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Old 01-26-2015, 08:36 PM
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Air intake upgrade needed?

hello forum,

i recently installed LT off road tires on my 2012 GC and while i am enjoying the ride, i can hardly stay in eco mode. not that it matters but other than the slightly louder ride on the streets, that's the only difference.

prior to installing the LT tires i could accelerate at a reasonable rate while staying in eco mode but now with the LT tires i really cant stay in eco mode unless im slowing down or maintaining my speed. i have to hit the gas much harder. i'm assuming its because of the lower speed rating on the tires? i have the stock intake right now and my question is if i were to upgrade my intake would it help keep me in eco mode while accelerating?

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Old 01-27-2015, 05:38 AM
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Re: Air intake upgrade needed?

Are they a different size ? Taller tires mean effective gearing change towards a higher gear. Wider tires mean increased grip - hence increased friction. Your car might be struggling to reach cruising speed as quickly as before but I do not think it is undriveable in ECO.
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Old 01-27-2015, 07:02 AM
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Re: Air intake upgrade needed?

Quote:
Originally Posted by moosewireless View Post
i'm assuming its because of the lower speed rating on the tires?
^


You won't gain any noticeable horsepower/torque from an intake.
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Old 01-27-2015, 07:45 AM
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Re: Air intake upgrade needed?

Quote:
Originally Posted by MOFSTEEL View Post
^


You won't gain any noticeable horsepower/torque from an intake.
Alight was just wishful thinking I guess. They are LT245/70R17
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Old 01-27-2015, 07:53 AM
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Re: Air intake upgrade needed?

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Old 01-27-2015, 10:50 AM
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Re: Air intake upgrade needed?

Your LT tires are not stock size, the diameter is larger, changing the final drive ratio, the same effect as taller gearing. This results in slower accelleration, the effect you are experiencing.
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Old 01-27-2015, 11:02 AM
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Re: Air intake upgrade needed?

That is stock size. The difference must be in the weight of the tires. LTs weigh much more the P-metric tires. This could make a significant decrease in MPG (along with the tread design), and minor in acceleration.
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Old 01-27-2015, 03:57 PM
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Re: Air intake upgrade needed?

Quote:
Originally Posted by MOFSTEEL View Post
^


You won't gain any noticeable horsepower/torque from an intake.
that is not very nice
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