my car is practically stock, you can see my sig. Just wondering if a cut out will have any adverse effects on my car with my current upgrades and stock tune. Throw codes? anything?

 

It'll be fine. It's probably one of the cheapest, easiest mods you can do. You might want to check on an electric cutout if you'll be capping and uncapping it often. It's alot more convenient instead of crawing under the car all the time.

 

Yeah, I had thought about that. I already have a cut out that I made. It's 3" OD like Everyone here said I need but it's like a 1/4" too big. Any I deas on what size would fit? I think my I pipe is the same size as a stock one.

 

A 3 inch cutout will fit, any good welding shop will install it for around 30 dollars at least thats what mine charged.

 

Stock is 2 3/4"? so it's pretty close. Like formula001 said, any shop can put it on. 3" is what you want though.

 

Go for a 3" cutout.