by Gipsy on Sun, 03 May 2020 6:54 +0000
My last rego check the mechanic challenged me on my 3" exhaust saying it had the cat bypassed (which it doesn't) so I told him if he wanted to open the system up to see he would be up for the cost of a new system! He quickly declined!
Unless they check the exhaust gas I'm not sure they can detect it but if they do you'll be done! On the other hand, the op asked about a completely through flow system which would be obvious that it was not ok. In nsw I would think the next rego inspection will prove one way or another.
Cheers Gipsy
although I'm sure somebody will challenge that
even Einstein wasn't certain of his theories.
My 2013 auto D4D DC SR5, prefilter, 3" exhaust and Chip with egt probe, stock SR5 rims with Toyo Open Country AT2 265/65R/17's