I have a FMIC already on my S3 but it has 2" inlet & outlet. Will having 2" inlet/outlet make much of a difference when I go to have it mapped at R-tech? The cooler is a universal-intercoolers.com kit they have for the S3. If it will make that much of a difference I will cut the ends off and weld 2.5" 90 degree bends onto the end tanks. Or possibly even buy a core and make a cooler from scratch. If there is not much to be gained I won't bother.
Cheers in advance