Hello guys, I have 97 civic lx(Canadian model) with 185000 kms.I just found that my exhaust manifold is cracked and i am getting bad gas mileage.I have heard that its a common problem with civics.I need your suggestion with 2 things:
1. If i install aftermarket steel header and install vtec catalytic converter (from vtec engine under the body style)and extend the secondry o2 sensor wiring, will it run OK in terms of engine noise and gas mileage?

2. Is there any way i can install vtec exhaust manifold (including cat)from civic si (from junk yard) and do that way?
My main concern is to remove the cracking problem, gas mileage and less engine noise.If you guys have any other better suggestion?? Thanks in advance.....

 

What's a vtec cat?

 

catalytic converter from vtec engine like from acura or si. thx

 

Ohhh, and vtec exhaust is same thing but its the exhaust? I think now I understand.

 

Read/look through all stickies prior to posting. It seems as if you have an understanding as to where you would like to go with the swap.

Header, Intake, & Exhaust - HondaCivicForum.com

The first sticky in that section tells you what you need to know.

 

Thanks for the reply bro!!.Yes actually i did go through the sticky already.But my question is that will it affect the performance bcoz primary o2 sensor is going to be away from the engine than the oem design of lx . and will it make the engine noisy? As in Canada we don't have civic ex with vtec engine,so which vtec model's catalytic converter i can use. And can i swap it without welding anything using whole system from any Canadian model like acura 1.7 el? thanks again...

 

Canadian SI = USDM EX.

You shouldn't hear any changes in noise unless you run an aftermarket cat converter. If anything, it will help performance slightly since the "vtec" cat set-up allows the motor to breathe easier.

 

thanks for your reply! i just found a used manifold from 200 civic and i will post results after that.thx again.