gas mileage IMPROVEMENTS

[bolt]

Plugs and an ERG Valve brought a 02 from 20ish to 24/25mpgs. REALLY!

[jianco]

Just raised my Michelin tire pressure from 32 to 39 cold psi in my 2011 MDX tech. Handles WAY better and gas mileage is up 2 mpg to 24 on flat highway at 70mph, 25 at 60. Why in the world would the owners manual say keep the tires at 35 psi when the tires themselves are rated at 44 psi cold?

[DelSolMarine]

procrastinating/debating on cutting off the section from the 3rd cat to the mid muffler and replacing it with a straight 2.5 pipe. MDX would then still have 2 cats and 2 mufflers. I wonder what kind of MPG change I would see. I have not been able to find a clear before and after from anyone. This is on a 06 MDX.

I did do the Monroe Rear Shocks with the coilover springs and replaced the front control arms, and front shocks just recently. I rides greats.

MPG is reading around 17.5MPG overall. (My wife drives it)

[mowashear]

Originally Posted by jianco

Just raised my Michelin tire pressure from 32 to 39 cold psi in my 2011 MDX tech. Handles WAY better and gas mileage is up 2 mpg to 24 on flat highway at 70mph, 25 at 60. Why in the world would the owners manual say keep the tires at 35 psi when the tires themselves are rated at 44 psi cold?

The middle part of the thread will wear out faster, giving you less life on the tires and negating any mpg improvements.

Ask me how i know

[BlacknWhite23]

I run my RL and my X both at 40 psi, trying to squeak out any and all mpg's. I am not worried about running the centers out of my tires, however, but that is a true side effect.

Jianco, The pressure on the side of the tire is MAX pressure to run that tire at, not a recommended tire pressure. The door placard is where you get the recommended tire pressure. Only if you are gonna fully load the X, and I mean all the way to max GVWR should you max out your tire pressure.

My .02

Mike

[Infamous Link]

My wife has an 04 MDX and she gets 12.5 MPG 50/50... She has a heavy foot on every start which really kills the milage.... I did all maintenance i can do to improve this bad boy but its still at 12.5 i'll remove the mid muffler this week since she asked for a little exhaust note...

[HTL Motorsports]

Replace Front Oxygen sensor... Reset ecu....Raise Tire psi to 40psi.. Disconnect Rear Driveshaft ! looking 2-3 gain mpg right there..

[DelSolMarine]

ever remove that mid muffler?

Originally Posted by Infamous Link

My wife has an 04 MDX and she gets 12.5 MPG 50/50... She has a heavy foot on every start which really kills the milage.... I did all maintenance i can do to improve this bad boy but its still at 12.5 i'll remove the mid muffler this week since she asked for a little exhaust note...

[DelSolMarine]

anyone remove mid muffler or 3rd cat with mpg results and no significant exhaust note increase?

[dingaling]

Originally Posted by DelSolMarine

anyone remove mid muffler or 3rd cat with mpg results and no significant exhaust note increase?

the exhaust will not sound different with the 3rd cat delete. Mid muffler however might change the note a lil more than the cat would.

[DelSolMarine]

I have a 2006 RL and 2006 MDX.

I have the JPipe mod on my Acura RL with the 3rd cat delete and the car sounds great. (still very quiet)

I wish there was a JPipe for the MDX. Not really interested in test fitting the one on my RL. It would delete the 3rd cat and resolve the poor design of the JPipe.

[DelSolMarine]

anyone else remove the 3rd cat?