I don't know how much of a problem the fuel injectors would be. Even with a
52mm tb and open exhaust and cold air intake, my A/F guage pins in the rich
at WOT. I think running a little leaner would probably give a bit more
power. I've seen people drop 3-4 tenths just by tuning the mix a little
leaner especially when they are running as rich as my truck is.
Joe W.
----- Original Message -----
From: Jon Steiger <stei0302@cs.fredonia.edu>
To: <dakota-truck@buffnet.net>
Sent: Monday, January 31, 2000 7:38 PM
Subject: Re: DML: M1 manifold total cost
>
>
> On Mon, 31 Jan 2000, Bob Tom wrote:
>
> > At 06:49 PM 1/31/00 -0500, you wrote:
> > >Yes, any head designed for the Magnum engines will work with the MPI
> > >or M1 intakes. (as well as the stock intake, of course)
> > > -Jon-
> >
> > Jon
> >
> > Got any details on the MPI and/or pros/cons between the MPI and M1?
> > Also, have you heard anything about the 4-bbl tb for the MPI? TIA.
> >
>
> I haven't really heard much about the 4-bbl TB. Personally, I
> think its probably going to be overkill for anything this side of a
> wildly modified engine. I don't know for sure though. I think
> Frank got one that he is going to test out. It seems like you'd
> need a computer re-program for sure, and probably larger injectors
> to be able to maintain stoich. Just as a rough guess, assuming the
> stock TB flows 500cfm and the stock injectors are 19lb, then I guess
> the 1000cfm 4bbl would need about 38lb injectors to maintain the
> same safety margins... ?
>
> As far as MPI vs M1 goes, they are identical except that the MPI has
> the injector bosses drilled out and includes an adaptor to allow the
> stock TB to be mounted on the intake. The only reason you'd want to
> use the M1 is if you were going to use a carb instead of EFI. (The MPI
> actually *is* the M1 ("M1" is even cast right into it); the only
> difference is that they've drilled out the injector bosses for you,
> and they include that TB adaptor.) If you were going to use the 4bbl
> TB, you could either get the M1 and drill out the bosses yourself or
> get the MPI and stick the adaptor on a shelf.
>
> What sort of MPI details are you looking for? If I know 'em I'll
> fer shur let ya know. :-)
>
> TTYL!
>
> -Jon-
>
> .--- jon@dakota-truck.net -- or --
stei0302@cs.fredonia.edu ------------.
> | Jon Steiger * AOPA, DoD, EAA, MP Race Team, NMA, SPA, USUA * RP-SEL
|
> | '92 Ram 150 4x4 V8, '96 Dakota V8, '96 Intruder 1400, '96 FireFly 447
|
> `---------------------------- http://www.cs.fredonia.edu/~stei0302/ ---'
>
>
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