MPG difference

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Jul 8, 2009 | 01:40 AM

#21

dreamer

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From: Surrey

Ahhh sounds likely then - ta!

Jul 8, 2009 | 03:28 AM

#22

moff

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From: Nottingham

Quote:

Originally Posted by MB,Jul 8 2009, 10:17 AM

Moff - you get natually lower boost pressure in hot weather, because the air is less dense to begin with so the compression effect is lowered. I don't think the ECU does anything other than compensate fuelling and timing accordingly - on most cars anyway.

Yeah, I doubled checked - my ECU increases boost PSI for altitude, but not hot weather.

At least a MAF is fairly cheap and easy to replace!