wayne i can see how too small of an IC would be a waste of time, and too big could cause lag,(maybe not as much as excessively long piping) but is there another reason why too big of an IC would have a negative effect. It seems to me it would only get the air cooler, if only a c ouple degrees.
I do definately understand why you would want to avoid lengthy IC piping.
One thing i think would affect the "IC mapping" would be the air piping diameter. Because the air is forced after the turbo, the restriction of air due to pipe diameter should not impair performance in the way it would in a normally aspirated motor. So there has to be a "sweet spot" where the pipe size could be small enough to lessen lag but big enough not to cause air flow restriction.
Obviously this would depend on the motor, but if you look at the diameter and capacity of the piping between the turbo and intake manifold on the 1HDT i think this says something about going to big with IC pipe diameters.
Just my thoughts, i dont have a lot of knowledge about this.
I ran a frontmount because I already had one and it was much easier for me to fit.
