VTCS manifold unpleasantness
if +1.5 hp at 4500 is preferable to +15 hp at 7000, then vtcs is life.
The Begi IM I have is not what they have shown on their site. It is an older product that was discontinued due to not having a good foundry to make them.
If you can wait about 5 months, we will have a better option.
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Doesn't matter. It might be possible to make a wee bit more power either way with a one-off manifold but ours will be affordable and OTS. It will be the best solution regardless your induction type.
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New page Im going to re-post this graph. It seems to me that it is very likely if you add the VCTS manifold to this mix it would very likely beat both of these slightly from say ~3500-5000 and only loose some to the flat top above ~6800-7000 rpm assuming stock head and cams. I'm leaning toward the VCTS for a CSP build as it might beat the flat top where it's needed most.











