I have a 1999 honda civic ex with a gsr b18c1 motor swap i have a gsr trans.
Recently it started to act like it had some ***** and run like its supposed to. Its like it pulls like it is supposed to. But then is goes away after a little while. Now its gone and hasn't been like it for a couple months. I have no idea what could cause this... Anyone have a clue??? Thanks

 

you make no sense! what goes away? lack of vtec? specify it more

 

Its fast one day then the next day it is slow. Its so weird.

 

what ecu are you running? does it feel like there is a lack of fuel?

 

P72 I never had time or money to wait and buy a conversion harness so i spliced every wire into the ecu myself. And yeah it does feel like it. I bought a new fuel filter and it is running the same...

 

since your obd2..the gsr ecu should just plug right in...i dont think you need to splice anything unless your ecu is obd1..which would be pointless to run a stock obd2 motor on an obd1 ecu...

 

Maybe the motor is an obd1 gsr motor i dunno.
But i need to get a gsr engine harness and see if it plugs in.

 

does your distributor have one or two plugs?

 

does the needle on your temp gauge come up to the middle (ish) before you start racing around town?

 

1 or 2? It has 4 4 cylinders. 4 Plug Wires.

My temp never goes above 50% of the way up

 

so you are running and obd1 ecu and you spliced all your wires yourself? i would prob say that is your problem.

 

Skipped a tooth on the timing belt possibly?

 

the motor is an obd2a and my stock motor was a obd2b

 

I need to find a Honda Mechanic in Maryland

 

so your saying it runs like a slug now?

 

Yes it runs like a d motor now

 

Check your air filter and fuel filter. Seems dumb, but these are two very common areas that if clogged up will cause a noticeable lack in power.

 

I replaced my fuel filter a couple weeks ago but ill check the air filter

 

sounds like a timing issue like Psychoteen101 said.