the right way to get a car to pass driveclean without cats is:
You can have a midpipe section that's removable to make it easier for yourself.
BTW high flow cats cause very little backpressure and most people can run cats just fine, they just choose not to because they're stupid.
I run a canadian led kit & hid kit company, if you have any questions about led headlights or hid kits in canada or would like to check out our products please contact me here: http://absolutehid.ca
2002 TiAg M3 6mt
deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 220M 19's, Michelin Supersports
2006 YZF-R6, bunch of go-fast stuff