Quote:
Originally Posted by Arthur Dalton
On a 104 HFM/SFI , if you DON'T feel the Runners change length and the cam advance , THEN there is something WRONG..this is a Performance power-plant, and when Engine Management calls for the power/load intake runner matching and cam valve advance mapping , it is a noticable change ...don't compare the power/torque range habits of a 104 to a 103 .... 104 HFM/SFI is a full electronic, distributorless, high performance engine and has nothing in common with a 103 engine.
They are light years apart.
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Thanks Arthur, I feel much better. Like I said, it is smooth as glass now. It just seems to have a performance notch around 3000 RPM where a sort of turbo boost kicks in. After researching more of the technical aspects of the M104, this now makes sense. However, though primitive in comparison, I still love the M103. You are correct, though - they are light years apart.