Not that I can tell.. I can feel some KR now and then though, sometimes it pulls like a raped ape, and others its has slight jumps up and down in power. I need a Tech 1 to see how much I'm actually getting. I started another thread about new plugs to get to hopefully take care of it a little. My 2.1 will just be around for the winter months though. Without an intercooler, I'll be getting walked by Fiesta'* in the 90* weather.
A friend of mine has an aftermarket boost gauge we're going to hook up for a day and see what kind of pressures I'm actually getting. Right now I can peg the boost gauge before it even downshifts.
1999 Jeep Grand Cherokee Limited
4.7 V8, K&N CAI, 8000k HIDs, !Muffler, Airhorns.
1992 Bonneville SSE Supercharged
160* drilled Tstat, Hi-Flow Cat, Dynomax Muffler, PVC CAI, 2.1" pulley, 100 shot.
13.9 @ 100 mph
1994 Trans Am
12.8 @ 114