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Plum Crazy
 Post subject: Holley Pro-injection 2d
PostPosted: Mon Apr 14, 2008 7:42 pm 
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Has anybody tried to use one of these 2 barrel fuel injection systems on a slant 6. I've see these units at swap meets very often for under 500 bucks. Seems like it would be perfect because all the small cfm 670 and price. I don't think a mild motor would need much more.
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DusterIdiot
 Post subject: Lou...
PostPosted: Mon Apr 14, 2008 9:17 pm 
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Lou has run this with some dissapointing results, I think due to it being TBI instead of MPI, and mostly because the old 2di analog computer was a pile of garbage, it should do better with the new Commander 950 computer ($$$), or the megasquirt computer might be and OK driver...

-D.Idiot
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Joshie225
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PostPosted: Mon Apr 14, 2008 9:20 pm 
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Lou, where are you!?

Lou had trouble with the analog Pro Jection and I don't think the digital with the knobs for tuning would be much better. I know the throttle body with Mega Squirt control works well, but it was a lot of work to get right.

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Sam Powell
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PostPosted: Tue Apr 15, 2008 5:57 am 
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I think its always alot of work to get it right.

:wink:

Sam

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Matt Cramer
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PostPosted: Tue Apr 15, 2008 6:10 am 
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The TBI unit itself is a decent item. The computer it came with, however, has two big obstacles to installing it on a slant six.

1. It's programmed for a smallblock Chevy, and the screwdriver tuning doesn't give you enough adjustment to change the map to what a slant six needs.

2. It's an alpha-N system, uses just RPM and throttle position for the fuel calculations. It's much easier to make a speed density or MAF based system work well.

I would only use a Pro-Jection setup like a parts car - rather than using the entire thing, take the parts off it that work and replace the ones that you don't need.

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Dart270
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PostPosted: Tue Apr 15, 2008 7:46 am 
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I have the 2bbl Holley TBI system on my 64 Dart with the Megasquirt 2.2 ECU running it. Currently mid 14s in the 1/4 and 24 mpg hwy.

I would not bother with the old Holley computers - wasted a million hrs on those piles of ....

Lou

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68barracuda
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PostPosted: Thu Apr 24, 2008 2:40 am 
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Quote:
The TBI unit itself is a decent item. The computer it came with, however, has two big obstacles to installing it on a slant six.

1. It's programmed for a smallblock Chevy, and the screwdriver tuning doesn't give you enough adjustment to change the map to what a slant six needs.

2. It's an alpha-N system, uses just RPM and throttle position for the fuel calculations. It's much easier to make a speed density or MAF based system work well.

I would only use a Pro-Jection setup like a parts car - rather than using the entire thing, take the parts off it that work and replace the ones that you don't need.
Like I am doing with my 4Di on my 318 - I am bolting a haltech f10x in

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