Thread: MPG??? B chassis

Without the O2 sensors your gas mileage is going to be horrible. The ECU can't read the A/F in the exhaust without the sensor. As the others have said you are running the car in open loop....dumping fuel while cruising.

gotcha, thanks bro!

I can not help on this question. I have never, ever, ever, checked my fuel mileage on my Classic in 18-years of driving it. I am always surprised at how many folks on the forum(s) pay attention to the fuel mileage religiously.

I know it is a 4-banger, but I know I do not drive it like they do in mileage tests. Red-line is my friend.

I got 36 mpg on the way to work today? lol

I calculate my MPG every fill up. I get 26-28 MPG driving to and from work 70% surface streets 30% highway and when I travel back home I get 32-34

I check my mileage every time I fill up as well. The highest I've seen since my rebuild is 22mpg. I typically get 17-20mpg. It's awful! I figure my poor mileage is due to the ITB's making it so hard to stay out of boost (even on normal "light driving" it will build 3-4psi). I do take advantage of the power I'm making regularly though. Strangely (and I know this sounds weird and there are numerous other uncontrollable variables), I got better gas mileage when I was more abusive on it than when I babied it for the entire tank.

When the temperature changes my AFR's change, but I try to keep it updated enough to be where I need. I shoot for 15.1-15.9 at cruise. Idle as long as it's above 15 is fine, and it's almost perfect to being at 12.0 even all the way up to the top under boost after about 7psi.

I know I've read online somewhere that the NX had a 10.5gal gas tank, but after more looking around today, I'd have to assume that information was incorrect. The most gas I've every put in my NX in 3+ years is 11.0gal and I just assumed I filled it waaayyyy up. Once I hit a 1/4 tank it starts acting like it's out of gas, so that's my fill-up point. On average I put about 9-10gal of gas in my tank every time and get about 180-200 miles out of it. I've also never seen a gas light come on in any of the 3 NX's I've owned over the years... heh.

i'm asian and i love numbers so i check my mpg for fun all the time. my b13 and nx usually gets about 31.5, my b15 gets 26.75 mixed and my p11 is usually 32.25-32.5. my taco is about 14mpg lol.

Thats around the exact miles i'm getting too.. well, alittle more.. around 200-225 on a 10-10.5 gal fill up

The only time I ever really run the car hard enough to engage the vvl is on ramps to the highway. Other than that, I may do some spirited driving every now and then.

I'm 35, I've figured out no matter how fast you drive (legally), you still get there in the same amount of time.

ON my B14, full turbo with AEM EMS and 50lb injectors I was getting 32-34MPG. The P11, stock outside of an AEM CAI was getting me 30-32MPG. My buddies VE swap was netting 28MPG. I think it is in how you drive honestly. Most of my driving is highway.

Brent