#1: Fitting 4-1 race manifold (engine management ) Author: Project2062014, Location: CornwallPosted: Mon Apr 07, 2014 10:25 pm ---- 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
#2: Re: Fitting 4-1 race manifold (engine management ) Author: Ryan324, Location: BournemouthPosted: Tue Apr 08, 2014 7:52 am ---- 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...
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 .
#4: Re: Fitting 4-1 race manifold (engine management ) Author: Mr-Tigger, Location: EssexPosted: Tue Apr 08, 2014 3:09 pm ---- 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
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 ?
#6: Re: Fitting 4-1 race manifold (engine management ) Author: 206gt160, Location: BlackburnPosted: Fri Apr 11, 2014 4:30 pm ---- Wouldn't bother with flexi pipes they will always end up leaking down the line
#7: Re: Fitting 4-1 race manifold (engine management ) Author: usher, Location: northallertonPosted: Sat Apr 12, 2014 5:24 am ---- it wont work without one you will eiher damage the head or manifold
#8: Re: Fitting 4-1 race manifold (engine management ) Author: 206gt160, Location: BlackburnPosted: Sat Apr 12, 2014 7:52 am ---- I dont have a flexi with my 180 manifold and decat.
#9: Re: Fitting 4-1 race manifold (engine management ) Author: 206gt160, Location: BlackburnPosted: Sat Apr 12, 2014 9:32 am ---- Muat be different with an aftermarket 4-2-1. Im almost certain mine was the 180 manifold and not an aftermarket one
#10: Re: Fitting 4-1 race manifold (engine management ) Author: Project2062014, Location: CornwallPosted: Sun Apr 13, 2014 3:34 am ---- 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 ..
#11: Re: Fitting 4-1 race manifold (engine management ) Author: usher, Location: northallertonPosted: Sun Apr 13, 2014 1:11 pm ---- whats the issue with the sensor as mine went in with no mods etc and has worked fine ever since
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 ,
#13: Re: Fitting 4-1 race manifold (engine management ) Author: Project2062014, Location: CornwallPosted: Thu Apr 17, 2014 3:28 pm ---- 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 !
#14: Re: Fitting 4-1 race manifold (engine management ) Author: usher, Location: northallertonPosted: Fri Apr 18, 2014 1:54 am ---- 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
#15: Re: Fitting 4-1 race manifold (engine management ) Author: Project2062014, Location: CornwallPosted: Fri Apr 18, 2014 1:58 pm ---- 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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