Bosch MAF sensor question

Mike Rolica mrolica at meridian-mag.com
Tue Oct 19 19:12:08 GMT 1999


Could you not reprogram the prom to accept the frequency instead of voltage?
Would this be hard or just time consuming?  I'll give it a try if someone
has some input on this.
Mike Rolica
EXT. 260
 :-)


	-----Original Message-----
	From:	EFISYSTEMS at aol.com [SMTP:EFISYSTEMS at aol.com]
	Sent:	Tuesday, October 19, 1999 2:59 PM
	To:	gmecm at efi332.eng.ohio-state.edu
	Subject:	Re: Bosch MAF sensor question

	Hi Mark,
	         I have the transfer function for the 99 chevs....it goes
all the way 
	to 453 grams..it's output is in hertz though and would require some
sort of 
	frequency to voltage convertor.....Do you have the transfer function
for the 
	bosch???or does someone else????? also for a porsche ????  A quick
note...Gm 
	is selling these 99 MAF meters for under $50.00(I think its a
mistake so I 
	bought a bunch) has built in air temp sensor too....ttyl
	-Carl Summers

	In a message dated 10/18/99 10:34:01 PM Pacific Daylight Time, 
	romans at pacbell.net writes:

	<< Subj:     Bosch MAF sensor question
	 Date:  10/18/99 10:34:01 PM Pacific Daylight Time
	 From:  romans at pacbell.net (Mark Romans)
	 Sender:    owner-gmecm at esl.eng.ohio-state.edu
	 Reply-to:  gmecm at efi332.eng.ohio-state.edu
	 To:    gmecm at efi332.eng.ohio-state.edu
	 
	 
	 Hello All:  What I hope is a quick question.  The L98 MAF reads to
about 255
	 grams/sec.
	 My engine being normally aspirated hits this level of flow at about
	 4600-4700 rpm's.  Is there a way to make a software patch that
allows flow
	 to be read to double that?  Is there a maf that will read more?  I
seem to
	 remember comment about a Bosch Porsche 928 MAF sensor.  I also
remember
	 reading somewhere about a maf doubler for the GN 3.8 Turbo engine.
	 
	  I have a friend who's turbo 406 is hitting the 255 grams/sec at
about 3000
	 rpm's at 50% throttle and 2500 rpms and 50% more throttle to go!
	 
	 Mark
	  >>



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