Anyone else notice a drop in their gas mileage with this installed? Also, has anyone tried leaving the fairing off, to see if it affects mileage?
1251739
Mine is on a 2001 Jeep Cherokee and it never got good gas mileage without the rack. Have the fairing on and have not noticed any drop in mpg. However I only drive this jeep off road for fun and not daily.
1251740
The fastest i drive on my way to work, if 50mph, and I have not noticed a drop at all. At higher speeds, I am sure you would notice 1-2mpg drop. The fairing is "supposed" to help minimize the disruption in aerodynamics. The best bet, is to mount the whole assembly as low as possible.
1251741
Slightly. Maybe a mile/gallon in my '08 Tacoma, with a load of firewood in the basket. But that's to be expected. I keep the fairing off as having it on is even worse for gas mileage, says the guy at the used Yakima equipment shop in town. With an empty basket, loss in fuel efficiency hasn't been noticeable.
1251742
I noticed no major difference in gas mileage. In my opinion taking the faring off would increase the wind resistance. The larger factor would be the load in the rack.
1251743
I have a spare tire mounted in mine, so if I have had any drop in mileage I would attribute it to that. I think if there is any drop it is due to what is being carried in the rack and that causing the drag. The rack itself seems like it would cause minimal drag.
1251744
depending how high the items are stored in the unit, will effect the gas mileage 2 1/2 to 3 miles per gallon, the fairing helps deflect the wind. used the unit on a 3000 mile trip in june, saw a 3 mile per gallon drop from 25 to 22 mpg.
1604423
I'm guessing I've lost 1-2 mpg maximum for highway cruising, but it's hard to say for certain. I'll have to take it off for a week or two and see if there are any improvements. I positioned mine as far back as possible as to allow most the air to go over and not hit the rack directly as much. As for noise, I couldn't tell a difference, mainly because my AT tires are so loud. Good Luck.
519903
hi tammy......you would see an increase in fuel mileage but in the range of like 3-5mpg. that, along with a clean air fulter or cold air 8ntake, and making sure your tire psi is correct according to the placard on the l/f door, you should notice a decent amount
1066517
I had no issue with that. I just installed it and went for a ride. I've had it on now for 10000 miles and love it. But no issue with any engine sencers. Mike w
1414761
i set mine at .035 that is in my 347 stroker on gas you can go with a larger gap if you wish to test it if you are racing the car go to a test and tune and try different gaps. some engines like it wider some do not. also which ing. do you have i run a MSD 6al.hope this helps Bob
704806
The HP gains are minimal with just the intake. It sounds a little tougher, runs a little smoother. Once you get started on the MODS you put something on you need something to compliment it for it to work. This intake brings a lot more air in so you will need an upgrade in the exhaust, stock pipes won't let as much out. If you have updated your exhaust you will see up to 20 ponies added! Will also make you sound like a true muscle car. I did both on my RT and very happy but not satisfied. Now have the next upgrade to compliment these two upgrades! Hope that helps. Good luck. Have fun
1263639
I have an automatic and by using the 87 Octane tune I improved my mileage by about 4 or 5 mile per gallon. Plus it performs much better as far acceleration/much peppier. Also went to a larger tires and wheels re-calibrated for the new height and it corrected the speedometer. So everything I did was an improvement over stock, so I would say it would help with a standard also, but not totally sure.
939787
Installed new carburetor turned on gas and started on 2 nd pull. No adjustment needed. Did clean gas tank. Had been setting over 2 years. You could possibly have contaminated fuel. Mine worked great
668073
i would return it as mine does not do that and runs fine on either fuel! john hundley ps i dis agree with the othe answer as i do not believe that you should be a mechanic on a new item
1037533
I've got a 33/12.5 mounted on mine. Could prob mount a 40 w/no issues to be honest. Only issue I have is 2 of the mounting bolts are directly in line with the gas tank, so you will need to drop the gas tank to install those bolts. I have left them off for now due to not having a monster size spare tire and the 4 bolts that are installed seem good enough. The other minor issue is that there is a zurk fitting on top of the swing out hinge that was poorly designed as it will break off as soon as you swing open the spare tire mount. No biggie, just poorly designed. Other than that, highly impressed with the purchase. Plus it adds a receiver hitch and comes w/2 d rings. I reccomend it. I've got a 33/12.5 mounted on mine. Could prob mount a 40 w/no issues to be honest. Only issue I have is 2 of the mounting bolts are directly in line with the gas tank, so you will need to drop the gas tank to install those bolts. I have left them off for now due to not having a monster size spare tire and the 4 bolts that are installed seem good enough. The other minor issue is that there is a zurk fitting on top of the swing out hinge that was poorly designed as it will break off as soon as you swing open the spare tire mount. No biggie, just poorly designed. Other than that, highly... » Read More I've got a 33/12.5 mounted on mine. Could prob mount a 40 w/no issues to be honest. Only issue I have is 2 of the mounting bolts are directly in line with the gas tank, so you will need to drop the gas tank to install those bolts. I have left them off for now due to not having a monster size spare tire and the 4 bolts that are installed seem good enough. The other minor issue is that there is a zurk fitting on top of the swing out hinge that was poorly designed as it will break off as soon as you swing open the spare tire mount. No biggie, just poorly designed. Other than that, highly impressed with the purchase. Plus it adds a receiver hitch and comes w/2 d rings. I reccomend it. « Show Less
515498
Hey man I have an 06 evo. It took prob about 100 miles for warm idle to go back to normal. But maybe a few hundred miles for the cold start idle to go back to normal. It takes a while to relearn. Good luck! Great product, great price
2110054
None, after running it for a while, what fealt like a gain was not, dyno showed same results a a drop in performance filter. Also mileage dropped, to 25 mpg from 29 mpg. I recently returned car back to stock, power is the same, fuel economy back up. Only positive thing about this unit is price, and sound. I had the Mopar unit, prior to this, and a K&N; as well, money wise, lesson learned just buy a K&N; replacement filter and save some time and money. On a side note if you are looking for bling and nice tone from engine, then the unit is worth it.
2010833
Had very little noise - if any - from the cargo box. What little noise heard was probably from my cross bars - and that was at highway/interstate speed. Cross bars with cargo (with load) affected mpg by about 5-10%.
1667512
I drive wiyh mine all yhe time at those speeds. It has been about 9 months since I installed the top. The only issue I have is one of the side window channels unhooks partially once in a while. It is probably an incorrect adjustment on my part. Had a foot of snow on it the other day and no worries. Hope that helps your decision.
1353868
On my 2012 HD Road King, with Stage1 (Heavy Breather intake with 4" Rinehart pipes), the gas mileage improved slightly. But I down already from the estimated 42mpg to about 38-40mpg with the stage 1 kit. I noticed only an extra mile per gallon if any. But also, since the bike ended up with more low-end torque, I had a tendency of cranking the throttle up at lower RPM which is harder on gas. You won't regret the performance increase. More Torque, and much smoother throughout the power band.
1318281
Wow. That's exactly the problem I am left with. I've re-visited my install as I kept thinking that there was something I wasn't doing right. You've actually helped me! Since the original sat flush now I'll dig out the old gaskets and see if it'll seat properly and re-use them. If you find a solution do let me know. Thanks. Jean
1654327
Mines been completely perfect! I just run it stock and change my tire size and gear ratio and I get better mpg than any of the tunes, just don't try to put 1000 hp in the engine and you'll be fine.