What Standard Exhaust Is Straight Through

[custard-rallye 25]

a friend got a exhaust from dingbro for his xs and it was straight through to the back box but he cant remember what year he ordered does anybody no what year it would be that the 205 exhaust was straight through?

[S13Nick 0]

i think it was on all the 1.0l & 1.1l, not sure about the others

[Baz 421]

All the Gti centre boxes are.

[Anthony 1,003]

All the Gti centre boxes are.

I think what he's refering to is which TU mid-pipes have no center box on them, rather than whether the center box is a straight-through design.

[RossD 44]

The 1.1 (TU1)and 1.4 (TU3 & TU3A) base models have a straight through pipe, the 1.4 (TU3S) as used in the XS have a mid silencer like the GTi.

The mid silencer does cut a lot of the boominess out, I've tried both on my 205.

[swordfish210 20]

If you lose the middle scilencer then you also lose a lot of midrange torque whilst gaining nothing but noise. It's more of a downgrade really.

[Batfink 201]

all the pulse tuning should be done in the manifold. The only point of the exhaust is to enable the use of silencers and to keep the gas speed high. I'd be amazed if the 1.1 exhaust would kill mid range, That would imply the bore has been optimised for top end power and surely thats not on the design parameters of a crappy bottom of the range engine.

[shalmaneser 26]

all the pulse tuning should be done in the manifold. The only point of the exhaust is to enable the use of silencers and to keep the gas speed high. I'd be amazed if the 1.1 exhaust would kill mid range, That would imply the bore has been optimised for top end power and surely thats not on the design parameters of a crappy bottom of the range engine.

 

Doesn't the silencer provide some back pressure, which increases the torque? Not disagreeing, just interested.

[Batfink 201]

Looking at backpressure is the wrong way about it. What you want is fast and hot moving gases, moving as fast as possible. This can then create a vacumn at the exhaust port that will help pull the gases away from the engine. A normal silencer will be of no help in this.

[Tom Fenton 1,542]

Years ago I had a 405Mi16 road car which I blew up in spectacular style on the M69. To get me around whilst I repaired it I bought a 1988 205 "Junior" 1100cc complete with 4 speed box.

The exhaust on it was well past it so I bought a complete system, this had no centre box, only a back box, and driving it on motorways did my head in, it was boomy and horrible.

[Anthony 1,003]

The exhaust on it was well past it so I bought a complete system, this had no centre box, only a back box, and driving it on motorways did my head in, it was boomy and horrible.

Seems to depend on the backbox in my experience. My XS came with a centerbox-less midpipe when I bought it, but was really quiet - just looked like a standard backbox. That backbox pretty much fell apart and started to resemble a sieve such was the amount of rot, so I replaced it with a near identical looking GTi backbox. The result? It booms on the motorway now, even though the same backbox on a GTi doesn't

 

Going to either find a TU backbox from a 1.0/1.1, or see if I can find a TU midpipe with a center box to quieten it back down again.

[Tom Fenton 1,542]

The one I describe was supposedly a standard replacement for a 1100cc 205. It was awful.

[custard-rallye 25]

ok so i wont go for that was after a pugsport but dont no where to get one quick as my exhaust is almost falling off

Edited October 27, 2008 by custard-rallye

[custard-rallye 25]

anybody no where to get one or a decent exhaust any help would be great

[RossD 44]

Try your local motorfactors, see if they stock any of the aformentioned makes!

[WooDooUK 1]

after thee baffel in my centre silencer when rescently the rattling finaly drove my nuts, i went to my local exahust place and they made me a stainless centre section with no silencer for £100 (i was £135 to have a standard one fitted by a usual garage). Its a tad boomy but nothing compared to a rattling centre silencer!

[DaveW 6]

I picked up a 1.1 centre section for my old cj for £13! brand new from EU exhausts....