Hey yall,
When installing cat bypass pipes does the noise increase to even the slightest uncomfortable level? I've got fun cars to be loud, I can't have this car louder than an E55.. So is it loud, or is this bypass mainly emissions that we're getting around?

It is not that much louder when all the windows are up, but when the back windows are down, u can hear that baby roar!!!!

so many people stop me to ask me what i have under the hood....it is deeper and when you hit the throttle louder...otherwise not a huge difference

Since you have the Turbo, it will not be much louder as the turbos muffle the noise dramstically. You should have no problem with it being intrusive. Hope this helps.

not loud at all go for it.

Not loud at all in normal driving conditions with windows up.
Do it! You will like it. Cheapest mod with best return .....................

Just go with the bypass pipes. If you get the muffler your car will be extremely loud

we do them all the time.. not loud on the outside and you can't even tell on the inside since it's so well insulated

sounds good to me. I think I'm going for:
BOV
Cat bypass
chip
intake
filters
new 20" lightweight wheels and tires
lowering module

Sound good?

Thats a good list.
I did bypass pipes, filter, and DV's first. So far I am happy with that. Software will be next and then who knows.

What is BOV?

BOV= blow off valve

If you want your CTT to be quiter i wouldnt use BOV's (if you can even find them for a CTT) definatly go with the Diverter Valves......they are a better fit for the high performance Germans.....BOV's are meant for dodge neon SRT4's and Subaru WRX's

sorry, I meant diverter valve. I've been haning around evos at motorsports ranch too much lately..

You in Dallas? MSR in Cresson?