high flow cats
#2
Magnaflow 94106 from performance peddler or ebay. Use code clubgp or veedub whichever works for performance peddler. Remove all 4 old ones and replace with the two high flows. Place the rear O2 sensor about an inch behind the cat and you won't have any codes.
#3
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Yeah replace all 4. Get some 45 degree tubing and the high flows. Also some straight pipe to fill the gap because the high flows are much smaller than the stock ones. I am very happy with mine, got them off ebay for 60 apiece. ill post some pics of mine soon.
#7
Most hi flows aren't CARB compliant. I don't know if in Cali cutting out the back two would affect the tests or not. I know you guys have really touchy laws when it comes to that.