I agree with chillman88. If you can get better exhaust flow, than this should, in theory, give you better intake flow. I've done this on my truck. Did it make any difference? I have no idea. I drove it around quite a while with a less than good pump and injectors, so it wasn't running at it's best. There's two ways to do this. The safe way is to cut the soup bowl right above (lid upside down) the flange where it mounts to the air cleaner itself. The biggest down side to this method is that it can put metal shavings inside the oily area with lots of places for it to hide on the under side of the air cleaner lid. If you do this, clean the lid the best that you can. Use solvent, gasoline, diesel fuel, etc and try to get it surgical clean, then pray hat you got all of the shavings. The other way is to grind almost through the spot welds in the mounting flange where it's attached to the air cleaner lid. Then, holding the lid tightly, hit the soup bowl on something hard like the edge of a work bench to break it loose from what remains of the spot welds. This is the "clean" method since there should be minimal, if any metal shavings get into the oily area covered by the soup bowl. This is also the more risky method. If you're not careful, you'll cut through the air cleaner lid. If you don't grind the spot welds deep enough, you can pull the whole weld off of the lid, leaving a hole in the lid. If, for whatever reason, you do happen to put a hole in your air cleaner lid, I would recommend brazing it shut. If you do braze it, do it on top of the lid. That way if it should happen to break off, none of it will fall into your intake. Just my .02. Use it how you wish.