hi folk, i recently had my centre silencer and cat remove on a ph 2 gti 6, so all that remains after the manifold is the rear silencer. Since then the car feels really down on torque. There is a whistling noise when accelerating and a strong smell of petrol after i've ran it, yet the exhaust isn't blowing anywhere. Basically i'm wondering if anyone else has had this problem after doing the same mod or if i should just invest in a new backbox and hope that fixes it! It also uses considerably more fuel now but the lambda sensor has been left in the system. Any help or advice greatly appreciated guys cheers

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Official diagnosis: Carpocondria - The persistent conviction that one's motor vehicle is or is likely to become ill

oh right, i was working on the premise that losing the cat and centre box would free up the gases and the rear silencer would keep the back pressure. Seems the best bet is to put them back in then?

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Official diagnosis: Carpocondria - The persistent conviction that one's motor vehicle is or is likely to become ill

i found that there is a slight increase in power up top though but reduced in the middle..

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230 hp 2.1 16v XU 205 rallye on jenveys Project thread here
309 3dr K20 Type R

thats because theres no back pressure.

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230 hp 2.1 16v XU 205 rallye on jenveys Project thread here
309 3dr K20 Type R

on the flat it pulls but it's very ordinary. I have tested the fuel pump in the past and it was fine, and as i said i've replaced all under bonnet sensors, as well as all 4 coil packs. I see your point that it is very extreme for this to occur as a result of removing those parts, but even the lambda probe is new. I'm running out of ideas :-(

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Official diagnosis: Carpocondria - The persistent conviction that one's motor vehicle is or is likely to become ill

I'd suggest checking the timing and sacking off the "exhaust" for a standard or Pugsport magnex item.

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

thanks. The timing belt was done by an independent place just before i bought the car so will try get that checked tomoz. And will put the silencer back in and see what happens then, cheers for all the advice guys

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Official diagnosis: Carpocondria - The persistent conviction that one's motor vehicle is or is likely to become ill

Mid range torque is more useful then top end power in most everyday driving. I found a decat killed the torque in mine too.

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Nothing to see here