Air Intakes and Gas mileage.

Shift.Jemz · May 18th, 2007, 04:47 PM

Ok, so i did this make shift short ram air intake for my 93 altima.

I have just two questions i hope someone can answer.

1. While driving it seems to sputter or misfire of some sort but not all the time, it seems to be whenever i dont open the throttle enough

2. do air intakes improve gas mileage? i went from barely getting over 200 km's on 26-27 litres(30$ of gas) to barely getting over 150!!

dubs6 · May 18th, 2007, 06:28 PM

the a/f is off since you got the intake. sputtering could be caused by too much gas causing a rich condition and basically flooding the engine. this could explain the loss in mileage as well. go back to stock and see if it fixes it. just b/c you think you are adding more air doesnt mean you are adding more power. my .02

Shift.Jemz · May 21st, 2007, 02:45 PM

How can i adjust my a/f ratio? it sounds like what your saying is happening too it's running too rich because i can smellllllll it running rich or something.

Shift.Jemz · May 22nd, 2007, 01:24 AM

Is the only way to change air fuel ratio by doing like "computer" work? meaning i'd have to buy a cable etc and software?

so confused with methods of chcanging the a/f... been askin everywhere!!!

dubs6 · May 22nd, 2007, 11:01 AM

i think its going to be a combo of the distributor/timing and computer. but i really dont know on these cars.