Maf or Mafless
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benk
- Posts: 189
- Joined: Mon Apr 12, 2010 2:58 am
- cars: VN V6 Commodore
Maf or Mafless
Have heard a lot of people talk about going mafless on modified cars and was wondering what the advantages/disadvantages between running with or without a MAF sensor?
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Holden202T
- Posts: 10435
- Joined: Sat Feb 28, 2009 11:05 am
- Location: Tenambit, NSW
Re: Maf or Mafless
well i've never gone mafless as such but i have run an 808 computer on an ecotec 
that aside, i can tell you this:
mafless:
+ easier to tune
+ good if you have maxed out the MAF
- not quiet as good a tune but does work ok
maf:
+ can handle alot of changes before needing to be re-tuned
+ more control over fuelling
- can be restrictive to engine performance
- alot harder to tune than a map based system
- alot of people talk negatively about them due to previous point.
at the end of the day im certainly no pro on maf or mafless but thats my experience!
that aside, i can tell you this:
mafless:
+ easier to tune
+ good if you have maxed out the MAF
- not quiet as good a tune but does work ok
maf:
+ can handle alot of changes before needing to be re-tuned
+ more control over fuelling
- can be restrictive to engine performance
- alot harder to tune than a map based system
- alot of people talk negatively about them due to previous point.
at the end of the day im certainly no pro on maf or mafless but thats my experience!
No matter what the question is, the answer is always more horsepower! 
Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
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yoda69
- Posts: 1226
- Joined: Sun Mar 15, 2009 12:20 am
- cars: 2004 VYII Acclaim Wagon V6 Auto LPG/Petrol
2004 VYII Berlina sedan V6 Auto
2005 VZ Monaro CV8 manual - Location: Geelong, VIC
Re: Maf or Mafless
I'll second Holden 202's reply.
The MAF tune is a lot more more complex, but if you can get your head around it and a decent xdf it is really good.
Biggest difference I've seen, is that with MAF many tables interact with each other, especially for things like Power Enrichment, you can make a change that fixes one problem but creates 2 new ones.
Additionally, for commodre based Delco's, wityh the introduction of the MAF they also went to sequential injection. Nothing in it power wise, but improvements at idle.
Whichever direction you go, there are plenty of people on this forum who will try and help out.
Good Luck,
yoda69
The MAF tune is a lot more more complex, but if you can get your head around it and a decent xdf it is really good.
Biggest difference I've seen, is that with MAF many tables interact with each other, especially for things like Power Enrichment, you can make a change that fixes one problem but creates 2 new ones.
Additionally, for commodre based Delco's, wityh the introduction of the MAF they also went to sequential injection. Nothing in it power wise, but improvements at idle.
Whichever direction you go, there are plenty of people on this forum who will try and help out.
Good Luck,
yoda69