ErikSS wrote:The standard is just an OBD check. However, they can do a visual. I have actually had a sniff test on a basically stock Dodge Ram also. So, I think if they have reason to believe (maybe a lifted TBSS) that I have altered something they can do any of the tests they want.
OBD check can be solved with a tune Erik. Go catless or get yourself a high flow cat, do you have two or one cats btw? If you have two, you really should spend the extra buck on SLP high flow cats or another reputable brand, if you are going to stick with the cats and not upgrade your exhaust.
If you are thinking of upgrading the exhaust at some point down the road, then the cheaper bet might be to just replace them with whatever is cheap. Unless you plan on doing a cat/back exhaust upgrade. If that's the case, get the high flows, if you're doing a headers back, I'd hollow some out.
Once lifted 03 Trailblazer on 35's, gave it up to travel the USA with my family.