Cai question, not what you think lol

[ShadowsPapa]

I definitely see better mpgs after 2 weeks. Butt dyno? Sure lol

which do u recommend @ShadowsPapa?

They are a waste unless you like the sound.
There isn't any way the factory setup is so restrictive as to make a visible difference in mpg. With Stellantis struggling to meet CAFE numbers and paying millions in fines because they can't make those numbers - if they could make simple changes and get any more mpg, they'd be all over it.
A 200 CID engine (the 3.6 is 200 cid) needs very little air at below 5,000 RPM levels.
At below 3,000 RPM it's running the intake valves in low lift mode meaning even lower air consumption to prevent pumping losses at low RPM.
One could put a vacuum gauge in the mix and watch things as you drive normally, mash it, heavy torque requirements and so on. I would suspect that at normal driving RPM - there's not a vacuum there unless your filter is getting dirty.

I get mpg numbers all over the place - sometimes a tank is down around 18.5, sometimes it's at 20.x, sometimes it settles in at around 19. Varies with the weather and where I drive and more.

You'd need to compare after hitting about 10,000-15,000 miles on the speedometer as some of these keep climbing in mpg normally until about that point. Mine has gained mpg with the humid spring air - no other changes, same tank of gas.

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[starrskream]

They are a waste unless you like the sound.
There isn't any way the factory setup is so restrictive as to make a visible difference in mpg. With Stellantis struggling to meet CAFE numbers and paying millions in fines because they can't make those numbers - if they could make simple changes and get any more mpg, they'd be all over it.
A 200 CID engine (the 3.6 is 200 cid) needs very little air at below 5,000 RPM levels.
At below 3,000 RPM it's running the intake valves in low lift mode meaning even lower air consumption to prevent pumping losses at low RPM.
One could put a vacuum gauge in the mix and watch things as you drive normally, mash it, heavy torque requirements and so on. I would suspect that at normal driving RPM - there's not a vacuum there unless your filter is getting dirty.

I get mpg numbers all over the place - sometimes a tank is down around 18.5, sometimes it's at 20.x, sometimes it settles in at around 19. Varies with the weather and where I drive and more.

You'd need to compare after hitting about 10,000-15,000 miles on the speedometer as some of these keep climbing in mpg normally until about that point. Mine has gained mpg with the humid spring air - no other changes, same tank of gas.

that’s sort of why I just want a tube. Get that slight growl. I may just see if a local shop can mandrel bend me a tube and I will re- use the stock rubber boots. Paint the tube black and call it good.
For the sake of humor, I saw online rough country makes throttle body spacers lmao. That’s funny.