Hi There,

I am wondering what easy mods can be done to increase the MPG I get from my 98 GXE?

I've seen mods for more HP's, how do they affect gas mileage?

Thanks.

 

Get a 5-speed transmission if you don't have one.

 

ya can go for intake and full exhaust would help give ya a few more mpg

 

sythetic oil, spark plugs, and fuel filter. those are improve gas mileage mods.

 

At highway cruising speeds, a manual transmission equipped 4th gen will rev higher than an automatic, but one can't praise the efficiency of the autotragics during the non-overdrive gears (shifting, city, etc). Also, a manual transmission relies on the driver's expertise on using the clutch efficiently. But you will not be able to get that much of an improvement.

Just face it, a torque-y engine will not give you good fuel economy. It's the trade-off for driving excitement. That's what Nissan VQs are good for, otherwise get a 4 cylinder QG18 or a Civic.

 

Light weight shoes work well......

 

Now do higher revolutions actually mean lower gas mileage? I read somewhere on these forums that the engine is at its most efficient at its peak torque RPM...which is 4,000 (or ???) on the Max. So can the 5-speed actually get better highway mileage?

 

No, also any air freeing mod (intake, exaust, ect.) will increase MPG by allowing the engine to breath without as much work. But because people tend to drive the car harder with these mods milage tends to suffer more than before these mods.

 

MPG really has to do with the load on your engine. if you are in a high gear but there is a lot of load on your motor, your MPG is going to suffer. but if you are going the the same speed at a higher rpm, in a lower gear (like from 5th to 4th), there will be less load on your engine. with extra load on your motor, it is compensated with more fuel. (i.e. towing a boat... going the same speed... same rpm... but a great deal of extra weight... most times will cut your mpg in half due to the extra strain of the weight) i know this isn't an exact description, but i've learned some of this by watching the instant mpg reading on my girlfriends Audi. so if you can free up your cars breathing... loose some weight... and don't floor your car, especially in high gears...ect... you're mpg can increase.