05-30-2010, 01:46 AM
cat doesnt matter really, you may get a code from down stream o2 sensors tho as they are there to make sure its working right. ive been catless for 2 years, ya it has a smell, but i tossed my HFC in for a day last year and i felt the power loss thats how major it was. get rid of it, useless until emissions time. and buy an exhaust!
2007 ZX4 2.0l unaturally aspirated
FSwerks stage 2 Turbo kit, Cosworth Intake Manifold, 3" custom HKS turbo back
regular stage 2 @10ps : 232whp/219wtq
stage 2 plus @ 13psi: 278whp/229wtq
Stage 2 plus @15psi: 296whp/240wtq
2013 Focus ST Tuxedo Black - The daily
FSwerks stage 2 Turbo kit, Cosworth Intake Manifold, 3" custom HKS turbo back
regular stage 2 @10ps : 232whp/219wtq
stage 2 plus @ 13psi: 278whp/229wtq
Stage 2 plus @15psi: 296whp/240wtq
2013 Focus ST Tuxedo Black - The daily