[geeza1969]

Hi guys, I own a 115cdi and wanted an easy mod that would reduce the turbo lag and increase power.
The van originally had one muffler and no cat or particular filter fitted from factory.
The original muffler was a 6" * 11" oval that was 26" long, I replaced it with a hi flow 6" round that is 24" long.
The result is smoother acceleration with no lag, more power, better fuel economy and a great exhaust note.

 

[Custom Chris]

Excellent work, only I can't see the image(s)
I am a big fan of cheap/free mods

 

[Custom Chris]

Ah sweet, can see it now.

Looks tidy. Do you get a chirp when you change gear?
Anything that gives more MPG and power is a god send!

 

[Custom Chris]

Forgot to say, those pipes in particular are prone to rusting/falling apart at the joint where it comes out of the box.

 

[geeza1969]

Yes you get a nice chirp when the auto changes up and a deep rumble when changing down or the turbo unloads.
The factory system is 58mm stainless from the turbo through to the clamped joint before the original muffler then it turns into steel right through to the tailpipe so I can see why they rust at the muffler joint weld.
This was a cheap trial, was not sure if the exhaust would make the van drone but its all sweet so when money permits I may fit a stainless magnaflow 6" and mandrel bent stainless pipe to replace the steel bits.
Attach 3 pics of the old muffler cut open, heaps of restriction!
First chamber, second chamber and last one with fibreglass batts.

 

[Custom Chris]

Now that is interesting.
I wonder how much BHP increase you get from this mod alone.
I assume the turbo spools up nice and early now too!?

I think I'll lose my last box soon... A 4" straight through would be nice.

 

[stewface]

I was going to cut out rear box and replace with a straight through pipe. Has anyone done this and had any success? Will it make it too loud?

 

[jason1973]

where did you get the box from?????????????