I don't know if this is still current but in the passed you could get both systems with different muffler specs. One was louder than the other and suspect also flowed a little better. I've had the "louder" XForce 3.5" SS twin tip system on my BA for for around 6 years now. No problem except the cat de-laminating and making it's way into the rear muffler. My car is an auto with a 2800rpm converter. I wouldn't say it drones.

Edited March 22, 201313 yr by straughsberry

^^^ where u been hiding ^^^ ?

Yeah I went in my mates bf xr6 turbo with a single 3.5" and it didn't drone.

I'm only going the dual 2.5" with quad tips for looks and a bit of sound.

I called xforce head office today asking about this, they were fairly helpful.

Apparently the dual 2.5" is around 92-94db and the single 3.5" is around 94-96db, fairly sure he quoted the stock to be around 84-86db.

Also told me that if drone is an issue to go with the dual 2.5" but talking to exhaust shops they believe the 3.5 won't drone.

Will probably just go the 2.5" dual stainless cat back as I can pick that up for $800 delivered over $1200 for the 3.5"

Hey mate where are you sourcing it? 800 delivered is a good price.

Sent from my Nexus 4 using Tapatalk 2

^^^ where u been hiding ^^^ ?

In my cupboard. Ever since they bombed, shot and drove a truck through the house behind mine, I'm scared to go out

What happened to your epic build ??

It's still on the cards. Head is all done but changed my mind on pistons, rods, crank and some block goodies. Stuff like that and life gets in the way sometimes.

Ever kiss and make up with the wog ?

piks?

its only bolt up if it doesnt sit 3 inches low - which mine did when the exhaust place fitted it - I think they had to do 2 cuts and welds to tuck it up nice and high