I started to hear this really loud rattling coming from what I though was a heat sheild or something from underneath that car. I took it to a bud of mine that has a muffler shop to check it out. Turns out a blew my cat.....
My mods are:
HKS intake
HKS 272/272 cams
Bushcur 2.5in downpipe
No muffler
boost controller
Street tuned dynoflash

I was curious if anyone else has had this problem? I guess I am going to order a Test pipe......anyone reccomend a good one to go with my setup, I dont want to get a check engine light. Would a 3in pipe be ok? Thanks

 

Not even a **** star could get their mouth around a cat to blow it!

But seriously, more likely that you have a broken weld somewhere. You had better check for yourself.

 

Me too! - Except it wasn't the stock cat

It took me a while to figure out it was the cat - thought it was the heatshield then other things. Anyway - I am waiting for my test pipe from Vishnu (hopefully early next week).

Your rattle wasn't constant was it?

 

No just higher RPM's.......ohhh It is def. the cat you can hear it like crazy I got under the car when it was on the lift.

 

about 10 minutes after it is warmed up!

 

I never checked to see if it starts after it warms up.......you can def. smell it thought. It smells real bad.

 

You know what? I saw the title of this post and was gonna answer it in my own way...but you beat me to it. Good job! I was going to say something like" Sorry, I'm not into bestiality".