I just installed the Silverline 304 4" turbo back (dual) exhaust system on my 06, 6.0 (cat delete). Now here lies the strange issue that I am experiencing, the truck has less power, I am running the edge platinum juice with attitude and the truck takes longer to spool up and it is definetly sluggish with the new exhaust. The stock downpipe was 3" and the Silverline is 3.5 inch. Could this be the problem (less backpressure), or can it be that the computer needs to re-learn the changes to the exhaust? One last question, will re-installing the cat bring it back to where it was. My intent was to gain lower exhaust temps. by installing the larger exhaust, I wasn't really concerned about more power but, I certainly am not willing to accept less power after paying premium dollar for a nice system. I am new to the forum and appreciate any and all help that is offered.
Thanks.
Randall
Thanks.
Randall