Improve RS2 intake/exhaust

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  • MarT2
    S2Forum Enthusiast
    • Feb 2006
    • 175
    • Country: Spain

    #1

    Improve RS2 intake/exhaust

    Hi people!

    I have a stock ADU engine (turbo, ecu, injectors, camshaft, camshaft pulley, etc).

    I would like to improve the intake and exhaust system. What is the best way to do it?

    I think in a supersprint complete exhaust and wagner intake manifold and intercooler kit.

    How much power can I obtain with it? Or is innecessary an the best option is the same that a stock RS2?

    What is the best option for exhaust manifold? I actually use a RS2 replica (plazacomplex). You recommend me change it for a OEM RS2 EM? Or better a RS2 EVO from wagner?

    I remember you that is for a stock RS2 engine, with a good chips from MRC.

    Thanks!

    PD: Sorry for my english, i'm very bad spelling it! ;D
  • GazzaG60
    S2Forum Freak
    • Mar 2007
    • 4133
    • Country: United Kingdom

    #2
    hi

    i would not bother with the wagner inlet unless you want lots more power.

    id change the rods if you are going to push the rs2 turbo to the limit.

    for the exhaust it depends on how much noise you want. supersprints have always been well made but a full 3" with 1 box will give more power. maybe hard to justify on a small turbo like the Rs2 but it would help non the less.

    exhaust manifolds are another area for balance. if you are staying with the rs2 turbo then it makes sense to stay with the rs2 manifold. balanced together from the start.

    your gonna be looking at 350hp or so and lots of torque. it not worth shooting for 400hp at that level. that extra 50 wont make a lot of difference. gotta shoot for 450 for the next worthwhile stage i feel and thats then wagner and bigger turbo etc.

    my 2p

    Comment

    • Rusty
      Super Moderator
      • Jun 2004
      • 18953
      • Country: United Kingdom

      #3
      As above, 3" turbo back exhaust to the noise level you want. I'd go Wagner IM purely because it will make a difference and is there for more power, efficiency is worth it. If you're staying RS2 turbo then EM, cams and rods are all fine. Ported and Polished head is agood plan too
      Cheers'en, AndyC
      1994 ABY Coupe - Projekt Alpinweiss

      Comment

      • Jamo
        Retired OG Mod
        • Mar 2004
        • 21750
        • Country: United Kingdom

        #4
        Wagner intake or reverse manifold is a must, it does not make more power but reduces lag and inlet temperatures which can be seen in up to 500 rpm less turbo spool.

        Comment

        • GazzaG60
          S2Forum Freak
          • Mar 2007
          • 4133
          • Country: United Kingdom

          #5
          id agree with the 500rpm spool. i thought a rsd2 turbo spooled low anyway? but on stock everything id save my money, keep my crusie control and bonnet plastics and save a dint in the underside too. advantage for you is no cable hassles being lhd.

          he said the engine is stock and staying that way.

          just going from experi of wagner pro's and con's

          Comment

          • Rusty
            Super Moderator
            • Jun 2004
            • 18953
            • Country: United Kingdom

            #6
            MRC high boost map is supposed to be 10/10 at the mo too
            Cheers'en, AndyC
            1994 ABY Coupe - Projekt Alpinweiss

            Comment

            • Jamo
              Retired OG Mod
              • Mar 2004
              • 21750
              • Country: United Kingdom

              #7
              Reduction in turbo lag has no cons IMO, MRC high boost chip another good shout, full 3" exhaust

              If you look above he's using a replica manifold not a true RS2 one. If your up for changing it again Wagner one is a good choice for future proofing but to be honest if your going to be running a stock setup (missed that) then just get the MRC chips and see how you like that.

              Comment

              • MarT2
                S2Forum Enthusiast
                • Feb 2006
                • 175
                • Country: Spain

                #8
                Then you recommend me change the RS2 replica EM for a OEM RS2 EM? Or the replica EM is well?

                Isn't the supersprint full 3" exhaust? What are the differences between supersprint and a wellmade full 3" exhaust?

                You recommend the wagner inlet or better the stock inlet? My S2 don't have cruise control.

                Finally, is necessary change the rods or the stock rods are good?

                How much power can I obtain with this configuration? 380cv is possible?

