I know the two can't be used together, but if I put holes in my car for the Gen 3 can I turn around and use the same holes for the TT piping in a few months if I decide to go FI?

 

Not unless you make some crazy bends and custom piping that goes from the turbo inlet to those holes. Any gains you may have made from the filter placement would be more than erased with the added restriction from all the bends. I am only seeing about 8-10 degrees higher than ambient IAT's - the intercooler provided with the kit is very efficient.

 

You're just making the existing holes a little bit bigger for the Stillen install. I'm not sure how the tubes for the GTM are routed, but it won't interfere with anything.

 

They are not compatible. Had the Gen 3 and now TT.

 

I wouldn't use the Gen 3 intakes on GTM's kit. GTM uses stainless steel piping all the way around so it's a lot more durable (Stillen uses aluminum), plus the diameter of their intake piping is a lot bigger then Stillen's to bring more air to the turbos.

 

lol.....