rb25 gas mileage

Discuss the RB20, RB25 and RB26 series engines.
Surfsup
Posts: 16
Joined: Tue Oct 20, 2009 9:50 pm
Car: 1997 240SX rb25

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What kind of gas mileage do you guys get with your rb25? I can hardly get over 200 miles on a tank. What about you guys? I need a wideband!


DrifterProdigy85
Posts: 1817
Joined: Sat Jul 02, 2005 7:42 pm
Car: 1989 Nissan 240sx (Zenki Onevia)

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22-25mpg. Mostly backroad driving around 55mph.

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EVILS14
Posts: 148
Joined: Mon Jan 19, 2009 12:28 pm
Car: 1995 NISSAN 240SX SE RB25DET

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x2 and thats good cause im always boosting

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amakadius
Posts: 250
Joined: Mon Mar 31, 2008 9:05 pm
Car: 1995 nissan 240sx rb25det S14.5 conversion
Contact:

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i get crappy mileage because i am always racing the fun machine. bov is always going crazy.

Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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You should definitely be getting more than 200 miles per tank. That is what?...14-15 mpg on a stockish RB25? You should be getting upwards of 20-28 mpg.

If I stay out of boost, I get about 20 mpg. I think it has something to do with the lower compression pistons and larger cams not being as efficient, but that is just a guess.

Frankly, I don't really mind getting 15 mpg on a tank since it is my toy car and that is about what I expect out of it. I balance it all out with the 39 mpg my daily driver civic gets


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