                Thanks

                PD: I don't understand this phrase:
                "your gonna be looking at 350hp or so and lots of torque. it not worth shooting for 400hp at that level. that extra 50 wont make a lot of difference. gotta shoot for 450 for the next worthwhile stage i feel and thats then wagner and bigger turbo etc."
                Sorry

                Comment

                • Acidburn
                  S2Forum Obsessed
                  • Jun 2007
                  • 13459
                  • Country: United Kingdom

                  #9
                  supersprint from what i've read is 2.75 d/p

                  depends what power your after, if your just going to go mrc remap then you don't need rods but if your going for max power then yeah you will need some.

                  3 inch will flow better but probably be louder by a bit.

                  Comment

                  • MarT2
                    S2Forum Enthusiast
                    • Feb 2006
                    • 175
                    • Country: Spain

                    #10
                    Originally posted by Acidburn
                    supersprint from what i've read is 2.75 d/p

                    depends what power your after, if your just going to go mrc remap then you don't need rods but if your going for max power then yeah you will need some.

                    3 inch will flow better but probably be louder by a bit.
                    I'm searching for 360-380cv.

                    Comment

                    • Jamo
                      Retired OG Mod
                      • Mar 2004
                      • 21750
                      • Country: United Kingdom

                      #11
                      Supersprint is 2.75 inch like the OEM system.

                      If you want to spend the money, Wagner Inlet and Wagner Exhaust manifold. 3" downpipe and single sports cat, MRC high boost chip will work with stock rods AFAIK.

                      That will give you the power you want with minimum spool.

                      Comment

                      • MarT2
                        S2Forum Enthusiast
                        • Feb 2006
                        • 175
                        • Country: Spain

                        #12
                        Originally posted by Jamo
                        Supersprint is 2.75 inch like the OEM system.

                        If you want to spend the money, Wagner Inlet and Wagner Exhaust manifold. 3" downpipe and single sports cat, MRC high boost chip will work with stock rods AFAIK.

                        That will give you the power you want with minimum spool.
                        I was thinking that the wagner EM and full 3" exhaust is too big for stock turbo. Isn't it?

                        Comment

                        • Rusty
                          Super Moderator
                          • Jun 2004
                          • 18953
                          • Country: United Kingdom

                          #13
                          Nah, it's perfect It's arguably too big for S2 but not for RS2, should give some great gains like S2Avant has seen on his RS2 spec S2 Avant.
                          Cheers'en, AndyC
                          1994 ABY Coupe - Projekt Alpinweiss

                          Comment

                          • Jamo
                            Retired OG Mod
                            • Mar 2004
                            • 21750
                            • Country: United Kingdom

                            #14
                            Originally posted by MarT2
                            I was thinking that the wagner EM and full 3" exhaust is too big for stock turbo. Isn't it?
                            No it's a perfect match

                            Comment

                            • GazzaG60
                              S2Forum Freak
                              • Mar 2007
                              • 4133
                              • Country: United Kingdom

                              #15
                              well you dont have too much to worry about if you dont have cruise.

                              the wagner works well. i felt my standard inlet feel like it was near the limit around the 400 mark. the wagner inlet reduced spool a little due to piping and not cool air although unless you can fill it air velocity reductinos take away some of the benifits.. when at 4k upwards theres lots of air flowing far too fast to gain temperatures from warm engine parts. same principle appllies with cone filters.

                              personally id do the exhaust and manifold and put the money into rods so you can get the most out of the turbo if its right that rs2's can bend rods. stock rods are crap. one way to help them is to fit ford 289 ARP bolts. these handle a few more revs and a bit more power. i got a set for 2 16v engines (289 is a v8) so you get a cheap deal. easier to fit scats. well neither is easy.

                              id stay with the stock inlet unless a bigger turbo is on the way. i like a bit of lag anyway.

                              each to their own on this one.

                              PD: I don't understand this phrase:
                              "your gonna be looking at 350hp or so and lots of torque. it not worth shooting for 400hp at that level. that extra 50 wont make a lot of difference. gotta shoot for 450 for the next worthwhile stage i feel and thats then wagner and bigger turbo etc."
                              Sorry

                              what im saying is that it takes a fair few hp to make a difference at this level but around the 380 mark is where you need to spend to see the next noticable improvement at around 450-500hp.

                              Comment

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