IR vs. Plenum?, Bonafide dyno tests anyone? Options

[jhadler]

Hey all,

I realise that this may have been hammered at before, but I was currious if, on a stock 2.0L, there was any distinct advantage of going to IR throttles over the stock plenum (or some other single throttle plenum).

I know that the stock cam will limit the amount of air the engine can ingest, and that IR throttles will definitely NOT be the limiting factor on the top end, but with tall manifolds, and IR throttles, can a stock 2.0L run better than it could with the stock intake plenum. Assuming that both are running a programable fuel injection system that has been optimized.

Thought? Experiences? Test data? Dyno results? (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

-Josh2

[DNHunt]

Josh

You say stock internals but, you didn't mention whether you would try to use D-jet or another system. I can't see D-jet working so I'm going to assume some other system.

I would have a hard time seeing much advantage with IR without internal changes. Throttle respose on the stock system is pretty good so no gain there.
I just have to believe that the cam is the primary thing holding things back.

Dave