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MAF on an 85.5 NA
Hi all,
So I have been working on a MAF system, grabbed it from a Ford ranger, manufacturer is Hella. Running a A/F gauge and everything is on the level. Been running the set up for nearly 5k miles with no issues. Top end power output is up and MPG is up by 3. I have had it in two set ups, one with the stock air box the other with a cone filter. no real difference between in running, but you can hear a lot more of the induction noise. My next will be installing a wideband O-2 with a adjustable fuel pressure regulator, and having a DME chip set up.        
Last edited by Golten951; 02-05-2017 at 08:01 AM.. Reason: Word corrected |
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02-04-2017, 06:24 PM
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Join Date: Sep 2011
Location: Florida
Posts: 1,949
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It is inconceivable that any hp gains you see at one point will relate across the full power range or that any mpg improvements will not be from running lean. Curious about how you tuned this.
How did you match the AFM outputs at various temperatures to the output the DME sees from that MAF? How did you reprogram the DME chip to handle the new readings it sees? Not saying it cannot be done as it definitely has been done before. It's just that generalizing and saying it works without issue and with the gains you quote is not the same as testing and making sure it is actually emulating everything correctly.
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Mike A 9TECHNIK | TRANSAXLE ÄRA 1986 944 (Street); 1986 944 (Track); 1986 951; 1989 951 (3.0L 8V); 2000 996 Cab. |
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02-05-2017, 05:58 AM
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I totally understand what you are saying, that is why it's not 100% compete. I greatly enjoy exploring options that are out there for possible upgrades for the NA. So for now I will keep working on this so it is 100% effective and can be used to its fullest.
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02-05-2017, 08:06 AM
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Location: Florida
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Quote:
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Mike A 9TECHNIK | TRANSAXLE ÄRA 1986 944 (Street); 1986 944 (Track); 1986 951; 1989 951 (3.0L 8V); 2000 996 Cab. |
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02-05-2017, 12:29 PM
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Cool, Thank you for the Information. ^_^ I will look through it.
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02-05-2017, 01:37 PM
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Join Date: Oct 2002
Location: Boulder, CO
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I dimly recall this having been tried before and I think it sorta worked for a narrow range of operational parameters, probably relying heavily on the fuel trims. It'd be interesting to see how it worked with the O2 sensor disconnected and with a wideband in place. Even some od the chip-based 951 MAF conversions from 5-10 years ago struggled with hot and humid summer days as I recall.
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1987 928S4 1992 968 cabrio 2009 957 Cayenne GTS |
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02-06-2017, 06:08 AM
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I will be making updates as I go along with this MAF. its been pretty fun so far, I really like this stuff.
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02-08-2017, 10:28 AM
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Crasinder
Gladiuse
