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Club Member
Location:
sydney
Registered:
May 2002
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Re: 7M vs 5M intake manifold
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Mon, 28 October 2002 00:32
 
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just something to note before you go changing manifolds around, I spoke to a guy who does all the flow testing at Unifilter the other day (also the owner) he was telling me that the biggest problem with the stock m series engines is the intake flow rate, which is basically caused by the fact that toyota decided to run an air filter that is no bigger than a standard two litre engines one!, in fact the MX83 panel fiter is exactly the same size as a holden barina/suzuki swift!!! I know that this is correct because my wife used to have a barina and its the same as what i used to replace hers with. the problem with changing to a bigger filter, particulalry in the case of the MX83 is that you need to make up a custom mounted bracket to bolt to the afm with a pipe to mount the filter on to. But the advantage is huge as with the right filter you can flow almost double the amount of air very easily...which as we all know = more power 
just something to consider before making major changes
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