Exhaust

rob · Post by **rob** » Thu Mar 25, 2004 10:30 pm

I borrow one from QVC for my holidays - then send it back.

teddy206 GTi · Post by **teddy206 GTi** » Thu Mar 25, 2004 11:34 pm

the repair section is the one in the diagrams.

i.e. you cut the existing one to fit the new repair section in.

Sara · Post by **Sara** » Sat Mar 27, 2004 9:47 pm

I finally got my exhaust repaired today with Robs help, they replaced the back box and the middle pipe then added a repair kit, so i did not need to replace the cat. Not as bad as first quoted by Kwik fit and the dealer Â£321, which is guaranteed for 2 years. Top guy Clive at Peugeot in Derby. It's been a long day, but saved a fortune. Thanks again Rob for all your help, still a hero

Post by **Lyndon** » Sat Apr 10, 2004 11:16 am

i got similar trouble, the joint at the back box and the rest of the system as started to blow

sara n rob, where did ya get it done and how much if ya don't mind me asking as i don't wanna pay through the nose for a bit of tubing and a box

dixon of mansfield quoted Â£600ish + vat for the system, or they can cut it after the cat and weld in the middle piece for around Â£240 + vat still a lot of money

HELP

Post by **Lyndon** » Sat Apr 10, 2004 3:51 pm

sorted

got it done at -

BRITANNIA TYRES
116 Siddals Road
Station Approach
DERBY
DE1 2PW
Contact - Dave
on - 01332 347491

part of http://www.powerflow.uk.com/index.html network, they cut it off just after the cat and used a normal 206 GTI middle section but they had to heat up and slighty flatten part of it where the strut brace is under car, took about about a hour n half, job well done and all for the bargain price of Â£64.70 INCLUDING vat

so a big

to peugeot who wanted nearly 5 times as much for doing a similar job

so thx to carl for mentioning powerflow and the people at BRITANNIA TYRES - VERY helpful and a pleasure to deal with, so if ya in the derby area and need a exhaust give um a try,i'm sure you'll not be disappointed

teddy206 GTi · Post by **teddy206 GTi** » Sat Apr 10, 2004 5:32 pm

is this a normal powerflow mid section or a standard GTi section?

If so did it not need shortening coz your car will have 2 lambda sensors i guess...

Post by **Lyndon** » Sat Apr 10, 2004 7:35 pm

think it was a normal GTI section, think they did cut it down as they offered it up marked a few places,went away then trial fitted it a few times b4 they got to work on flattening a section

what do the lambda sensors do anyway

carl · Post by **carl** » Sat Apr 10, 2004 9:47 pm

Sounds like a result. :yes:
Our local Powerflow agent is Topgear in St Albans, and they're also good.

Lambda sensors basically measure the amount of oxygen in the exhaust and hence can determine how the engine is running and adjust the mixture accordingly. It's essential to have the mixture spot on all the time or the cats get poisoned, which is why all cars with cats have lambda sensors.

However, even if you have two cats you usually only have one lambda sensor. When I had a Saab it was at the bottom of the downpipe, ahead of the cat (which was in the first "horizontal" bit of the exhaust). When I had a Subaru, it was in the top of the downpipe, in front of the first cat.

If there were two lambda sensors, what would you do with the output? If one was reading OK (1V nominal) and the other wasn't, there's nothing you could do with the mixture to make them both read the same.

Edit: actually, I ought to clarify this. The TVR, I suspect, has two lambda sensors. The exhausts are entirely separate from the cylinder heads backwards, and AIUI there are separate adaptive maps in the ECU for each bank of cylinders. So it makes sense to run two lambda sensors. But for a four-pot, probably not.

Post by **Lyndon** » Sat Apr 10, 2004 10:22 pm

it seems to be running ok

and yeah a result at Â£64.70

Derek · Post by **Derek** » Sat Apr 10, 2004 11:04 pm

counting the pennies again lyndon

Post by **Lyndon** » Sat Apr 10, 2004 11:08 pm

must be part scottish

teddy206 GTi · Post by **teddy206 GTi** » Sat Apr 10, 2004 11:15 pm

Cars with 2 lambda sensors are a level 4 emissions or something...

The first sensor tells the ECU what is going into the cat...the second on tells the ECU what is coming out of it. Basically the 2 lambda car has more tightly controlled emissions that a 1 lambda car.

Apparently de-catting a 2 lambda car can bugger up everything as the ECU isn't getting the signals from the second lambda as the cat isn't their to convert the gasses...

I wonder if anybody will ever make a shorter section for the 2 lambda car? It's becoming common now that these cars will need mid sections as they get older. Bit of a pain having to cut and weld every new section!!

carl · Post by **carl** » Sun Apr 11, 2004 10:33 am

Ah, I see what you mean now. But I think in those cases if you decat you'll get a warning light on the dash: "Check Engine" usually, or probably the picture of the engine on a Pug. So, no light = OK.

Ashley · Post by **Ashley** » Thu Mar 10, 2005 8:27 pm

I used Top Gear in London:

TOP GEAR LONDON
249-253 Queenstown Road
BATTERSEA
SW8 3NP
Contact - Pav/Jazz
on - 020 7627 5444

They charged me Â£260 incl VAT to replace the back box and the mid section, with a brand new stainless steel system. It has a lifetime warranty! Peugeot had quoted me Â£1,000 for parts and labour to do this same job. BIG thanks to Pav at Top Gear - I recommend them highly!

Derek · Post by **Derek** » Thu Mar 10, 2005 9:17 pm

ok we got the idea that you like them in the last identical post.