Post up your cold air intakes and experience? Looking for better mpg

[ShadowsPapa]

I just cant get over my mpg difference between my 20’ GPEC2 vs my 22’ GPEC5 3.6. Both similar lifts, steel bumpers with same winch, both running the same tonneau covers, 20’ jeep intake vs 22’ mishimoto and both with 2.5” and 3” straight catbacks. I was over 20mpg on my 20’ vs 16-17mpg on my 22’. Yes my Mojave has 4.10’s vs. Sport 3.73 but that should help with 35” tires. Its a head scratcher for me. Same exact driving, nothings changed.

Weight matters. Mojave is heavier.
Similar lifts - or sitting at the exact same height?
Width will matter some for frontage - the exposure of the fronts of the front tires, etc.
Tire weight and size matter as well.

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[Courtsm3]

Weight matters. Mojave is heavier.
Similar lifts - or sitting at the exact same height?
Width will matter some for frontage - the exposure of the fronts of the front tires, etc.
Tire weight and size matter as well.

Mojave is heavier yes but it cant be by much, its no Rubicon. Tires are 4lbs heavier per tire but my front bumper is 25lbs or more lighter currently. Im just having a hard time with the mpg change. 1 or 2mpg ok, but its like 3-4 different. I even reset my mpg while back, same. Sitting at just shy of 17mpg. Lifts are nearly identical, 1”f .75”r vs 1.5”f .75” on my 20’. Actually take offs from my last JT. I think the tuning is different, my 22’ does feel peppier but that could be the 4.10s.

 

[ShadowsPapa]

Mojave is heavier yes but it cant be by much, its no Rubicon. Tires are 4lbs heavier per tire but my front bumper is 25lbs or more lighter currently. Im just having a hard time with the mpg change. 1 or 2mpg ok, but its like 3-4 different. I even reset my mpg while back, same. Sitting at just shy of 17mpg. Lifts are nearly identical, 1”f .75”r vs 1.5”f .75” on my 20’. Actually take offs from my last JT. I think the tuning is different, my 22’ does feel peppier but that could be the 4.10s.

How many miles? My 2020 didn't do great until about 7,000 miles then the MPG went up noticeably.

 

[Courtsm3]

9500km. So 6000 ish miles

 

[MyJeepShawn]

FWIW, I had a Volant CAI on order…3 months on back order. I cancelled my order and picked up a k&N box\tube setup with a Donaldson filter.

My mpg’s have not gone up or down so far. About 500 miles on the setup. 6mt with 4.10’s and 285/75’s. Getting an average of 19.1 city and 23 highway. will tell you it is loud AF!!!

wanting to see what it does when the temp drops outside.

 

[skindata]

Same for me and the Injen one I installed. No changes in MPG. Mix of 75mph/60mph/45mph driving to and from work, averaging about 17.3mpg from full to empty.

 

[Lunentucker]

Thanks! The video does not do it justice, it is pretty loud when you get on it. Cruising speed is normal which is what I was hoping for.

Are you running all stock exhaust with no deletes?

 

[skindata]

Are you running all stock exhaust with no deletes?

Yep, all stock exhaust. It’s pretty damn loud when you get on it, which I’m happy about for two reasons. The first is, now I don’t have to go cut the exhaust off and mess with anything. The second is it makes driving a stick more fun because not only does it sound good, you can actually hear where you’re at RPM wise if you got music on or a lot of wind noise.

 

[cecaa850]

You guys just don't know how to drive. Lol. Always drive downhill with the wind at your back.

 

[suspension]

So does anyone actually own a cold air and have first hand experience??? I tried scrolling but got more info about tonnoue covers

 

[ShadowsPapa]

So does anyone actually own a cold air and have first hand experience??? I tried scrolling but got more info about tonnoue covers

They are all about sound, not mpg. These aren't race trucks. They already have cold air going in via an opening in the grill area anyway. Don't waste your money. Many, many posts and threads about these, and how they can't get you better mpg.

 

[JTdiRtyD]

A CAI does not allow it to breathe better or more efficiently. Naturally aspirated engines get air from vacuum, it will only draw as much as it will draw. What it does do is it allows you to draw in cooler air.

Cooler/colder air = more dense air.
More dense air = more fuel can be added.
More fuel added = increase in power BUT at the cost of using more fuel

If.... IF the OEM air intake is restrictive and a CAI allows the engine to pull more air that still means you'll burn more fuel. Your ECU is going to see more air, or more dense air being drawn in and therefor it's going to compensate by adding more fuel to maintain proper ratios. More air, or cooler air simply means more fuel.

MPG gains from CAI are a crock of shit and a marketing ploy.

 

[kennyglm]

Looks cool . Noticed no difference

 

[ShadowsPapa]

A CAI does not allow it to breathe better or more efficiently. Naturally aspirated engines get air from vacuum, it will only draw as much as it will draw. What it does do is it allows you to draw in cooler air.

However, IF the intake system were restricted (it's not in our case, but IF...) then it could matter.
The STOCK intake draws air from outside the engine bay already, so the name, CAI is a bit misleading.
Anyone who has had their air box apart at all, and looked at how it works, would see there's a passage from the grill to the underside of the air box - cold air from ahead of the grill is forced into the air box as you drive. The rest also comes from the edge of the hood - front right corner. It's baffled to prevent hot engine bay air from getting in. So unless you cut your hood and put some sort of a scoop on it to force or ram air into that box from away from the engine bay, it's not really going to be much cooler than it already is. I've got pics of how there's an opening up front, that leads to a passage into the bottom of the air box. And - all of the bugs and debris that collects in there because I'm pulling air in from the grill and front corner and edge of the hood. Look at the foam seals - these are already pulling in cooler air.
Using JSCAN you can even monitor the temperature of the air going in - it's not hot at all.

With the extreme pressure for more mpg, the CAFE rules and the heavy fines Stellantic/FCA already pays for not meeting the "rules" - if it was as simple as changing an air intake - I'd expect FCA would have pounced on it already.

 

[NC_Overland]

However, IF the intake system were restricted (it's not in our case, but IF...) then it could matter.
The STOCK intake draws air from outside the engine bay already, so the name, CAI is a bit misleading.
Anyone who has had their air box apart at all, and looked at how it works, would see there's a passage from the grill to the underside of the air box - cold air from ahead of the grill is forced into the air box as you drive. The rest also comes from the edge of the hood - front right corner. It's baffled to prevent hot engine bay air from getting in. So unless you cut your hood and put some sort of a scoop on it to force or ram air into that box from away from the engine bay, it's not really going to be much cooler than it already is. I've got pics of how there's an opening up front, that leads to a passage into the bottom of the air box. And - all of the bugs and debris that collects in there because I'm pulling air in from the grill and front corner and edge of the hood. Look at the foam seals - these are already pulling in cooler air.
Using JSCAN you can even monitor the temperature of the air going in - it's not hot at all.

With the extreme pressure for more mpg, the CAFE rules and the heavy fines Stellantic/FCA already pays for not meeting the "rules" - if it was as simple as changing an air intake - I'd expect FCA would have pounced on it already.

I knew that there was a lower intake on the side. What I didn’t realize was how loud the intake was when you have the fender liner off. It surprised me when I started my jeep to pull it in the garage for the night when I was in the middle of working on it. When I replaced the bumpers and added lights and a winch I pulled my damage fender liner off and didn’t replace it with a new one till I was done. I’m not sure how much it helped with the winch wiring, but it certainly didn’t hurt.

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