Anyone removed there rear boxes?

**eddy** · 16th December 2009, 20:50

Just wondered how loud my car would be if i removed my two rear boxes? ( 2.2 dti ) Dont like mine so they are coming off just wondered if anyone else on here has done this and what the car likes now? I've already posted a thread but have'nt got many replies?

**ditchp** · 16th December 2009, 21:00

i have no rear boxes on my cdti and it sound's the same as normal really...only when you really plant your foot down do you get a bit of a noise..

hth

**Stephen S** · 16th December 2009, 21:06

My old Vec b DTi had snapped before rear box and i never even knew until i was under the car checking for something else!!!

**eddy** · 16th December 2009, 21:10

Thanks for the quick reply, I will go up the garage i phoned the other day to get a price for removing my rear boxes and replacing with stainless pipe and tailpieces ( they said between £50-£100 but i would need to take the car up first for them to have a look at what i want done)

**JudgeApocalypse** · 16th December 2009, 21:40

Heard something about due to the lack of back pressure, turbo over spool. Think that the co2 emmisions increase is an obvious down side... On the positive side though there's the possible increase in performance? And better exhaust note? Also apparently from the info on this site, the mod doesn't effect your Mot.
All this taken into account, It's something I'd like to do to my 2.2dti perhaps with a mid sports box on back to give a little back pressure.

**smoggydovit** · 16th December 2009, 22:02

I'm running a cat back, no boxes twin exit system

love the sound it gives

**bigben** · 17th December 2009, 10:20

The turbo will not overspool as it it set to run at a certain psi and there is still ample back preassure from the system to keep the engine happy. Why would the co2 emmisions go up?

**Keithy** · 17th December 2009, 18:37

I have taken away my rear silencer and replaced it with dual exit no back box. Not very loud at all unless you boot it. I'm thinking about taking off the cat an intermediate section next.

**eddy** · 17th December 2009, 20:49

Cheers for all the replies, I went up the garage today and its going to cost me £100 for the new pipes with tail pieces. I have got it booked in on monday so i will let you all know how it goes. Im still keeping the middle box on though its just the dual boxes that are going to be removed.

**Keithy** · 17th December 2009, 20:51

Originally Posted by eddy

Cheers for all the replies, I went up the garage today and its going to cost me £100 for the new pipes with tail pieces. I have got it booked in on monday so i will let you all know how it goes. Im still keeping the middle box on though its just the dual boxes that are going to be removed.

2.2dti with dual back boxes as std???