PortFlow uses standard size valves on the intake because flow testing revealed absolutely no benefit from a larger intake valve. When this is the case, you are always better off using the smaller valve for its slightly lighter weight.

 

Question for all you experts... What tuning requirements will be needed for this (stage 3) head?

Background: I was planning on using the Greddy eManage Ultimate, however it seems that it does NOT function on the S, at all. Greddy is working on the issue, but has no estimate for the software/hardware release. So, this new head has been sitting in my basement

 

With the increased flow through the head you'll need to add additional fuel. You can put the head on the car and run it, just keep it under 5k and no boost.

 

If you have larger intake valves with forced induction, aren't you able to cram more air in to the cylinder? I was always under the assumption that even if your flow numbers aren't affected, in boost you'll make more power with larger valves.... Thoughts?

 

Bingo! My oversized stainless steel intake valves are several grams lighter than the factory intake valves too.

 

Sideways

 

moot MOOT MOOT point not "mute".

 

Sorry, I'm at work & the spell check does not work. Probably would not catch that anyway.

 

Chris, have you come back to the S2000 side?

 

Just doing research..