you got a manual thats why its so low, the auto actually has a highway gear, the manual doesn't (its a full japanese gearbox)

 

exhaust has nothing to to with it

 

saddly no body said the correct answer i'm looking for

 

just got 32mpg highway

 

When I measure my mpg, I just get a full tank, drive till it's empty, then divide the miles driven by tank capacity (13.5 I think). I got about 27 1/2. That's like 75% highway. Is there a diff way of measuring mpg, oter than waiting to get a full tank and driving till it empty?

 

Well, I don't know what others do but I usually fill it up (I don't top-off), drive until its low, fill it up again, and then divide the miles I drove from the last fill-up (using the trip meter) with the amount of gas that it took to refill the tank.

 

they way you are measuring works but only gives you an estimate, the only way to get an exact reading in that fashion would be if you drove till your car sputtered out of gas, drove to the very last drop. the exact way(very tedious and fickle way) is to:

-fill up, and reset trip
-drive till next fill up (atleast a half a tank)
-keep track of how many gallons it took to refill then divide that by the miles you drove

that will be your exact mpg. so your actually getting better mpg than your calculating. givin that theres about a gallon left at the bottom of your tank when you reach empty and come to the station your probably getting around 29mpg(give or take)

 

http://www.plxkiwi.com/kiwiwifi/

PadilliaxA has correct method for on the spot MPG. Full time monitoring is possible but
still waiting on bluetooth interface to OBD/CPU for iPhone/iPad, maybe have presets for econo/performance... even have a hyperMPG application for max efficiency...

Till then all you can do is monitor performance w/o adding power chips.

wish the Diablo Mafia was available...
http://www.diablosport.com/index.php...display&pid=50

 

i don't have a need for a cell phone or ipad

 

i lost 10mpg

 

good news is i'm up to 35/37 city mpg

 

38 city/35.5 highway

 

Don't what to brag (Ok, only a little )
But I'm getting 40 mpg

in a auto



Got one of these sticker for the back

http://cgi.ebay.com/ebaymotors/140397809262

 

nothing worse then a smug hypermiler just them driving slow ____es me off

 

Keep Right Pass Left

 

Just out of curiosity, have you tried routine maintenance stuff like cleaning the MAF Sensor, changing Spark Plugs, ensuring spark plugs have the proper gap, changing the gas filter, changing the air filter, etc. Also, how many miles does your car have?

 

i was getting 38mpg in my supercharged xa on the highway with my foot in it for over 300 miles. Long drive. But FUN

 

Dont forget xA has higher drag coeficient than Tc (xA is like .37 vs Tc mid .20s)...It translates into more work to be done to push air around its chisel-like body. Plus, 1.5 L motor isnt a powerhouse by any means...it all translates into higher consumption at higher speeds.