Has anyone else that had removed there cat noticed a mpg drop...I seemed to have lost about 3-4 mpg since i installed my delete pipe. Or is there somthing that could be wrong with my truck?!?!?

 

I did that to mine, but as far as mileage it stayed the same. This may sound stupid, but are you getting on it more to hear the exhaust.

 

I've heard of some say they lost 1-2 mpg when removing the cat but not 3-4 mpg . BTW when was the last time you changed your fuel and air filter?

 

When I removed mine, I notice less low end. So I would say I was getting less MPGs. The very next week, I put on a Aeroturbine muffler in its place which seemed to bring things back up to stock. Also adding the rotteck timing sensor help a little as well. Before you go putting more money into the truck, try doing the Tone Ring Mod (TRM) to see if it brings back your MPGs. Its free for about 40min of work. That way you have have your MPGs & nice sounding exhaust at the same time

 

can you tell me more about that...the rotteck timing sensor and the tone ring mod...what do they do?

 

Look at this thread, tells you how to do it and what you achieve by doing this simple mod. Here it is

https://www.dieseltruckresource.com/...d.php?t=240075