Im guessing my cat is clogged by the massive amount of heat that is comming from underneath the car and the amount interior heat. The car also wants to crap out at idle when it really hot.

Will a MP create significant noticeable noise gain and smell with the stock catback?

I am aware of the boost issues the MP will cause and I have a PFC on order for that.

 

No it wasn't that much louder when i put mine on.

you'll smell it a tiny bit......

once i got the cat back on, then she got LOUD.

 

my car didn't seem all that loud after putting the MP on just cruising around, but at WOT it was insanely loud, and just getting a PFC doesn't guarantee that you won't get boost creep with the MP, I did with my PFC, so I put a cat back on my car

 

i didn't get creep untill i put the catback on after the DP and MP....

then it spiked like a ****....

 

RX7WEEE, it's strange how differant cars take to mods. I started spiking to 12 psi as soon as I modified my stock intake box and put on a down pipe(even with stock cat & cat-back). I fabed up the Home Depot boost controller to get things back down to normal.

 

I have a dp, midpipe, and stock cat-back.

It actually has a mellow deep tone at idle, and at WOT it really isn't that loud. I don't get any boost creep nor spikes.