Announcement

Collapse
No announcement yet.

good wee read about turbo :)

Collapse
This topic is closed.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • good wee read about turbo :)

    http://www.tercelreference.com/terce...st_theory.html
    very intrestin if want a good read dude n dudettes

  • #2
    interesting stuff , i couldnt understand half of it but im rearley under a bonnet .

    Comment


    • #3
      cheers dude :P

      Comment


      • #4
        good read so 3'' is the way forward PIPER FTW
        ''we do not quit modifying because we grow old,''

        '' we grow old because we quit modifying ''

        Comment


        • #5
          was i just actual read it all there no back pressure so decat sounds good to me people sayin will break iit and in that says no back pressure is better

          Comment


          • #6
            Originally posted by sweeney23 View Post
            was i just actual read it all there no back pressure so decat sounds good to me people sayin will break iit and in that says no back pressure is better
            well there was a good chap that used to get on here (luke H) was his user name... he looked after a few race car's ..so knew what he was talking about shame aint seen him on here in a while! was really good for infor and seemed a nice chap alway's willing to help out people ..and he said he decated his zorst as it gives better gains ..just put a bigger silancer at the end to quite it down a bit. but you would need to change it over every MOT
            ''we do not quit modifying because we grow old,''

            '' we grow old because we quit modifying ''

            Comment


            • #7
              Originally posted by VXR PAUL View Post
              well there was a good chap that used to get on here (luke H) was his user name... he looked after a few race car's ..so knew what he was talking about shame aint seen him on here in a while! was really good for infor and seemed a nice chap alway's willing to help out people ..and he said he decated his zorst as it gives better gains ..just put a bigger silancer at the end to quite it down a bit. but you would need to change it over every MOT
              thanks dude but do you know will it shortin the life of turbo or break other compnents of the car by doing this

              Comment


              • #8
                Could potentially cause the turbo bearings to wear quicker 'cus the exhaust gasses would pass through at a higher speed thus making the turbo spin faster. Can't see it would be worth worrying about though.

                I'm not entirely sure about the MOT thing either, do they actually check the car for a Cat or do they just test the emissions?

                Comment


                • #9
                  not got a clue dude well alot people say bad alot say good just not surer now to be honest and mot is emitons so duno what woudl happen there either

                  Comment


                  • #10
                    Originally posted by sweeney23 View Post
                    thanks dude but do you know will it shortin the life of turbo or break other compnents of the car by doing this
                    sorry bud carnt help you there... but sure some 1 with some knowledge will be along soon to clear things up..or put a new post asking what you would like to know..you dont get if you dont ask and there is some good peeps willing to help on here
                    ''we do not quit modifying because we grow old,''

                    '' we grow old because we quit modifying ''

                    Comment


                    • #11
                      De catting is not going to hurt your turbo in a noticable way. Why do you think turboed drag cars have front bumper side exit exhausts with no silencers/cats.

                      The only problem with decating on a standard ecu is that the lambda (oxygen) sensors will sense that there is too little air (too much fuel) as there is no cat to remove it. Because the ecu tries to keep lambda at 1, which it won't be able to do, it will put the engine in safe mode unless you can get around this (lambda sleeve or the like).

                      With an aftermarket ecu you can run a different set up to enable a decat.



                      With regards to MOT they don't check if you have a cat so long as you pass the emmisson tests. However you are very unlikely to pass without one, its very hard to pass even with a sports cat. Pre 1992 cars do not need to have a cat, but they have less stringent emmison levels to meet.
                      Last edited by Mark_VXR; 18 August 2010, 10:55 PM.

                      Comment


                      • #12
                        Surely if you have the car mapped properly with out a cat then you should be able to get it running as efficiently as is safe and the emissions shouldn't be too bad.

                        Comment


                        • #13
                          Originally posted by VXR PAUL View Post
                          sorry bud carnt help you there... but sure some 1 with some knowledge will be along soon to clear things up..or put a new post asking what you would like to know..you dont get if you dont ask and there is some good peeps willing to help on here
                          also people tht just want to argue if u know what i mean and say its pointless kinda thing so hope the gd 1s come along :P

                          Comment


                          • #14
                            Originally posted by Mark_VXR View Post
                            De catting is not going to hurt your turbo in a noticable way. Why do you think turboed drag cars have front bumper side exit exhausts with no silencers/cats.

                            The only problem with decating on a standard ecu is that the lambda (oxygen) sensors will sense that there is too little air (too much fuel) as there is no cat to remove it. Because the ecu tries to keep lambda at 1, which it won't be able to do, it will put the engine in safe mode unless you can get around this (lambda sleeve or the like).

                            With an aftermarket ecu you can run a different set up to enable a decat.



                            With regards to MOT they don't check if you have a cat so long as you pass the emmisson tests. However you are very unlikely to pass without one, its very hard to pass even with a sports cat. Pre 1992 cars do not need to have a cat, but they have less stringent emmison levels to meet.
                            realy usual info dude cheers

                            Comment


                            • #15
                              Originally posted by neil h View Post
                              Surely if you have the car mapped properly with out a cat then you should be able to get it running as efficiently as is safe and the emissions shouldn't be too bad.
                              Doubt it tbh - As already mentioned, people with a sports cat on a Remus and the like struggle to pass an MOT so not having one at all, especially on the VXR engine (quite high to start with in its standard form) I would very much doubt it would get anywhere near a pass.
                              Ignorance is temporary... Stupidity lasts forever.

                              Comment

                              Working...
                              X