled dizzy. I have to say it's the best running
kit I've tried in ten years. Idles great , no odd idle quirks coming to stops . No flat spots and smooth acceleration. If your OCD about wiring you may opt to add an upgraded fuse block. None of the sytems go crazy with the wiring details. I prefer the 1200 degree wire loom to plastic, especially near the motor.
That's just a personal thing, the system runs great either way . The air cleaner adapter isn't theirs. It's a remnant from our kits. The radio delete was replaced with a Glowshift electronic fuel pressure gauge and
a voltmeter. Both of these items I consider almost necessary to diagnosing fuel injection issues.
With TBI if pressure drops below 10psi or voltage drops below 10.5, things don't run well
View attachment 1513790
View attachment 1513791
View attachment 1513792
View attachment 1513793
I thought it seemed high to but Norm at AFI said it twice???? I am gonna roll it back to 7 and see what it does. What is yours set at?26 seems pretty high.
Set it like stock with vacuum disconnected. Probably 7 degrees advance at 6~700 rpm. You can always bump it up a couple degrees if it doesn't seem
like its getting power.
Why they would suggest that much advance beyond stock , I don't know. The only change you're making is carburation. You didn't swap cams.
I've never tried to set any truck at 26 degrees advance so I don't know what to tell you about that.
Maybe he did not know you had a 2FI thought it seemed high to but Norm at AFI said it twice???? I am gonna roll it back to 7 and see what it does. What is yours set at?