i was curious what's the most boost or hp/tq you guys have produced using the erst exh. manifold

there has yet to be a person in the usa (that i know of) to complete the combustion chamber on our us-spec cvh's.. they are setup from the factory with the lean-burn setup, looks like a D
this picture illustrates the D shaped, lean-burn cc better (also has an intake valve seat drop issue, but alas just look at the cc shape


With the 1.9 block and 2.0spi head, running 18psi on a vj11 hybrid, with no engine management just fuel upgrades, with the leanburn cc we have seen 212whp and 263ftlbs with stock, restrictive 1 7/8" exhaust as well.. (well, jeff did )

Here's a shot of our pistons

I think they will do fine.. once we release more power-compression to the part of the piston that is hidden from the added alluminum in the head (or alluminum that wasnt milled out when they designed it) it should produce considerably more power.. which is the reasoning why I think we havent seen much better numbers with our stroked-stock setup, bigger displacement.. what do you guys think

this is your head setup (well, DazC's )


Here's another shot of our head (this one is the 2.0spi combustion chamber)


Thanks to Jeff for illustrations