'97 Civic EX Short Ram intake to stock. No fuel economy improvement.
#1
'97 Civic EX Short Ram intake to stock. No fuel economy improvement.
Recently I bought a short ram intake hope the MPG would increase in my civic. After having a new head installed I saw my MPG go from 32/33MPH to 36/38 MPG. Already had the short ram and figured it would not hurt anything to install it after the new head. MPH went back to the low 30's Went back to stock but the MPG did not improve. (2 tanks since the switch back to stock) I have ordered a new air temperature sensor to see if I might have done something to the old (still installed because the new one is not here yet) one while switching back and forth. Was this a good move? Any other possibilities on the lack of MPG?
#3
Re: '97 Civic EX Short Ram intake to stock. No fuel economy improvement.
The Engine light was on for some misfires in the 1 and 2 cylinders. I replaced the plugs and wires a few days before the new head was put in about a month ago. Full tuneup was about 2 years ago. Dim engine light since the new plugs and wires.
#4
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Re: '97 Civic EX Short Ram intake to stock. No fuel economy improvement.
Well if you got a missfire on cylinders 1&2 your not gonna get better gas mileage. Put some injector cleaner with premium gas next fill up, I did had the same problem with my old 4 door eg, it worked for me. Just a thought, tho man start small.
#5
Re: '97 Civic EX Short Ram intake to stock. No fuel economy improvement.
You need to do another full tune up. Use OEM ignition components.
Dim CEL?
#6
Honda-Tech Member
Re: '97 Civic EX Short Ram intake to stock. No fuel economy improvement.
short ram intakes increase intake air temperature and if the ambient air temperature outside decreases, so will the fuel economy benefits. Frankly I think it's possible your car needs a tuneup with the first order of recommendation is replacing that PCV valve of yours along with checking to see if you have any vacuum leaks.
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