NAfOcommando
Junior Member
Will removing the catalytic converter, adding a cold air intake and aftermarket exhaust help improve my mileage?
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Facts hahaIn my experience better sounding exhaust decreases my mileage cause I'm always on the skinny pedal..
Yea no,the trucks stock exhaust is a huge restriction,the log manifolds at best are a peanut port manifold,and the crushed Y-pipe leaves a whole lot to be desired,after the midpipe,the exhaust system isn't bad,but before the midpipe,it leaves a whole lot to be desired.That's why long tube headers and a decent midpipe are one of the best mods you can do to the trucks for a noticeable power gain.You can get around triggering a code when removing the cats,by doing the old school anti-fouler trick under the back 02's. I originally ran my truck around with no cats and defeated the code with anti-foulers,and also ran my wifes old 2016 5.7 Challenger and also her 2019 6.4 Challenger with no cats,both untuned,with anti-foulers. But as Paco said,the best way to increase milege is sticking with stock sized tires,and driving for milege.No.
Unless your catalytic converter is clogged, removing it will not help. Worse, removing it will trigger a P0420 DTC, and then the truck may failsafe out the PCM mapping, making you get WORSE gas mileage.
Cold air intakes are typically anything but. Atop that, K&N filters can foul out the mass air flow sensor, as they have oil in them to catch particles as part of their filtering media. Which, by the way, I wouldn't recommend them because they don't filter as well as a quality paper filter.
Newer vehicles actually have a VERY free flowing exhaust, you usually only see sound gains there.
Tim
What are you getting right now? ...Will removing the catalytic converter, adding a cold air intake and aftermarket exhaust help improve my mileage?
11 city 16 HWY. it came with the premium 20 inch wheels so it’s already higher up and less aerodynamically efficientWhat are you getting right now? ...
Yikes .. when mine was stock I was getting 13-14 city and up to 20 hwy ..... what gears ? I had 3.21s before I regeared to 4.88s with the 20x12s with 37s ....11 city 16 HWY. it came with the premium 20 inch wheels so it’s already higher up and less aerodynamically efficient
Yeah I don’t know. I’ll have to try and find out. How do I do that?Yikes .. when mine was stock I was getting 13-14 city and up to 20 hwy ..... what gears ? I had 3.21s before I regeared to 4.88s with the 20x12s with 37s ....
Leaving it in the driveway will improve your gas mileage.Will removing the catalytic converter, adding a cold air intake and aftermarket exhaust help improve my mileage?
Those upgrades CAN improve efficiency, but lets be honest-when your truck roars you will want to drive it so it ROARZ.Will removing the catalytic converter, adding a cold air intake and aftermarket exhaust help improve my mileage?
Will removing the catalytic converter, adding a cold air intake and aftermarket exhaust help improve my mileage?