what are the +'s and -'s to knocking the guts out of my cat on my tw. Has anyone done it?

It's blatantly illegal and will make very little (if any) difference to power.

If you are concerned about your cat being a restriction, install a 200 cpsi high flow cat and be done with it.

It's blatantly illegal and will make very little (if any) difference to power.

If you are concerned about your cat being a restriction, install a 200 cpsi high flow cat and be done with it.

Well i was looking at the price of standard cats, expensive so i dont even want to know how much a high flow is and i know it is illegal but i would still like to know if it affects anything negatively.

Theres an online ebay store called scotts rods that have a 200cpsi cat for $125, my local exhaust place where I got my work done only charged me $50 for installation, so $175 maybe $200 at most depending on where you get it fitted.

Theres also 100cpi and 300cpi but the best option on a magna from researching amc and also other forums is always a 200cpi because a 100cpi is not restrictive enough and is too loud coupled with a muffler and the rest 300cpi is too restrictive

Theres an online ebay store called scotts rods that have a 200cpsi cat for $125, my local exhaust place where I got my work done only charged me $50 for installation, so $175 maybe $200 at most depending on where you get it fitted.

Theres also 100cpi and 300cpi but the best option on a magna from researching amc and also other forums is always a 200cpi because a 100cpi is not restrictive enough and is too loud coupled with a muffler and the rest 300cpi is too restrictive

yer cool, i was looking at standard ones online and they where about 700 bucks so i thought the high flows would be even more. I want to keep it quiet so no changing the muffler. Is the muffler very restrictive, will it give me more power if i change that too?

You can get half decent high flow cats off eBay for around the $150 mark brand new.

The standard cat is not a restriction.

If you have a base model, the rear muffler is your major restriction, and you will notice gains by installing a free-flow rear muffler.

You should have a search of the forums as exhaust modifications is a topic that has been covered in depth many times.

+1 I put a straight through lukey rear muffler on my te when I first got it, it has a great sound and I think that was the only difference between the base and sports model.

I'm also fitting extractors on soon but not even thinking about swapping cats.

ok i might try the rear muffler first, its just that i was trying to get more flow without more noise. my days of the louder the better is over, it just gives me a headache.