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Catalytic Convertor By-Pass Pipe

Posted: Fri Apr 04, 2014 11:09 pm
by Dundy2456
Just curious as to whether anybody on here has (or knows of anyone who has) had experience buying/fitting/using a component like this?

http://www.mx5parts.co.uk/catalytic-con ... ml?stars=1

Would there be any foreseeable downsides (apart from emissions) to fitting this to a stock system? My goal is simply to replace a 25 year old cat with something more free flowing than OEM (not after sik powr gainz). Was considering a high-flow cat... but then I saw this

Cheers

Re: Catalytic Convertor By-Pass Pipe

Posted: Fri Apr 04, 2014 11:11 pm
by hks_kansei
Power increase

2/3fuckall
That's a metric fuckall by the way.


It's just as easy to get a higher flowing cat, either a lower cell cat, or just a bigger one.

Re: Catalytic Convertor By-Pass Pipe

Posted: Fri Apr 04, 2014 11:21 pm
by Dundy2456
So.. No downsides? getting a high flow cat is just as easy.. But I knew that before I posted

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Re: Catalytic Convertor By-Pass Pipe

Posted: Fri Apr 04, 2014 11:25 pm
by hks_kansei
Will make the car slightly louder (slightly)

May get some black sh*t on the rear bar from unburned fuel.

Potentially increase afterfire (ie: unburned fuel igniting in the exhaust)


I've got an 80cel cat on my NB and it's great fun making it pop and crackle

Re: Catalytic Convertor By-Pass Pipe

Posted: Sat Apr 05, 2014 12:04 am
by project.r.racing
just looks like a cat delete pipe. i'd expect lots more noise and exhasut flow. oh and noxious gases coming from your exhaust.

Re: Catalytic Convertor By-Pass Pipe

Posted: Sat Apr 05, 2014 6:48 am
by Magpie
Just be aware that both running without a cat or over a cat is illegal on the road in all states

Re: Catalytic Convertor By-Pass Pipe

Posted: Sat Apr 05, 2014 4:58 pm
by 22Silver
The fine for not having a cat is astronomical. A quick google shows numbers ranging from $1500 to $10,000 depending on state.