Just changed from T2 to T25, had 63mm on T2 and gone back to 51mm on T25 just because it was easier and I had the pipes laying around FREE.
Not sure what difference it would make maybe some scientific member could give us the low-down on airflow calculations
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wacomuk
like how you have mounted your radiator, did you tack tabs on the end of your radiator or just bolt it straight on?
