straight pipe sound?

[autobahn vet]

I got a hiop exhaust on my '02 330. I want to straight pipe the exhaust from the exhaust manifolds- cats to the rear muffler. Does anyone know what this would sound like? super loud? the hiop exhaust has a mellow sound, so maybe it would be about right. So should I remove the front muffler and resonator or what?
thanks

[MARKSDIDDY92]

yea remove that resonator and get thout sound you looking for.

[ernie]

i ran resonators but no muffler and it was exactly what i wanted: not too loud but with a very aggressive tone. good luck with your project!

ernie

[zcghost]

One of the reasons BMW motors are so torquey are not just because they are I6s. Look under the car and you can see the exhaust and all the curves and silencers (i think thats what they are) and back to the muffler...its a long, twisty route, but the engineers have done that on purpose, to create just the right amount of backpressure meant for these motors to run almost perfect from the factory. Thats one of the reasons (i'm guessing) that aftermarket BMW exhausts are so much more expensive than exhausts for other cars. The aftermarket companies have to put in even more R&D so as not to ruin BMW's current backpressure levels, we dont want to suddenly lose torque by bolting on a cheap system that was quickly put together.

A mechanic I once worked with explained that to me, and every time I look under a bimmer, it makes more sense.....the most complex exhaust under a bimmer I have seen is the E39's.

I could just be crazy. Is there any merit to what I am saying? Please correct me if I'm wrong.