Im trying to get a borla type-s exhaust for my 10'MCS
what I want to know is if i ONLY change the exhaust on it without any programming
would it cause any problems? like messing up the oxygen sensor or getting a check engine light on??
Thanks in advance! I need advices... oh bytheway my mini is leased.

 

If it's a cat-back, then there won't be any problems.

If its a full system:
cat-less, definity have chech engine light.
with cat, might have a check engine light if the cat doesn't provide an adequate reaction with the exhaust gases.

 

I believe this is the system that I'm trying to buy
would I have any problems?
http://www.borla.com/products/produc...rod_sku=140261

 

I'm running the equivalent Borla exhaust of my neo classic R53 with zero problems. If it's a cat-back, you're good to go!

 

I installed an Invidia Q300 a couple of weeks ago. It replaces everything from the downpipe V band clamp to the muffler. (resonator and second cat). No check engine light, nothing...

Sounded great to me but wife of 25+ years said it had to go... (she thinks I'm like a 9 year old with a drivers license...lol) So it's easier to put the stock exhaust back on, than swap the wife out for a newer model... A lot less expensive too.

 

I think its a bit pricey for just a catback that looks like that. Id go for something in the $500-$700 range. Cat backs are usually safe. Did a few on other cars and no problems so far.

 

You won't have any check engine light problems with just a catback exhaust. I would warn that with the borla you have to remove the center cross support, so I don't recommend it. Also just a catback exhaust won't gain any HP on a turbo MINI.