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Old 14 April 2012, 02:34 PM
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Pat1
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Default Ring land failure mapping question
Afternoon all,

Could someone please tell me if the 330S hatch suffers from ring land failure? or is the original 330s map sufficiently different to prevent detonation?

Cheers
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Old 14 April 2012, 02:47 PM
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tubbytommy
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Originally Posted by Pat1
Afternoon all,

Could someone please tell me if the 330S hatch suffers from ring land failure? or is the original 330s map sufficiently different to prevent detonation?

Cheers
i think the 330s has a better map, but make sure its run on 99 ron fuel.
the engine will break though its a 2.5, be it ringland or head gasket.
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Old 14 April 2012, 03:13 PM
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Originally Posted by tubbytommy
i think the 330s has a better map, but make sure its run on 99 ron fuel.
the engine will break though its a 2.5, be it ringland or head gasket.
Not strictly true seen more 330's failures than Hot dinners
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Old 14 April 2012, 03:57 PM
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Originally Posted by rob84
Not strictly true seen more 330's failures than Hot dinners
I will go with that, as Rob stated, i have rebuilt more failed 330's engines with failed ring lands than normal STI Hatches.
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Old 14 April 2012, 05:11 PM
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if that is correct, and i am not doubting it, surely the problem has to be more than just an ignition map!!
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Old 14 April 2012, 05:19 PM
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Alan Jeffery
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It's a combination of factors, and the sum of its parts.
Forged pistons, remap, problem gone.
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Old 14 April 2012, 07:44 PM
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Remapped 2 330s last month, both overboosting and hitting boost cut on the original 330s maps.
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