M20b25 mpg?

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VoodooX
E30 Zone Newbie
E30 Zone Newbie
Posts: 67
Joined: Tue Oct 19, 2010 11:00 pm
Location: Berkshire

Tue Jan 03, 2012 10:30 am

Yes i get around 27mpg according to the obc. It was running rich but after clearing out the throttle body its rnuunig nice and smooth.
BMW 1989 e30 325i 4 door - auto - Retired
BMW 1985 e30 320i 2 door - manual - Retired
Speedtouch
Old Skooler
Old Skooler
Posts: 14070
Joined: Tue Feb 14, 2006 11:00 pm
Location: Canterbury

Tue Jan 03, 2012 5:14 pm

Kieran_n22 wrote:
hongkongfuey wrote:The other thing i was going to say was, ive fitted an electric fan , ill probably be told that it has nothing to do with mpg, but it only comes on when its needed, doesnt put a strain on the water pump in any way. And in traffic you cant feel the effects unlike a viscous which can be heard and felt
How can you get rid of the viscous fan!?
It unbolts from the water pump pulley does it not?

You then just need to replace the bolts with shorter ones if necessary, and fit an electric fan instead.
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
Kieran_n22
E30 Zone Regular
E30 Zone Regular
Posts: 679
Joined: Mon Aug 30, 2010 11:00 pm
Location: North London

Tue Jan 03, 2012 5:25 pm

Speedtouch wrote:
Kieran_n22 wrote:
hongkongfuey wrote:The other thing i was going to say was, ive fitted an electric fan , ill probably be told that it has nothing to do with mpg, but it only comes on when its needed, doesnt put a strain on the water pump in any way. And in traffic you cant feel the effects unlike a viscous which can be heard and felt
How can you get rid of the viscous fan!?
It unbolts from the water pump pulley does it not?

You then just need to replace the bolts with shorter ones if necessary, and fit an electric fan instead.
I know but why would you do that! The propellor sound is lovely!
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Speedtouch
Old Skooler
Old Skooler
Posts: 14070
Joined: Tue Feb 14, 2006 11:00 pm
Location: Canterbury

Tue Jan 03, 2012 5:29 pm

Well, if you're chasing every last mpg, an electric fan can save some. As can folding down the rear seats! :wink:
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
Kieran_n22
E30 Zone Regular
E30 Zone Regular
Posts: 679
Joined: Mon Aug 30, 2010 11:00 pm
Location: North London

Tue Jan 03, 2012 5:32 pm

I understand that but to be fair when buying an E30 and picking an M20 you should know what to expect...
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Speedtouch
Old Skooler
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Posts: 14070
Joined: Tue Feb 14, 2006 11:00 pm
Location: Canterbury

Tue Jan 03, 2012 5:50 pm

Agreed - there's more to life than mpg! :)
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
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