ive got a b20 in my hatch n i think i get pretty shitty gas milage. i fill up and around 90 to 100 miles in at half take or a little lower. i just replaced my o2 sensor but i have custom exhaust with no cat. here is what i have done to the engine.

golden eagle pro series fuel rail with fuel regulator and gauge. its running a p06 ecu so im guessing it was converted to obd1. anything you guys suggest to get better gas mileage? i also believe it could be running a little rich but idk how to adjust that. i hooked up a air fuel gauge(narrowband) and it doesnt read anyhthing till i rev and let off the gas or when im driving and go over 4k rpm. im tired of filling up every 3 to 4 days. i use 93 octane btw. id say i get roughtly 200 miles to the tank.

 

are you driving on side streets real hard or going 80+ on the highway?

 

Yep, try driving like gramma. Any codes? Are the ignition system components relatively new and is the ignition timing set to spec?

 

i step on it every once n a while but most of the time i just cruise. shifting around 3.5k there is 2 cels. iat(intake air temperature) and tps(throttle position sensor). could this be my problem? what is the average mpg you guys get

 

Yes those could def. be your problem dummy.

And dont shift so damn high, this isn't a ****ing 17,000rpm mario andretti cart. You shouldn't be shifting more than about 3k when just putting around.

 

Definitely fix the codes. That should lead to improved gas mileage.