Quote:
Originally Posted by Steve1968LS2
Ok.. we tested the EZ-EFI today..
Installation.. WAY easy.. all the sensors along with the fuel injectors are contained in the throttle body. The only external sensor is one for water temp and of course the O2 sensor.
The interface is very easy to use. Install the unit, start the car and let it get to the specified operating temp (around 180-degrees). When you are in that area you hit a button and voila! it starts tuning itself.
Oh, there is one section where you set your AF ratios at Idle, Cruise, and WOT. You can also set a rev limiter (cuts fuel).
Once you make changes it takes a while for the system to "learn" and turn itself. So if this was in a car you would want to set it then drive around for an hour before you could consider it educated (although it always learns).
It bases most of it's tuning on the O2 sensor but there is an IAT and MAP sensor. It does NOT change the timing.
Fast says it is good for 550 to 600 but we found that in our test it's good for up to 500 crank hp. It's not that it runs out of fuel but more that it runs out of air.
We tested the unit and then swapped it for a carb. A 1000 cfm carb made more while a 750 cfm (4150 Holley) made almost the exact same as the EZ-EFI.
The rest was great.. the engine fired right up like it was an LS engine and once it learned the settings it was as happy as could be. Install was a snap as was tuning. For the $$$ it's a great option for those with moderatly powered engines looking for EFI on a budget.
There will be a dyno story in Super Chevy and a car install story in Camaro Performers.
Let me know if you have any questions.
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Steve,
We have been talking to Casey Wegner about a 415ci LS motor with the EZ EFI on it. He said they have made 600+ with the system on an LS based engine. Any thoughts? Do you think it is the efficiency of the LS over the Big Block that is allowing it to do this?