I'm just wondering if it would be safe to use my stock downpipe for emissions I'm on a pro tune for e85 with a 16g turbo and 1000cc injectors and the only map I have is the e85 pro tune map our emissions place does a sniffer test and takes the car up to highway speeds 60mph while performing the sniffer test and its almost inevitable that its going to see boost while the perform a sniffer test. I did some research last night and found that a hi-flow cat while on e85 should pass just fine I only have stock dp right now tho.
Here in colorado they test Hydrocarbons, Carbon Dioxide and Nitrogen Oxide I'm a little skeptical to run the stock down pipe while they perform the sniffer test at 60mph.
Im unsure how safe it would be to run your car on the current tune with ANY cat added to it... even if it's high flow... I'm not saying it's going to blow up as soon as you get into boost or anything, but I wouldnt risk it.
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