replacing middle section what about the lamba sensor [Archive]

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wavy

27-09-2006, 01:59

my exaust is blowing from some where iv had the manifold/downpipe gasket changed but its still blowing from somewhere so im planning on going to an exaust place tomorrow to see what they say im hoping its not a split in the manifold
while im there im going to ask how much to make me a centre section to replace the cat and 1st box
but im not sure what i would do with the lamba sensor

i know most ppl say decat is best but will i lose out on low down power ?
still not 100% sold on the decat idea yet :?

MatBrown

27-09-2006, 02:07

Lambda Sensor lives in the downpipe, so no issues with swapping Cat and Centre section.

Mat.

2 live

27-09-2006, 08:00

try whipping the manifold off, and check the weld where the 4 pipes meet n join into the 1 on the downpipe.........they always crackin the weld here.

as matt says.lambda in downpipe. btw.....if u gettin a de-cat pipe n ctr section, make sure the place fitting it know it will need to have a cat put back on for mot time, otherwise a 1 piece part from d/pipe to backbox wud b a real arse wen u need to fit a cat.

summeh

27-09-2006, 09:30

get someone to rev the engine, while u get your hands down there and feel for blowing, you shud feel it quite easy (becareful tho it will be hot!). over time a black soot will also build up.

Enid

27-09-2006, 10:41

Since i've put my CAT back on the car definatly has more pick up from low revs, much prefer it that way too. Won't be putting another decat on mine.

2 live

27-09-2006, 11:18

yeah but ul be losing out in evry other area. mid range/top end.

depends wot ur willing to sacrifice tbh.

VIPERONE

28-09-2006, 14:14

stainless midsection with silencer inis £90 fitted at greenwoods.

I had my cat back on, the low down torque is great, but you do lose top end.

nyk

28-09-2006, 15:32

£35 if you speak to Pete @ Greenwoods. They obviously saw Gunner coming.

Dave if your going down speak to Pete and tell him I sent you.

wavy

28-09-2006, 17:10

i went yesterday and he took 1 look at the car and said £100 :shock:
i aint payin that for a 7.50 bit of tube lol
atm im more interested in stopin it blowing he said tighten up the springs on the flexi joint ? or get new springs
does that sound right ?

VIPERONE

28-09-2006, 18:02

£35 if you speak to Pete @ Greenwoods. They obviously saw Gunner coming.

Dave if your going down speak to Pete and tell him I sent you.

makes no difference to me, i paid with pennies i emptied out of my whisky jar.

hooligan that is a bit excessive.

I had my cat welded at both ends with new flanges angled at 45' and 180'
full middle piece and a decent silencer box + free decat so im sure what your having done should be alot less...

Powerflow charged me 80 for a similar mod . or go for a renault mid section.

alternatively you can buy a tig welding unit for £1000 and then the stainless tubing, flanges and a silencer box to go with it.
;-)

nyk

28-09-2006, 21:20