Real Horsepower Gains in Jeep Wrangler with Intake and Exhaust Upgrades (Easy Bolt-Ons Only!)
After adding bigger tires and a lift kit, this 2012 Jeep Wrangler felt a little down on power. So we do some dyno testing to see if we can make real horsepower gains in our Jeep JK by adding a Delta Force intake from Flowmaster and a cat-back exhaust system from Hooker BlackHeart. Check it out and see what we found!
A few links I hope you will find helpful:
Flowmaster Delta Force intake: amzn.to/2xXmnBl
Hooker BlackHeart cat-back exhaust: amzn.to/2WrlURm
(Note that Horsepower Monster may receive a percentage from products purchased through these links, so thanks in advance for helping out the channel!)
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Probably among the greatest KZhead how to video. Not annoying like everyone else who showcases the damn box it came in for 10 min....
Thanks!
Amen. Box - not important! Nice explanation
Man I agree. Sounds like a professional tv show. I love it.
The best way to get power back after adding larger tires is a gear swap.
That’s pretty awesome gains across the power band. I think I’ll be installing a delta force air box as well, still debating on which specific exhaust to go with but the sound on yours is nice.
Sounds nice for sure! I went with flowmaster, outlaw series on mine and a banks ram air intake.
I just got the blackheart exhaust on today with an s&b intake. I'm also running the pulsar performance module and together the jeep is really snappy and wakes up the 3.6 nicely. Highway driving is much improved and in general.
Such a great video it’s nice to see actual dyno results awesome job thank you
I have a 2012 JKU sahara on 35s as well. I just (last month ) put a Cold Air intake on mine and geared it with 4.56 yukons and a superships. Made a happy change and I am looking fwd to doing the exhaust nest summer.
The exhaust definitely makes the biggest difference. I installed a Borla muffler on mine leaving the resonator, and the low end to mid range response is so much better now!
The sound difference is amazing! I really thought you were going to get more like 10 to 15 hp out of doing that. Wow.
Ecu needs adjusted. Look at the power curve. It is rough
@@kyleolin3566correct most people think intake and exhaust are enough, it’s not the ecu needs to be flashed/changed or your unlikely to see bigger gains due to the map on it. You gain horsepower and a slight increase in mpg when you do it that way. Did I take and new chip on a grand Cherokee got 12 horses and 7 lbft of torque. Was a little under a grand to have done.
Sounds amazing
red line governor factor of 108mph good info so dyno in 3rd gear cool.
I went with the K&N CAI and the American thunder cat back from Flowmaster....love the minor boost and especially the sound. I have no muffler in the old location. It now sits where the resonator used to mount
What about the 280 HP and 270 torque ? All BS ?
@@queensapphire7717 never put it on a dyno machine, but it does feel more pep at the peddle, enough the I do this combination on my other jeep and all the cars I have owned......and I hate to waste money....
Looks like you should take a look at your rear axle vent tube probably the front as well. Seems pretty tight after the lift.
thanks for the video, nicely explained and filmed! wondering if there are any insights into MPG change and emissions pre/post install?
Thank you man, good to know about this parts
Flash tune it so the vehicle knows there are larger tires/wheels. Will make it perform at the optimal levels and also get your Speedo back in line. Then consider performance parts. Just my two cents! Once I did that after 37” tires it made the jeep run as it should and had the familiar response I was used to
I did the flowmaster outlaw exhaust and banks ram air intake for my rubicon and noticed gainz
Loved it and making more power is always a good thing. The next step is to swap out your gear sets and install a ratio that will bring your engines operating range back into its torque sweet spot. Love the new diff cover by the way..
You are definitely right about a re-gear. I got the diff covers from B&M. They actually have dipsticks built into them to check gear oil levels or check for water intrusion in the diffs if you have been wheeling in creeks. Thanks for watching!
Thanks for this simple instructional video it's crazy that this showed up in my feed cuz I was just thinking I really need to figure out something for my JK the fact that it's a Rubicon and it is gutless really gets to me and there's no way it's going to be able to push 37s so thanks for this video I'm probably going to order that exhaust system and that intake right now
What gears are you running? And how much extra weight on the chassis?
Sounds good! Film work is always good. Thanks
Hey thanks! And thanks for watching!
