excel4600c
CEG'er
No offense, you are contradicting yourself. Buy a test pipe but its a :nonono: to gut them?
Even if he did gut the main one, he would still pass emissions. We have 2 pre cats on our cars that do wonders for emissions already.
well i dont know what state hes from but in VA where im from just the precats would not help, you would have to have all three. So it would be alittle easier and safer if he bought a y pipe with a removable section and placed the test pipe in there for normal driving then when emission testing came all he has to do is replace it with the high flow cat. To me and knowing how strict some states are i wouldnt even want to test the system. so from that stand point it might cost alittle more now but it might save you alot more later. just my opinion.