sharkthehunter77

Saw one tonight at the checkers parts store and i must admit it peeked my interest. Looks wierd and a litle different! I know i can go onto the Holley sight and get info but i was also wondering if any forum members have used it or hav an opinion on it. Does it sound like something i could mount on my ZZ4?

djgrelli

My son and I put in a SB Chevy in his 87 Jeep Wrangler a few years ago. It wouldn't come close to passing emmissions here in Maryland. We were running a Holley Spread Bore. Changed it out with the Holley Pro-Jection and it ran right thru the emmissions test. It is a nice system. I'll admit it does look a little different but Holley must have done its homework because it does produce awesome power and the gas mileage is much better than the carb we had on the engine. Be advised it's not true fuel injection but a modified version of a throttle body.

Fast81

Been running it on Fast81 for over 4 yrs now. Don't beleive the Holley BS about the 2-brl only capable of 275hp. My motor is pushing close to 375hp with my 2brl and I have the screws only 50-75% open. I also don't have to have a laptop to tune it -- I can tune it while driving. When I had it dialed in by a Holley-trained tech, he even recommended upping the fuel pressure (it is adustable) and upgrading bigger injectors as future options if my mod'ing outgrew the system.

BigBadRed

The biggest pain is the fuel line (return) And it most certainly is True fuel injection. they offer both throttle body (replaces carb) and MPFI (replaces intake manifold. The throttle body is much cheaper.

flynhi

I ran an early version of their two injector throttle body unit for about three years before moving to TPI.
I found it to be much more responsive than a carb and it upped my dynod HP about 75.
It was also have to tune and have to be retuned with weather changes. Not hard to do, but a pain.
I expect their current models are much better than my early production model.