My comments are mainly on your video. Very, very well done and clear explanations. I am impressed you were able to get the old exhaust off without having to lift the vehicle. I am waiting for a Pypes higher clearance exhaust purchased through Quadratec. Right now, I will likely do a K/N flat unit (no CAI). As one response stated, I will be regearing (through 4WP). Again, very good video. Mine is a 2020, Sport Altitude.
Cool, good luck!
Have a 13 with 155,000 miles on it and starting to loose power. The engine still runs great, probably a CAT getting plugged. Great video
Perfect timing to stumble on your video, I'm just getting ready to install a flowmaster cat back exhaust and a volant cold air intake and snorkel combo. 👍👍
Waited 8 months to get this exhaust. Installing today.
Ive owned a v6 in the past and i agree itll never sound like a v8 but i gotta say i really like the sound of this one. While not huge gains its still a gain without voiding a warranty. I did the same thing on my 2018 f-150. Did it make it fast, no. Did it make it sound 1,000x better, yes. 👍
Thanks for the video. Maybe I'll give this a try.
Thanks for watching!
This video deserves more respect
Thanks!
The stock intake on the jeep wrangler is a thing of beauty, a rare engineering example of functionality over regulation. You don't need an aftermarket intake on a wrangler, it doesn't do anything, zip, zero. It also increases your chances of sucking water into the intake manifold when you replace it. The exhaust is something that I can get behind though, but you need to remove the catalytic converters and flash the ECU. If you're looking to stay legal, you'll need a custom exhaust to accommodate the lift you chose, if you're hard-core.
Interesting as K&N has a CAI snorkel kit that puts the air intake above the windshield. You must be driving totally submerged
@@twoallameyeah… actually… in Alaska we’re routinely finding water crossings that threaten a stock intake.
I have the Mopar intake system for my 2013 jk Rubicon works just fine.Also added throttle body spacer and also made slight difference
Excellent video, Awesome to see dyno results I can't wait to do mine
The power will be even better after ~500km. ECU will change the settings.
ecu will change air fuel ratio pretty much instantly
The auto transmission will learn and change as well.
The exhaust sounds really nice.
Cat Back. Yes. Dont like thought of a "cold" air intake though, no more water fording... Gear it.
I also went with the Hooker Black Heart. I have used other brands on other Jeeps and Hooker is BY FAR the best!
Nothing beats a good sounding Hooker!!
Gearing swap in the axles helps a ton too. Coworker of mine put 50” with lift on his after gearing swap it was like stock again with the mpg’s was getting before. Also good to checked the fluids down there too
Ty for the info and dynos
Dude great video
Thanks! And thanks for watching!
Sounds sweet
JScan app and OBD2 is the cheapest way to update the ecu with new mod tyre size. It makes an amazing difference. Maps power and shifts brilliantly. Gets rid of her chatter. I was completely stunned when I did mine. Tip go 1 higher there size than what you fitted.
I did the same thing with my 2014 4 door wrangler except I used a K&N aircharger intake system and a magnaflow performance catback exhaust. It definitely increased acceleration and better high speed highway driving. not sure exactly how much horsepower increase though. And definitely sounds a lot more "manly" ; )
The peak HP gains are cool and all... but when you look at the graphs you have those numbers faster down low were it counts, especially if you are going off road.
I’m hailing from Florida but originally from Greensboro and charlotte nc! Good to hear from another keeper from nc! I’m like you I always drive with the top down!!!
Cool. Thanks for the comment, and thanks for watching!
I have a 1992 renegade that came with a cold air intake and it’s a blast to drive especially in the summer when my Jeep permanently becomes topless until fall
You mean temporarily than.
Thanks for the video. Good stuff. What was the cost per horsepower break down?
Lesneski is the man.
I’m from NC! I have a Jeep jk 2014. 2.5 with 35s
Love the sound .. 👍Is there any difference in mileage after installation?
Great review and jeep looking good. but 7hp starting around 3200 rpm? I guess if you drive up in that range it is helpful, but im generally 3k and down. I am wondering if a snorkel wouldnt do a better job as a cold air intake. i like the exhaust tucked up like that too.
Greetings from a fellow NC Jeeper... That exhaust sound though!! 🤘🤘 They make those for the TJ models?
