M42 single coil or twin coil

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Arron_e30
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Post Mon Feb 17, 2014 12:57 am

Is the 318is single coil or twin coil?

cheers
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Brianmoooore
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Post Mon Feb 17, 2014 10:05 am

Valve springs? Road springs? Ignition?
hennared323i
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Post Mon Feb 17, 2014 10:47 am

:rolling:
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Arron_e30
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Post Mon Feb 17, 2014 1:02 pm

Ignition I take it for a aftermarket rev limiter
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Brianmoooore
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Post Mon Feb 17, 2014 1:58 pm

Four coil.
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Arron_e30
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Post Mon Feb 17, 2014 3:52 pm

Ok what rev limiter will fit then? because omex only do ones for single coil and twin coil...
age
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Post Mon Feb 17, 2014 4:25 pm

The m42 has a rev limiter. Its set at 6500rpm.
If you want to go higher just but an aftermarket chip that can make it rev to whatever limiter you want, just dont be surprised when you have valve flotation past 7000 rpm
M40 rightness if you can get to 6000rpm noone can hear your tappets
ross_jsy
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Post Mon Feb 17, 2014 5:41 pm

The standard one works fine, I wouldn't be so hell bent on this launch control either. You will never use it
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Arron_e30
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Post Mon Feb 17, 2014 6:20 pm

Thanks what chip would you recommend then?
ross_jsy
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Post Mon Feb 17, 2014 6:33 pm

Contact speedtouch on here. But there are no gains to be had on a standard m42 by raising the limiter by 500rpm.
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Brianmoooore
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Post Mon Feb 17, 2014 7:13 pm

Chips for an iS are also a bit of a minefield because of apparently non compatible software used on the production run of the iS. I.E. A 'chip' that works on one iS will give poor engine running on another iS.