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good to know. Actually I am looking to get a tranny that usually comes with a B18 since the ys1 I currently have in there seems to have bad synchros, or so I've been told. So mounts, axles, harness, linkage and Ecu all remain the same? I'm trying to do my research so that I know what really...

I have a 91 Ef Hatch with a JDM B16a. I would like to take out the B16 and put a B18c in instead. How much trouble would it be since it already has a B16 installed and what would need to be changed out to make it work? Thanks for the help

OK well they look like that now on the stock exhaust manifold. On the header there is a sinle o2 bung right where it connects to my test pipe since i have no cat. My question is still, do I have to plug the one there and add two bungs, each corresponding to a pair of cylinders? If yes, what...

one other question though. does anybody know where on the header they should put the o2 bungs? Should they plug the one thats all the way at the cat/test pipe and weld two for each pair of cylinders?

thanks for the help guys. I'm gonna have to have an exhaust shop weld the other o2 bung. It should be cheap too.

i have ordered a megan 4-1 header. i assume it will fit since it is a for a 99-00 civic si. Although what am i to do about the two o2 sensors? My car is 0bd0. Help the noob please

btw i do have a traction bar so I think this will help with rubbing against crossmember and I am not sure how to identify it its still 0BD0. thanks to anyone who can help

Hi all, I have a 91 si ef hatch with a jdm b16. I am looking to install a 4-1 header. What model vehicle am I looking to get my header for? Will a header for a 99-00 civic si work?? I was looking at one from Megan racing. I don't know if it will bolt right on without mods. I have no cat...