ok guys heres the scoop..

i have a b18a swap into my 90 civic hatch with the mpfi conversion...
not all of the wiring has been soldered.. i have never seen over 550km on a tank of fuel.. rite now, i'll be luckey to see 380km.

the engine has 320,000km on it, some problems still with the idle. im in a very cold climate.. just after it warms up, the idle dwindles very low, and then the problem dissapears till the next time..

i was thinking the soldering "should" be the problem, but at the same time, it got down to -32C and the car went like a bat out of hell..

im starting to wonder..

when i did the swap, i didn't take anything but the complete manifold and dizzy for the swap.. should i have changed over map, or any other censors? i have a new integra O2 on it..

lemme know what you think guys.. i will be pulling the engine and doing a tranny and fresh engine in the spring, but that won't be for a little while still..


Oh and also, for fuel millage and power, how much of a difference has anyone noticed on the obd0 to obd1 conversion??

Comments?

 

What ECU are you using? Also, I'd think you'd run richer in the cold since the IAT is freaking out at -32.

 

I dont know Km's but when I had my 91 integra I could get 30-40mpg no problem

 

well, it depends on how hard you run the car too.. i have seen everything from 28 mpg (11.9 km/L) to 40 mpg (17 km/L). the 40 mpg i got on a car trip through the mountains, where i was at ~3k rpm the whole time, and the 28 is from racing all weekend, hardly below 5k rpm the whole time. so it is wildly variable, just based on how you drive it. most likely, you are eating fuel because the ecu is trying to compensate from the manifold absolute pressure reading being very high by injecting more fuel, which will cause you to burn more gas. then throw in driving hard, and that explains it. 380 km is pretty good if you dont give the car a break very often.. thats about what i average on about 8 gallons. keep it under 4k consistently, and youll probably see more like 450km/tank pretty easily. good luck

 

stock ecu for a 1990 teg.. so pr4. im getting approx 22-25mpg, and im not honkin on it much at all.. i usually shift round 3500rpm..

 

anyone? anything??

 

Well kids, here's the scoop.. my tps sensor, #1 and #3 injectors had bad connections.. performance header i purchased had the O2 on #1, and sure nuff none of the connections were soldered..

I cannot stress how important it is to leave yourself extra wire, use shrink tubing and solder the **** out of everything..!!!!