i got 07 yukon

[07 yukon]

i got a 07 yukon with 5.3 with dot delet stage 2 1/2 cam run good but smell a lot gas from exh with no cat long tube header any help???

[obthomas]

i got a 07 yukon with 5.3 with dot delet stage 2 1/2 cam run good but smell a lot gas from exh with no cat long tube header any help???

You need to attach your tune and a scan of the problem area or some on here will chew you a$$. The tune and scan are necessary if you want help.