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 Posted: Mon Apr 07, 2014 10:25 pm |
 
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Joined: Apr 01, 2014
Posts: 668
Trade Rating: 0
Location: Cornwall
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hi. Whats the situation with .fitting a 4-1 with one sensor fitment .then fitting a de-cat pipe with one sensor fitment as well . no flex joint ? Is it possible to reset? the engine management if the light comes on remapping the car ? I am wanting to install a race manifold off fleabay & do not want any M.O.T issues or engine . maybe make two pipes ? with cat no cat ? get the cat welded in ? can anyone please help me ? Cheers B
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Posted: Tue Apr 08, 2014 7:52 am |
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Joined: Apr 02, 2014
Posts: 12
Trade Rating: 0
Location: Bournemouth
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i have a 4 into 1 stainless manifold and stainless de-cat pipe on my 1.6 8v with single lambda sensor into the manifold and it all works very well never had an issue with engine management lights etc not sure if this applies to other engine sizes...
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Posted: Tue Apr 08, 2014 11:31 am |
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Joined: Apr 01, 2014
Posts: 668
Trade Rating: 0
Location: Cornwall
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| Ryan324 wrote: |
| i have a 4 into 1 stainless manifold and stainless de-cat pipe on my 1.6 8v with single lambda sensor into the manifold and it all works very well never had an issue with engine management lights etc not sure if this applies to other engine sizes... |
Im going to get a flexi joint and keep the cat !! cut n weld !! done! with sensors and good 4 M.O.T .
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Posted: Tue Apr 08, 2014 3:09 pm |
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Joined: Mar 15, 2012
Posts: 327
Trade Rating: 0
Location: Essex
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it may set off the eml if you fit the fleabay ones as the lambda sockets are not angle-adjusted to compensate for the difference the lambdas should pick up in exhaust gases between the two points.....doesnt effect performance at all though,no limp mode because of it........just a pretty dash
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| Joined the GTi massive 10/1/13
Goodbye lairy Pugani (quicksilver 1.4)  | |
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Posted: Fri Apr 11, 2014 3:30 pm |
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Joined: Apr 01, 2014
Posts: 668
Trade Rating: 0
Location: Cornwall
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| Mr-Tigger wrote: |
| it may set off the eml if you fit the fleabay ones as the lambda sockets are not angle-adjusted to compensate for the difference the lambdas should pick up in exhaust gases between the two points.....doesnt effect performance at all though,no limp mode because of it........just a pretty dash |
how sure are you ?
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Posted: Fri Apr 11, 2014 4:30 pm |
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Joined: Apr 16, 2013
Posts: 676
Trade Rating: +1
Location: Blackburn
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Wouldn't bother with flexi pipes they will always end up leaking down the line
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| 1999 206 Gt... Gti180 inlet, Gti180 exhaust manifold, Gti180 injectors, Gti-6 throttle body, Custom Adapter pipe to mate the throttle body to intake, Gti180 alternator, Gti-6 ICV, Straight through stainless exhaust system, cat cams (apparently), Avo coilovers, short shift gear stick, stripped out with fixed back bucket seat and harness, flocked dash, momo steering wheel and D2 solid boss, real carbon cold air intake, Gti-6 front calipers and 288mm disks, rear drilled and grooved disks, morette headlights, sp bonnet grill 71,456 miles
2008 Audi A3 2.0 Tdi 170 | |
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Posted: Sat Apr 12, 2014 5:24 am |
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Joined: Jun 04, 2010
Posts: 1691
Trade Rating: +3
Location: northallerton
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it wont work without one you will eiher damage the head or manifold
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Posted: Sat Apr 12, 2014 7:52 am |
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Joined: Apr 16, 2013
Posts: 676
Trade Rating: +1
Location: Blackburn
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I dont have a flexi with my 180 manifold and decat.
