Hey guys, im in need of some desperate help. Basically my truck has no cat, the FPR shim, and a flip chip. Ive heard of diesels passing with no cat no problem before, however mine failed the opacity test. the first time around it failed by .7%. The fail limit is 20%. This is on the stock tune. Well i checked the FPR and sure enough it had a BB, so i pulled it out, thinking it would help me jump that margin and pass. WRONG. i just got back from the place, my truck read a 46.6% opacity.
What im asking is, since this truck has done the opposite of what i would expect, would it pass with the BB back in and the chip on?? Im not new to automotive, but im new to diesels. I have to figure this out ASAP, but i cant afford a cat.
What im asking is, since this truck has done the opposite of what i would expect, would it pass with the BB back in and the chip on?? Im not new to automotive, but im new to diesels. I have to figure this out ASAP, but i cant afford a cat.