Originally Posted by LakevilleSSEi
Did you have measurements for the LIM and head ports in that post?
Did you pick up any gain? 20% sounds like quite a bit.
Measurements on my car are posted. The combination of that porting and the massively ported TB are causing a lean condition despite the flowmatched injectors and walbro fuel pump, although it'* not as bad as it was. My gut tells me the LIM porting is not the problem, but I'm simply flowing more than the MAF can handle. When I'm running enriched early in the morning, it has insane amounts of power compared to before. It would easlily spank my 95 in these conditions.
So the jury is still out on the LIM porting, and you'll be taking the same risk as me without my final green light on it. In theory, it should help move the boost/fuel into the cylinders more efficiently. But you may also have to port your EM'* to make up for it, or you're almost certainly going to have KR. EM'* can be ported ~15% by stitch-welding the outsides first, but it takes some patience and proper technique to do that without warping the flanges.
Ultimately, a pulleyed Series 1 should benefit more from ported EM'* than from a ported LIM.
Porting/smoothing the outlet of the SC would be for reducing SC outlet temps.