This can be a controversy report.
This product is clearly intended for track or competition use since it replaces the catalytic converter.
Back Yard Special company in Japan created straight pipe in place of the stock catalytic converter. As you can see from the picture it is nicely made and also intended to supress added noise as much as possible.
Let me now start with some pictures.

View of the stock catalytic converter in place ready to come out.


Taking it out is a breeze if you have the right tools. Let it cool down sufficiently because it can get very hot.


Wanted to see how it looks in there? Well...


Here is the pic of the BYS straight pipe


That hole is there for the sensor.


Inside view of the BYS straight pipe.

 

Installed view.


Some close-up.


Another close-up.


From underneath...


Had some left over memory so I took some shot s of clear headlight conversion.


Front view. Sorry for the unnatural photoshop blur.


Well, so how much gain did I get? Feels like I gained about 5-7hp. Exaust sound got tiny bit louder but I really can't tell if it did get louder. I haven't yet try running with stock ECU but I believe there will not be any problem.
Sorry for the lack of detailed report, I am little busy at the moment.

 

that looks sweet! the bumper is iffy..too many holes, but nice

what's that yellow thing on your dash/windshield?

the o2 sensor cable looked like it had to be stretched a little...is there enough slack in it?

that pipe is mighty blingy!

 

Good luck at your next annual smog inspection.

 

lv, its not like randy had to return his stock cat for a core charge or something, chill.

 

okay, I've got to be the one to ask... What does the "Backyard Special" cat-eliminator cost? And, if it's more than $35, why didnt you just find your local muffler/welding guy and have him make you one? Because I figure it should cost just about $35... $50 tops.

-jason

 

That yellow sticker on his front windshield is a Virginia Inspection Sticker, something that we have to put on if we want to register our vehicle and drive it on the road. I know, it sucks, they make us put it on the Middle of the front windshield. He should have another sticker next to it, his county sticker, but he does not.

 

[QUOTE]Originally posted by j2k:
[B]okay, I've got to be the one to ask...

 

Thanks Randy for taking the time to post the great photos and report. Obviously the converter replacement is more than just a piece of pipe and the quality of the piece looks excellent.

I still wonder what effect this would have on a stock ECU. I believe the second O2 sensor must be giving valuable feedback to the control unit. In normal operation with a Cat Converter in place, additional O2 is consumed in the process of converting CO, NOX, and residual hydrocarbons to CO2, water, and NO2. I believe the ECU looks at this process via the input from the second O2 sensor and adjusts fuel/air, etc.

Randy, I believe you mentioned that you have changed the ECU as well.

Thanks again for the info.

 

[QUOTE]Originally posted by j2k:
[B]okay, I've got to be the one to ask...