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Project2062014

Made a de-cat with flexi .. just two bolt swap for cat 4 m.o.t time .

4-1 needs a flexi .

Less vibration with flexi less stress on manifold .

usher

I would get a new dognut gasket that fits or grind the flange flat and fit a flexi like mine after the flange but before the cat. Trust me you will be back under the car in a month lol

Project2062014

yup thats the one .The gasket was poor ! Didnt fit at all . made up a 5mm split with putty . I could not take any more off the inside .so tapped it on & it split . not much flex in it . if at all .

usher

looks like the origional flexi joint that came with it that has the dognut wire gaskett?? should be fine

Project2062014

Project2062014

usher

click the IMG link then paste

Project2062014

I've no centre silencer , looks tidy , how do I up load from photo bucket ?

usher

Only pic I can find of mine how I stopped all the issues from the engine moving too much and rattling the exhaust loose

Project2062014

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 .

usher

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

Project2062014

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 !

Project2062014

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 ,

usher

whats the issue with the sensor as mine went in with no mods etc and has worked fine ever since

Project2062014

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 ..