swapped a b18a1 with ls transmission in my 89 civic sedan. built a ram air system for better mpgs and horsepower. mixture of city and highay driving and I only got 100 miles out of $18 of gas which is about 20 miles per gallon. whats happening? I should be getting about 30 mpg

do I need to fix something or could there be something mechanically wrong with the car to get that bad gas mileage

 

Bro... the way you drive doing doughnuts and driving into ditches it sounds about right!...

 

I already explained that I shouldnt have been going 15 around a 90 degree turn with shot tires. tho 15mph is no road race

 

Ram air or short ram? there is a difference.

 

What Ecu are you running? CEL on?

 

ram air

 

obd0 pr4 no cel or ecu codes

 

ya something aint right im running a fully built na b18a1 on stock injectors and ecu and im getting like 22 to 25 around town on 92 octane in my ef hatch whens the last time u did a full tune up check the psv and clean everything might help

 

oh ya and im running a gsr tranny so with the ls tranny u should be getting killer mileage like 30+

 

thats what I thought. and I just got the swap in the car

 

Got to drive like a granny to get good milage.

 

hows your belt and ignition timing? plugs cap rotor and wires in good order? cat's not clogged is it? hows your compression?

 

cat is good. exhaust all new and replaced timing belt is new

 

jus a shot in the dark, but what bout vacuum leaks or your vacuum hose routing, are they ran right

 

how would I be able to tell? the idle is weird sometimes but never eally over 1100 on a cold start

 

throw some seafoam in your gas tank to clean the fuel system out. see if that helps. but ef have a small tank compared to the integra so it might seem weird at first but its really not bad on gas at all.

 

Seafoam is harsh and dangerous.

 

i throw a whole bottle of seafoam in tank nothing happend besides my car running better then it did. have you used seafoam? or you saying that based on what other people have told you?

 

Every car i've owned has had seafoam run through it. if you do it right, it doesnt hurt stuff.

My guess would be the ram air. The MAP sensor is reading that there is *** tons of air coming in, so it adds more fuel. Switch to a short ram or CAI and see if that helps.

 

sounds easy to accomplish and makes sense. will try this