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MAFS 

 

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 Post subject: MAFS
Posted: Sun Jul 31, 2005 12:50 am 
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Age: 46

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Ride: ef xr8

Location: Northern
NSW, Australia

Can someone tell me what size mafs are used on a AU series 1,2,3 5L windsor.Did any of them have a 70mm maf & can they be used on a 95 EFXR8.If so does somebody have a secondhand one 4 sale.

 

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Posted: Sun Jul 31, 2005 1:08 am 
Getting Side Ways
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Age: 38

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Joined: 7th Nov 2004

Ride: 320kw BA XR8

Location: Adelaide
SA, Australia

All AU's had a 70mm MAF. The plugs are different but you can use your stock electronics on the AU MAF body but this may cause it to run lean at WOT depending on what sort of power your engine has to start with. You can combat this to some extent with an adjustable fuel pressure reg.
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Posted: Sun Jul 31, 2005 1:18 am 
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Ride: ef xr8

Location: Northern
NSW, Australia

If it does run lean this problem can be fixed by altering the program in a aftermarket chip???

 

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FOR SALE;EF 5.0 auto ecu with tweecer $600
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Posted: Sun Jul 31, 2005 1:20 am 
Getting Side Ways
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Location: Adelaide
SA, Australia

Yes you could work around it with a chip by either just making WOT richer therefore canceling out the effect of the MAF or by altering the actual MAF curve in the EEC (aftermarket chip companies may or may not have this capability)
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Posted: Sun Jul 31, 2005 1:33 am 
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Age: 46

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Gallery: 9 images

Ride: ef xr8

Location: Northern
NSW, Australia

Using a Chiptorque chip,they recomended 65mm tb & 70mm maf to suit my mods
:GT40p heads,larger valves,ported & polished
:cam,intake manifold,roller rockers

 

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FOR SALE;EF 5.0 auto ecu with tweecer $600
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Posted: Sun Jul 31, 2005 1:43 am 
Getting Side Ways
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Age: 38

Posts: 1440

Joined: 7th Nov 2004

Ride: 320kw BA XR8

Location: Adelaide
SA, Australia

chooka wrote:
Using a Chiptorque chip,they recomended 65mm tb & 70mm maf to suit my mods
:GT40p heads,larger valves,ported & polished
:cam,intake manifold,roller rockers


Yes for sure, the 55mm MAF is choking your intake. May want to contact MrLandau regarding a professional mass air systems MAF's as they are calibrated correctly and flow more than the AU ones too. BTW, AU ones should go for $200-250 second hand, probably around double that for a decent aftermarket unit.
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