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| 1999 206 Gt... Gti180 inlet, Gti180 exhaust manifold, Gti180 injectors, Gti-6 throttle body, Custom Adapter pipe to mate the throttle body to intake, Gti180 alternator, Gti-6 ICV, Straight through stainless exhaust system, cat cams (apparently), Avo coilovers, short shift gear stick, stripped out with fixed back bucket seat and harness, flocked dash, momo steering wheel and D2 solid boss, real carbon cold air intake, Gti-6 front calipers and 288mm disks, rear drilled and grooved disks, morette headlights, sp bonnet grill 71,456 miles
2008 Audi A3 2.0 Tdi 170 | |
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Posted: Sat Apr 12, 2014 9:32 am |
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Joined: Apr 16, 2013
Posts: 676
Trade Rating: +1
Location: Blackburn
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Muat be different with an aftermarket 4-2-1. Im almost certain mine was the 180 manifold and not an aftermarket one
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| 1999 206 Gt... Gti180 inlet, Gti180 exhaust manifold, Gti180 injectors, Gti-6 throttle body, Custom Adapter pipe to mate the throttle body to intake, Gti180 alternator, Gti-6 ICV, Straight through stainless exhaust system, cat cams (apparently), Avo coilovers, short shift gear stick, stripped out with fixed back bucket seat and harness, flocked dash, momo steering wheel and D2 solid boss, real carbon cold air intake, Gti-6 front calipers and 288mm disks, rear drilled and grooved disks, morette headlights, sp bonnet grill 71,456 miles
2008 Audi A3 2.0 Tdi 170 | |
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Posted: Sun Apr 13, 2014 3:34 am |
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Joined: Apr 01, 2014
Posts: 668
Trade Rating: 0
Location: Cornwall
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flexi is needed .will last a few years .. 2 1/2inch flexi over the cat pipe im going .. 4-1 manifold long pipes on it for better flow . as for the sensor angle adjusted .grind the socket down where it sits until the gasses flow across the sensor. simpols ..
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| If it aint broke dont fix it ! | |
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Posted: Sun Apr 13, 2014 1:11 pm |
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Joined: Jun 04, 2010
Posts: 1691
Trade Rating: +3
Location: northallerton
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whats the issue with the sensor as mine went in with no mods etc and has worked fine ever since
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Posted: Wed Apr 16, 2014 1:43 pm |
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Joined: Apr 01, 2014
Posts: 668
Trade Rating: 0
Location: Cornwall
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| usher wrote: |
| whats the issue with the sensor as mine went in with no mods etc and has worked fine ever since |
What size flexi did you use ? I've got 2 1/2 inch and a 61mm pipe to weld up , do you have the cat on ? Going to Cut cat pipe down flexi should fit over the pipe , weld up then 61mm pipe to the manifold pipe,that slots inside. The one holds the gasket , ,got new studs and bolts for manifold just incase ! On it 2mz ,, ! Whoop whoop ! No problem as of yet , just checking with ppl that have done it successfully so I know of any issues ,cheers B ,
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Posted: Thu Apr 17, 2014 3:28 pm |
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Joined: Apr 01, 2014
Posts: 668
Trade Rating: 0
Location: Cornwall
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It's fitted no flexi all new studs & bolts with cat ,The exhaust lower gasket that came with manifold and the two bolts didn't fit it ! Took me 9 hrs straight ! Back box is blowing & the new water pump is leaking from sum where so all back off to find the leak tomorrow , FFs , all running fine , drinking the juice was ok after remap , new throttle body & cambelt & it's defo drinking . Any info on the water pump leaking would be great , down side to the manifold is I've lost most of my backfire power , it's not poping and banging any more , did until 5 miles down road , it has stopped ,was a sharp crisp gun shot a couple every down shift !
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| If it aint broke dont fix it ! | |
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Posted: Fri Apr 18, 2014 1:54 am |
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Joined: Jun 04, 2010
Posts: 1691
Trade Rating: +3
Location: northallerton
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cant see why its stopped popping mine has always done it even with a std exhaust, i would expect issues with no flexi, you need on where the manifold ends and exhaust starts so before the cat, even if its a usniversal one on a 2 flat 2 bolt flange
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Posted: Fri Apr 18, 2014 1:58 pm |
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Joined: Apr 01, 2014
Posts: 668
Trade Rating: 0
Location: Cornwall
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Got a two bolt flange on . Is tight not much play . Car vibrates a lot ,, does pop n bang a little just not as it was .
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| If it aint broke dont fix it ! | |
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