Did the Gotts intake mod yesterday and have about 80 miles on it now. I can definitely feel better throttle response and better acceleration but it sounds like it mellowed out my exhaust a little, is this my imagination? Anyway, my gas mileage looks like it fell on its face, terrible, anyone else run into these issues?

I have a 2001 5.4 SCrew, with two rear cats removed and a Gibson Supertruck Catback S.S. exhaust. I also have a Edge CTS, using level 3 canned tune.

Anything here I'm doing wrong?

Thanks, Rick

 

How did you check your mileage?

 

I actually was wrong on the mileage, I forgot that I had disconected the battery when I did the intake mod, and had about 15 miles on that tank prior to the mod. Lol had me worried though. I can usually get about 90 miles to the first 1/4 tank and only had about 80 on.

Do you think I would benefit from removing the other two cats, or will this pass the threshold of being too loud with the Gibson Supertruck, removing the first two definitely improved the tone a lot?

Also am I going to start running into problems running the canned level 3 on my Edge CTS or am I still sitting ok with my few mods?

Thanks, Rick

 

Removing the cats will increase the sound level significantly. I run no cats and love it. I would not go any other way, but this is my taste...