Great video
Thanks!
new cool air & exhaust dyno 7 & 8 hp & torque bump cool across range no reprogramming from stock. God not worth it on good muffler but when replacing sure go bigger. The freeier cold air seems no brainer esp in hot climates
My 02' GC 4.7ho Pushes 275-300HP with a 231amc transfer case with 2wd option, magnaflow performance exhaust. Even with a 6 in lift kit she rips down the road like a real jeep should.
Pick a horsepower number. There is no she does between this and that. Come on now.
@@dirtysouthtv2209 came stock with 275hp I already put in over 1K$ in HP mods, def pushing at least 300Hp fuck a dyno lol
@@dirtysouthtv2209 wheres your jeep🤔 lol
I like this video get Straight to the point
Might want to try and re gear it
I know this is kind of an old video but I was wondering how you like the wheels on your Jeep I just got them on mine and then found out their cast and I was worried about cracking and potentially off-road have you had any issues?
I think it sounds great 👍
Thanks!
I have a 2016 with manual transmission and notice the low torque at lower rpm around 1500 to 2000. It looks like the bottom end where the 3.6 really needs it saw a healthy boost, but it’s hard to see the details in the video. How was the drive ability improved down low?
man, that is very nice, im looking to do that as well after bumping up to 33s. so thats a dry filter, not one you have to lube up right? is it cleanable?
Did you tune it as well? Surely that would have gotten bigger gains than the intake and exhaust alone.
Do it Tay!
Smart video, I haven't done the air box mod because of possible water intake when fording. This video should be a template for all wannabe Jeep videographers.
I am planning both of these upgrades, along with a Superchip. Toward the end you mentioned the increase happed above 3200 RPM, is it possible to get pictures of the graph? Mostly my Jeep operates between 2k and 3500 RPM, so I am interested in real world gains on the lower end of the scale.
I noticed your dif plate was different in the upgrade video of your exhaust. Did you re-gear as well?
Snorkel +10hp 12Gw light bar +15hp Hood mounted high lift jack +5hp Rooftop tent year round +8hp Angry Eyes +infinity
One thing that gets me with these after market intake kits is the lack of accumulators. Those big blanked off tubes on the stock intake assembly are there to hold clean air. When you step on the throttle hard, this air is drawn into the motor to give a better instant torque numbers. They have no effect on average number though. So think of it this way, those are there for taking off from stop lights and sighs.
Interesting. I thought those were to designed to reduce intake noise.
Had the same problem with my 2005 jeep wrangler unlimited. 4inch suspension lift with 33s. Put in cold air intake and exhaust nothing worked. Then I regeared it. Put in 4.56 gears and the power came back. Guys make sure you regear it once those big tires come on.
Did you regear? The rear differential cover is different b4 you got the CAI and exhaust.
Did it also improve your mpg and how much of a difference did you feel taking off did it not feel as sluggish as before
Changed your diff cover too, I see.
What gears you are running with those new big tires? They make a tool to get those damn exhaust donuts off too. Also running a larger aftermarket throttle body would help with more air with that intake.
You can't never go wrong with those power add on's but☝️ if you want your Jeep to get back to how it felt with stock tires you might consider changing your Ring & pinion and a good high performance clutch. Nice Jeep btw.👍🏽🇺🇸
A re-gear would definitely help. Thanks for watching!
@@TheHorsepowerMonster Thank you for sharing.👍🏽🇺🇸
Be interesting to see what hp the intake made. Also the dyno pull would be interesting with real world conditions. Hood closed.
Any plans to tune it? And how did you go since 2011/12 with out doing any mods to it😳 lol good work!
2011 did not have the 3.6 motor. only the 3.8. it was not until 2012 did jeep come out with the 3.6 motor for the wranglers. :)
It does mean a huge difference when you know big tires and rims my brother his is stock and I have a big lift and tires and rims and I has a cold air intake and headers but still want more power I thought about seeing if a tuner or chip would make a difference but with the big heavy bumpers and roof rack add more weight but I'd love to just put a v8 in it but has to be ways to pull more power out the v6
IMPRESSED! NICE GROWL BUBBA, GOOD WORK & VIDEO!
For future reference they make pliers to pull those exhaust hangers. You'll never fight them again
I think more gains could have been done by re-gearing, I’d be curious what the numbers of that would be. Love your content!
