Maf translator?
On The Tree
Joined: Nov 2003
Posts: 115
Likes: 0
From: Kalamazoo, MI, USA
It fools the computer in thinking there is more or less air coming into the motor so that the computer delivers more or less fuel. This is used to fine tine your air fuel ratio. You get the most hp between 12.7 to 13. The higher the number the lean it is running. The lower the number the richer you are running. You would need access to a wide band sensor mounted in your exhaust to measure.
This is just a device for someone that can't tune with a laptop programming system. Some people like it because you just plug it in and set the switches. I think it is kind of a false sense of security.
Originally Posted by AKRA
It fools the computer in thinking there is more or less air coming into the motor so that the computer delivers more or less fuel. This is used to fine tine your air fuel ratio. You get the most hp between 12.7 to 13. The higher the number the lean it is running. The lower the number the richer you are running. You would need access to a wide band sensor mounted in your exhaust to measure.
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
yes, you can go that lean at WOT on an EFI Car, but most cars will make less power then with the added effect of increased cylinder temps
lean = power, but there's a limit... once you pass that limit then lean makes less power and eventually goes boom
lean = power, but there's a limit... once you pass that limit then lean makes less power and eventually goes boom
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Verdad Gallardo its usually not a linear amount either...
12.5 down below peak tq...start to lean out at peak tq till peak hp...12.8
then start to richen up again back up to red line 12.5
12.5 down below peak tq...start to lean out at peak tq till peak hp...12.8
then start to richen up again back up to red line 12.5
Last edited by soundengineer; Feb 9, 2006 at 02:48 PM.
How do you get the actual AFR for a given situation? When I take your multipliers and multiply them by the stoich ratio of 14.737 I get:
17.2 17.2....16.8 16.99
All numbers in 16-17 range.
Is that what the car is really running? There also is the table for fuel air mult but that would make it even higher.
17.2 17.2....16.8 16.99
All numbers in 16-17 range.
Is that what the car is really running? There also is the table for fuel air mult but that would make it even higher.
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
Those numbers represent fuel to add... so it's a multiplier cause its' increasing fuel.. but to do the calculations treat them as divisors
Stoich/multiplier = commanded AFR
Stoich/multiplier = commanded AFR
Last edited by horist; Feb 9, 2006 at 03:31 PM.
Thank you so much! I got this now:
12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,72 12,86 12,72 12,56 12,46 12,46 12,46
Glad to be on the same page with everyone.
Would it be bad to run numbers closer to 1 or .9? I though the factory config was over rich.
12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,56 12,72 12,86 12,72 12,56 12,46 12,46 12,46
Glad to be on the same page with everyone.
Would it be bad to run numbers closer to 1 or .9? I though the factory config was over rich.
Last edited by 2002_Z28_Six_Speed; Feb 9, 2006 at 08:29 PM. Reason: add info
Teching In
Joined: Feb 2006
Posts: 13
Likes: 0
From: SOUTHSIDE CHICAGO
I Have A Question I Bought My Car Last Year And The Guy Who Had It Before Me Had It Tuned By Speed Inc. And I Am Wondering If Once You Tune Does The Tuning Stay In The Computer Even When You Disconnect The Battery. And Is It Worth Going In A Retuning At Any Point. I Have A Diablo Programminer, And The Maf Hp In A Box, Is It Worth It?
Thanks
Thanks
