MAF BLM based tuning

Mike Rolica mrolica at meridian-mag.com
Wed Jul 19 12:24:55 GMT 2000


	Bruce ,
	    With that being the case why would I want to trash the MAF in
favor of
	MAP for my future forced induction application?  I know that
upgrading from
	a '870 to a '165 would increase my serial data rate but what would I
gain
	from a '730? 
	Drive ablity, tuning is easier..i found droped me over .5 sec in ¼
compared to stock maf

	 Couldn't the MAF data be recalibrated with a prom to measure

	greater airflow than it was intended to measure stock? 

	Then you loose resolution and hencedriveablity 

	 I'm hoping for
	500-550hp and would like use the MAF computer in the short term.

	Been through all this when I was a newbie too.....the 730 seems to
be a newer ecm.. got more tables and options to play with, like lean cruise
mode, better tcc control(not that it matters to you)
	Easy to patch stuff from other 730 apps, close relative to 749.. I
think, so is possible to controll boost,ect ect..
	Trust me.. much easier to tune....better throttle response, and mpg
in town and in hills... higway was same as 165.,

	Jim Brady
	'87 Monte SS 383 TPI 6 speed

	>
	> Er, hmm,
	> and where is it said that that maf is a 255er?.
	> The GN is, a 255er.
	> The MAF doesn't stop the engine from making any HP at a specific
gm/sec,
	> just your out of calibration when that happens, ie no more timing
	> corrections or fuel corrections can be made.  Given the right
combo, you
	can
	> get 500 HP out of one, but that probably er could just as easily
be 550.
	> Grumpy
	>
	>
	> > The MAF just barely touches 231 as the automatic shifts, so NO
its not
	> > maxxed.  Now the LV8 rides at 255 except for a brief drop off
just
	before
	> > the shifts, in a WOT run.  All the talk about maxing out the MAF
and my
	> > stroker motor ain't there yet, but the E.T. numbers show it's
pushing
	350
	> > HP.  If what is really meant is that the LV8 will max out, well
I can
	see
	> > that.
	> >
	<snip
	> > > Dave,
	> > >     Are you outflowing the MAF yet?  How are you modifying
your
	> ECM/PROM?
	> > > Do you think knocking you initial timing back could help your
	knocking?
	> > I'm
	> > > running 87 octane w/9.3:1 compression (aluminum heads) with no
knocks
	so
	> > > far.  What mods(if any more) do you have planned for the
future?
	> > >
	> > > Jim Brady
	> > > '87 Monte SS 383 TPI 6 speed
	> >
	> > <Snip>
	> >
	>
	>
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