Dyno tuning is done in your 1:1 gear ratio
@@djdiheheidifhdhdje261 4gear, correct. But there is the final drive ratio in your differential that has a big effect.
@@djdiheheidifhdhdje261 he’s talking about rear differential. 35’s need a 4.10 ratio or 4.56. Stock is 3.20. The gears spin the same with larger tires making it slower. Larger ratios are needed for bigger tires. Otherwise it’s a 25 second to 0-60.
I definitely like the sound and the horse power gain is nice as well. Not to happy with the air box. You hit water and you have water in your engine. The stock box is better at keeping water out of your engine.
How is the dreaded droning on the highway with these 2 modifications?
If you change the exhaust headers, exhaust pipe and add a air airintake. Which is the best option to do any order works
nice sound; did you notice the running temperatures go down after these installs?
No, I don't think so. But we are also making more power, so I think it just evened out. Thanks for watching.
I am serious considering buy a jeep but I am wondering about it’s reliability What year is this jeep and why did you choose manual transmission over automatic transmission
What size lift do you have and brand, also what brand of tires, your stance and look is perfect.
I dunno his but mine looks similar-ish 3.5 in lift bfg ko2s 35s planning on getting km3s 35s
With the top off you have enough air intake ;)
How about adding a throttle body spacer too?
Talk about departure angles lol check that brake line stretch! Haha
I was surprised the battery was not disconnected before adding cold air intake.
what about the gear ratio, I have 37 tires and 5.13 gears and my jeep feels powerful, and the pick up is damn fast for a jeep, your exhaust does sound nice.
2013 sport with 35" + 3" lift : I upgraded with the cheapest air intake and exhaust system for 350 CAD$. Nice sound and little more power of course. But, the big difference is in the mileage... an average of 4.5 miles/gallon increased. Don't hesitate to do these upgradres !!!
I agree totally. I' m looking for efficiency (as in an increase in MPG) more than HP and/or FPT. So....I'm going with the Rock Crusher exhaust and the AMFIB Snorkel Low Mount intake system. I'll let you know how it works out after the install,
what air intake and exhaust did you get?
2:09 ahh the clutch sound
I would advise caution with a cold air intake and offroading. I've personally seen a few suck water in causing a junked hydrolocked engine. Very well made video. Thanks for the real life numbers based on the dyno!
You think this is going off road? First step after tires would be a re-gear if it is going off road.
@@ShainAndrews lots of people offroad with bad gearing I would say most people
Stock Rubi 4.10 does just fine on 35’s, could get away with 37’s on a manual. And yeah I’d be super cautious about water crossings with an intake like that.
Love to see more JK videos!
Thanks!
Regear would have done much better, although definitely not a bolt on solution and definitely more expensive, but in the long run more beneficial.
Did you see any increase in mpg? If so, what? Thanks
Might want to check the rear brake line length..
Thoughts about the CAI and risk of water entering engine? I like the extra air flow but would be concerned about hydro lock. (I own a 14’ JK but am trying to not install a snorkel).
It sits at the same location and height as the stock air box. If you are fording deep water I don't think either would be a good idea. Otherwise, it is well protected and fairly high (directly underneath the hood and above wheel height).
The Horsepower Monster RIPP claims 10hp with their coil-over kit and they seem to have fantastic reviews on non boosted applications.
you would probably need to go farther than your seat in depth to hydro lock. (not based on any knowledge except height of intake)
hey man what gear ratio are you running for those 35s
Any thoughts on doing the PUG intake conversion. be curious to see what the Dyno tells you, I've done it on mine and it seems to increase the feel but don't have a Dyno to prove it.
Wow! I didn't know anything about that. I just burned an hour researching it on the internet. Will have to give that one some serious consideration. Thanks for the heads up!
@@TheHorsepowerMonster I found that there was some cleanup to do on the inside of the upper intake. And some slight porting of the upper manifold to give clean flow to the new lower manifold. I also installed MSD coil packs and new plugs at the same time as they were due anyway.
Shorty headers would have helped even more....Thanks man...!
Probably not on these, they only have one exhaust port/head. The header/manifold is cast into the head. A lot of manufacturers do this now.
Different gears in the back would have helped more. Plus u need to tell the ECU about ur wheels upgrade