M20b25 mpg?
Moderator: martauto
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
BMW 1985 e30 320i 2 door - manual - Retired
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Speedtouch
- Old Skooler

- Posts: 14070
- Joined: Tue Feb 14, 2006 11:00 pm
- Location: Canterbury
It unbolts from the water pump pulley does it not?Kieran_n22 wrote:How can you get rid of the viscous fan!?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
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
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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Kieran_n22
- E30 Zone Regular

- Posts: 679
- Joined: Mon Aug 30, 2010 11:00 pm
- Location: North London
I know but why would you do that! The propellor sound is lovely!Speedtouch wrote:It unbolts from the water pump pulley does it not?Kieran_n22 wrote:How can you get rid of the viscous fan!?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
You then just need to replace the bolts with shorter ones if necessary, and fit an electric fan instead.

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Speedtouch
- Old Skooler

- Posts: 14070
- Joined: Tue Feb 14, 2006 11:00 pm
- Location: Canterbury
Well, if you're chasing every last mpg, an electric fan can save some. As can folding down the rear seats! 
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
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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Kieran_n22
- E30 Zone Regular

- Posts: 679
- Joined: Mon Aug 30, 2010 11:00 pm
- Location: North London
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

- Posts: 14070
- Joined: Tue Feb 14, 2006 11:00 pm
- Location: Canterbury
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
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421

