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MAFLESS TUNE 

 

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 Post subject: MAFLESS TUNE
Posted: Tue Nov 23, 2010 11:56 pm 
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Hey peeps planning on putting a raptor supercharger on my ef xr8 and the kit cme wid a optonal mafless tune, was wondering wot is involved with this and how hard is it to do??
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 Post subject: Re: MAFLESS TUNE
Posted: Thu Nov 25, 2010 4:16 pm 
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You can't do a MAFless tune on Fords thankfully.
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 Post subject: Re: MAFLESS TUNE
Posted: Thu Nov 25, 2010 7:05 pm 
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pretty sure i read that raptor offer a mafless tune with their package for the ford 5.0L on the raptor site :?

can you tell us more XR9UTE? why is it not possible on fords?

I'm just curious as i wondered how it was done a few weeks ago when i was looking at the raptor site.

 

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 Post subject: Re: MAFLESS TUNE
Posted: Thu Nov 25, 2010 9:00 pm 
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I remember seeing prydey EB V8 with mafless tune on here and the other site.
Microtech ECU i think it was
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 Post subject: Re: MAFLESS TUNE
Posted: Thu Nov 25, 2010 9:30 pm 
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What he meant was that you can't do a mafless tune on the factory EB-AU V8 ecu.
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 Post subject: Re: MAFLESS TUNE
Posted: Thu Nov 25, 2010 11:44 pm 
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The MAF on Fords is the primary sensor for load and fuel calculation. It cannot be just turned off. If someone has done it they have fudged the calibration and it will make for such a dodgy state of tune it's not funny.
The reason it can be turned off on BoatAnchor s**t is because they use a slow a***(on the earlier stuff) frequency MAF which needs so much filtering they had to keep a MAP sensor on there to get a decent cal. So the first thing the boatanchor sheep do is take it off all and sundry. Stupid because the later ones got faster and in fact give a better calibration than they do when they take it off.
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 Post subject: Re: MAFLESS TUNE
Posted: Fri Nov 26, 2010 10:45 am 
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xcabbi wrote:
What he meant was that you can't do a mafless tune on the factory EB-AU V8 ecu.

Actually, you can. Cam on AFF has a TPS based tune in his 347 AU done by ChipTorque

 

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 Post subject: Re: MAFLESS TUNE
Posted: Fri Nov 26, 2010 11:18 am 
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67RCE wrote:
xcabbi wrote:
What he meant was that you can't do a mafless tune on the factory EB-AU V8 ecu.

Actually, you can. Cam on AFF has a TPS based tune in his 347 AU done by ChipTorque


Which means it's a fudged cal....you may aswell stick a carby on it!
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 Post subject: Re: MAFLESS TUNE
Posted: Fri Nov 26, 2010 11:22 am 
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How is it a fudged tune?

What are the drawbacks of fudging the tune? I thought if it was tuned then it was tuned.

Can the fuel delivery not keep up with what is happening without the maf or something?
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 Post subject: Re: MAFLESS TUNE
Posted: Fri Nov 26, 2010 11:31 am 
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The drawbacks are; there is no way to sense load. If there's no load sensing the EEC cannot know what fuel or spark is needed for a given load. Effectively resulting in 3D maps being reverted to a single curve rather like, in the case of spark, an old mechanical advance distributor.
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 Post subject: Re: MAFLESS TUNE
Posted: Fri Nov 26, 2010 11:34 am 
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well guess im just gonna have to run a maf with my supercharger kit
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 Post subject: Re: MAFLESS TUNE
Posted: Fri Nov 26, 2010 11:41 am 
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Or fit an aftermarket computer.

 

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 Post subject: Re: MAFLESS TUNE
Posted: Fri Nov 26, 2010 12:00 pm 
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Well this thing here is running a 90mm Lightning MAF and even with a half assed tune it's running pretty well.
It's a 351 with a Vortech T-trim and big a*** front mount intercooler. Mustang A9P EECIV,42's and Moates 1/4 horse.

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 Post subject: Re: MAFLESS TUNE
Posted: Fri Nov 26, 2010 12:06 pm 
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XR9UTE wrote:
The drawbacks are; there is no way to sense load. If there's no load sensing the EEC cannot know what fuel or spark is needed for a given load. Effectively resulting in 3D maps being reverted to a single curve rather like, in the case of spark, an old mechanical advance distributor.


I always wondered how this was achieved (by ChipTorque). I've never looked into trying as it's not rocket science to tune MAFs and when done right they produce great results. If you're having issues with a MAF setup, you're doing it wrong!
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 Post subject: Re: MAFLESS TUNE
Posted: Tue Feb 15, 2011 8:58 pm 
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XR9UTE wrote:
67RCE wrote:
xcabbi wrote:
What he meant was that you can't do a mafless tune on the factory EB-AU V8 ecu.

Actually, you can. Cam on AFF has a TPS based tune in his 347 AU done by ChipTorque


Which means it's a fudged cal....you may aswell stick a carby on it!



There is actually a TPS based map within all EECIV and EECV that the ECU will revert to when the MAF is removed - only a matter of tuning that map.

Not exactly a carby - this type of tuning is used on V8 supercars, only the model that the EEC uses is much much better than a Motec.
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