holley kit?

[wtrmrk]

so I'm not injection guy but why cant you just use holley's projection 2 barrel kit? They have a closed loop upgrade so even tho cfm rating is a bit over rated for our engines ecu should compensat the air fuel. just seems to be a easy bolt. but thaught i would ask you guys if anyone has tried using one. thanks

[wagon]

The early projection electronics were rubbish. I don't know about the later stuff, but I have used and built many MS boxes - they are good. I would use just the TB and use a MS box to control it.

[fordconvert]

As long as you are ok with the 2bbl into 1 concept you should be able to buy the holley 2bbl adapter plate to mount the holley tbi (or GM tbi) on your adapter. I did not have much trouble with the early holley ECU on 350 chevs and my 425 caddy. I suspect that there would not be enough range in the adjustments to get it to run on an engine as small as a 170. I could not get one to run on my 500 with the same settings I was using on the 425. It would start, idle, or drive. Never all with the same settings. MS could be setup to work on anything as long as you have the right size injectors. The typical holley one you see cheap used on ebay was the one they called the 670. It came with 2 85 lbhr injectors. I think there were also 52lbhr injecors but I dont know what model they came on, only seen them on ebay. I would look for a GM TBI off of a 4.3 or 5.0, those should be 40-45 lbhr and 43mm bore each which should be the ballpark for a 170. They should be cheap easy to find on 87-95 trucks & suv's. Get a MS from a good place like DIYautotune and you should have a good setup once you get it all figured out. It takes time but when you are done you will understand what you have and be able to work on it yourself and improve it.

[wtrmrk]

sorry i should have said that i was looking for a setup for my new motor its a 200 with a oz250 head so have the two barrel manifold. this is my daily driver and was thinking that upgrading to fuel injection would make it more drivable not to mention that with the o2 sensor i would not have to mess with jetting to try to get air fuel right. but you guys think that a tbi with a ms control will work better than the holley kit that might be the way i go.

[wtrmrk]

only reason i was hoping the new holley kit was good was I wanted acomplete bolt on kit and not have to run around find parts and build things as the rest of the truck, body work and such keeps me pretty occupied if you know what i mean

[fordconvert]

I have not really looked close at the new holley kits. I believe they all come with a universal 4bbl mounting plate so you may still have to buy the 2bbl one separately. The current 'digital' ecu's may have the range in them. I see the 950-20s is 'Commander 950 Throttle Body Fuel Injection System 4 Cyl Even Fire 6 Cyl V8 2 bbl 670 cfm Range Up To 275 HP' Looking at the picture it still looks like it comes with a 4bbl plate but who knows that may not be the real picture. I see that set is around $1300. If it is plug and play it may be worth it but if its not thats a lot of money vs. a junkyard GM and a MS. I would think a GM/MS could be done for around $500.

I have real trouble believing there is any system that you can just hook up, start the car, drive, and it magically calibrates itself. The air/fuel map part is pretty easy to figure out. What is a pain with a system like MS is getting the injector characteristics and such figured out. With a package system like the holley you would hope that there is just an option in the software where you pick the throttle body you have off a list and its done. Then you have some other number you adjust till it starts and runs. AFter that you do some tweaking and you are there. One thing people dont realize is missfires screw up 02 readings. I found the best way to get the base tune was to ignore the 02 and just go by ear. Get it to idle good. Get it to rev well. You can then take it for an easy ride down a quiet street, just tweak things till it seems to run well. At that point you will be in the ballpark and should be getting good 02 readings and begin to start to dial things in. This is where things like timing are going to come in so its nice if you also have that under computer control. MS can do that, not sure about the holley. MS also has some great logging options, not sure about holley.

Tip #2 if you are dealing with a new motor, get it started and at least through your cam break in with a known good carb. Other option would be to take it to a dyno shop and have them break it in. Your first time with an efi system is going to be hard on a new engine so you dont want to risk it any further than you have to. If your old engine is still running put the EFI on there with an adapter plate. You will at least be familiar with the system and the settings should be close enough to get a medium 200 running.

[wtrmrk]

thanks for the advice might go the ms route. holley does have a 400 cfm kit also might be a better throttle body for a six. well write a post when i get closer. probally just round up parts this winter as i don't have a garage and working in the driveway in freezing weather isn't my thing if I can help it. so spring time well be the next modifacation i make. till then thanks

[Zorm]

I have a older 1bbl Holley analog Pro-jection system for a Jeep with the 258 6 cylinder, what about adapting that on our little 200s?

[fordconvert]

Mounting should be fairly easy since you dont have to deal with the 2 into one hole issue. Throttle linkage may be a little easier since its closer to what was stock. Only concern is the analogs did not tend to have a lot of range in them. You may be close enough that you can just mess with fuel pressure and TPS. If I had one laying around I would try it. If it did not work I would hook a MS up to it.

[Zorm]

I think I will try the analog Holley pro-jection, since the engine I was going to put it on is being replaced with a MPFI engine (swaping in a 4.0 taking out a 258 Jeep).
I'll do my own post/write up, may be a bit, I need to work on a our Burb first.

[wagon]

I have built many megasquirt boxes. My Falcon (250ci) has had one for over 3 years now with no trouble. It even has EDIS (no dissy) and it controls the fans, etc.

Now, as for ease of setting up.... A friend of mine just put a 1UZ (Toyota V8) in his Hilux. The current Megatune software has a VE table predicter - we guessed the HP and Ft-lb numbers and out popped a VE table that was pretty close - close enough for us to easily start and run the vehicle up and down the street.

Anyway, what I'm trying to say is don't be scared of setting it all up - you'll get it running quick enough. The polishing is what takes the time.

[69Falcon]

The polishing is what takes the time.

That's the part that has kept me from going with fuel injection so far. My Falcon is my daily driver, so it has to be able to make the trek to work every day.

[wagon]

The polishing is what takes the time.

That's the part that has kept me from going with fuel injection so far. My Falcon is my daily driver, so it has to be able to make the trek to work every day.

If you get it running on a weekend it gives you enough time to have it going well enough to get you around. You can also do a bit of tuning every day when you drive it... you will notice subtle changes and improvements.

[Zorm]

forgot I posted this? Going to try this after I get the power brake booster done in the mustang, need to see what psi fuel pump I need.

[woodbutcher]

Hi fordconvert.Check out some of the newer F.A.S.T.(R)systems.Supposedly,they will do exactly what the other fellow was talking about.
Input the appx HP,torque,CID,and a few other items with a hand held programmer that comes with the unit,and drive the vehicle.
It learns your driving style and programs itself accordingly.
Or so F.A.S.T.(R)claims.
There was an article on that particular unit about 2 or 3 months ago in HotRod(R) magazine.
Leo

[Broncitis]

Please look at the retrotekspeed system if you are going this route, much easier to install and alot more features, twice as easy as the fast system and much better personal support, look at the two side by side.