sircrx5

I have a 91 CRX DX that I have been running a b16 for 2 years, I wanted to up the anty this year so I dropped a b18c into it. The swap went fine, infact it started up on the first crank, and I do mean the first crank, like 2 seconds (thank you walbro fuel pump). My problem is that it is running too rich, here are some of my mods: skunk 2 intake, 65mm throttle body, AEM fuel pres. reg. and fuel rail,4-1 Header, Quaife LSD, and tons of susp. stuff, but motor is stock. I am at this time OBD 0, future plans I may go to OBD 1. I am running Hondata, and I know I can just burn another fuel map chip but, in all reality my b16 chip should have run the motor with ease, and a little lean maybe in the midrange but all in all should have been fine. I did burn or at least tried to burn a mock b18 chip, just to get it to run better, its not all that easy since there is no such thing as a OBD 0 b18c, so I'm thinkin something else may be wrong. AEM fuel pres. reg comes from the factory at 40 psi, I dropped it back to 35 although a stock GSR runs at about 45psi. I'm sorry for the long letter but just wanted to bring as much critical info to the table as possible. any ideas from the fine people at Honda-Tech?



[Modified by sircrx5, 2:58 AM 4/1/2003]

VTECVillain

Why are you running Hondata on a "stock" engine? I suggest some cam gears and dyno time to get your air/fuel into synch.

poison

correcto.

or lower pressure with your FPR.


[Modified by poison, 8:17 PM 3/31/2003]

sircrx5

thanks for answering my post I did some snooping around the motor and found that the O-ring that sits underneath the MAP sensor was missing, from when I had the throttle body oversized. I guess I'm not quite used to this 95 motor yet. My old map sensor was attached to the fire wall and connected by a vacume line, I fitted a new O-ring and everything seems fine, as far as running Hondata, the fully built B-16 that used to sit in my engine bay used the Hondata, and I didn't feel like taking it out, beside I appreciate some of the features and tunability. So the B16 will go into my 91 si with another Hondata, and I'm going to give it a little juice, the motor is strong as hell but lacked some of the low-end torque I need for my racing and I will make the 91 a street ride. It's funny I probably have over 50 swaps under my belt, and it goes to show you that you have to break it down, piece by piece when either tuning or problem solving and try not to jump ahead and over look something. Thanks again for answering and I hope maybe I can help someone else in the future

sircrx5

one more thing, it allready has cam gears, and the place I work at is getting a 4 wheel dyno on the 7th so it's allready scheduled for that, which I completely agree with, Thanks