Loud blowoff valve

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  • Big Lee M
    S2Forum Fiend
    • Jun 2007
    • 2571
    • Country: England

    #16
    You could use a Forge splitter valve, the are atmosheric and recirculating and you can change them 25/75 and though to 75/25 so it won't mess with the car. Nothing wrong with a valve if they sound good, each to there own I bet a lot of people who say they are chavy and ricer have had one at some point!

    It won't mess with the engine management system at all. You can fluctuate it between 25% and 75% either way
    Last edited by Big Lee M; 25 March 2012, 18:50.
    Just some finishing touches to do now

    Comment

    • |CL|NIKI
      S2Forum Addict
      • Jun 2008
      • 380
      • Home: Bulgaria Current: United Kingdom

      #17
      Originally posted by Deception
      OK, that explains quite a bit. This may be a stupid question but are there any loud recirculating valves?
      Verno che si nov no v Bg ima mnogo hora koito biha ti pomognali.

      When/If You put Maf after turbo - You can put very loud BOV, when is it on a stock place - just forget about any changes/repairs . For stock car up to 300 engine Hp its not necessary anything stronger/harder/forged/expensive/race/tuned than what is on the car. I was with stock rods/pistons up to 500hp. They(pistons) will handle even more.
      Cheers mate.
      800HP 800++Nm

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      • JP
        S2Forum Extremist
        • Mar 2007
        • 1858
        • Country: United Kingdom

        #18
        I use a stock 710N that dumps to atmosphere as my MAF is on the pressure side near the throttle body it doesn't effect fuelling.

        Between the straight through 3" sidepipe with no mufflers the screaming whistling of the induction through the turbo and a blow of sound so loud it scares the pants of the idiot women driver in the convertible infront of you there is absolutely no subtlety at WOT.

        However drive normally and the 3" bypass closes and goes through stock backbox. The turbo doesn't need to make positive pressure so all induction whistling and noisy dumps (sniggers) dissapear into a stock sounding luxury motor. So family sleeper by weekday and raging monster on trackdays. Best of both worlds but took a lot of effort to make it all work properly without effecting the running of the car.
        UrS6 Stroker + HTA3586 =

        Comment

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

          #19
          I ran a GFB adjustable valve for a bit and the car ran ok with it on minimum vent to atmosphere but it wasn't as good as a recirculating valve and was crap on full atmosphere, so I sold it and refitted my Forge 007. You can increase noise with airbox mods or a cone filter
          Cheers'en, AndyC
          1994 ABY Coupe - Projekt Alpinweiss

          Comment

          • Deception
            S2Forum Fanatic
            • Feb 2012
            • 63
            • Country: Bulgaria

            #20
            Originally posted by Big Lee M
            You could use a Forge splitter valve, the are atmosheric and recirculating and you can change them 25/75 and thought to 75/25 so it won't mess with the car. Nothing wrong with a valve if they sound good, each to there own I bet a lot of people who say they are chavy and ricer have had one at some point!
            You mean it won't mess at all or it will mess a bit?

            Originally posted by Rusty
            I ran a GFB adjustable valve for a bit and the car ran ok with it on minimum vent to atmosphere but it wasn't as good as a recirculating valve and was crap on full atmosphere, so I sold it and refitted my Forge 007. You can increase noise with airbox mods or a cone filter
            Is the Forge 007 nearly as loud as a loud BOV? I am not sure I want a cone filter as it will suck hot air from the engine compartment...
            Audi UrS6 Avant '96 with RS2 mods

            Comment

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

              #21
              You don't want a cone filter but you do want something that will effectively act like a boost leak

              A properly shielded and cold air fed cone filter is as good as an airbox, something like a BMC CDA will do a good job. 007 is a recirculating valve and is no louder than OE, it's the airbox mods that allow the noise to be heard due to less damping by the OE box, even just a panel filter will allow more noise.
              Cheers'en, AndyC
              1994 ABY Coupe - Projekt Alpinweiss

              Comment

              • Big Lee M
                S2Forum Fiend
                • Jun 2007
                • 2571
                • Country: England

                #22
                I've just edited it so I hope it is a bit clearer?
                Just some finishing touches to do now

                Comment

                • Deception
                  S2Forum Fanatic
                  • Feb 2012
                  • 63
                  • Country: Bulgaria

                  #23
                  OK, what if I fit in a K&N cone air filter and shield it and a Forge Splitter valve? So this way if I dump 75% of the pressure in the inlet, those 25% left will be enough to keep the MAF in check and avoid fueling overinjection?
                  Audi UrS6 Avant '96 with RS2 mods

                  Comment

                  • QuattroFever
                    S2Forum Extremist
                    • May 2006
                    • 1360
                    • Country: United Kingdom

                    #24
                    Originally posted by Rusty

                    ...something like a BMC CDA...
                    wow, I had one of those years back what a pain in the wallet that was! Worked great but I just couldn't justify it and took it back like a tight Asre
                    Volcano ABY coupe

                    Ant

                    Comment

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

                      #25
                      Try the filter first and see what you think.
                      Cheers'en, AndyC
                      1994 ABY Coupe - Projekt Alpinweiss

                      Comment

                      • QuattroFever
                        S2Forum Extremist
                        • May 2006
                        • 1360
                        • Country: United Kingdom

                        #26
                        I have a cone filter setup for sale if you want. Not after much for it. Pm me.
                        Volcano ABY coupe

                        Ant

                        Comment

                        • prj
                          S2Forum Zealot
                          • Mar 2010
                          • 6308
                          • Country: Estonia

                          #27
                          Originally posted by Deception
                          OK, what if I fit in a K&N cone air filter and shield it and a Forge Splitter valve? So this way if I dump 75% of the pressure in the inlet, those 25% left will be enough to keep the MAF in check and avoid fueling overinjection?
                          I have to ask you one question.
                          Is some sort of ricer sound worth making your car slower?

                          Because fitting a cone filter will make your car slower, as it'll suck hot air from under the hood, unless you make a proper CAI.
                          Also, if you fit a cone filter on stock MAF, it won't read right, so your car won't run quite right.
                          Finally, dumping any excess air to the atmosphere will make your car slower through the gears.
                          http://tuner.ee - http://www.facebook.com/tuner.ee

                          Comment

                          • Deception
                            S2Forum Fanatic
                            • Feb 2012
                            • 63
                            • Country: Bulgaria

                            #28
                            Thanks for all the replies so far, guys!

                            Originally posted by prj
                            I have to ask you one question.
                            Is some sort of ricer sound worth making your car slower?

                            Because fitting a cone filter will make your car slower, as it'll suck hot air from under the hood, unless you make a proper CAI.
                            Also, if you fit a cone filter on stock MAF, it won't read right, so your car won't run quite right.
                            Finally, dumping any excess air to the atmosphere will make your car slower through the gears.
                            Well, here's the story... My car currently looks very plain. Someone might as well think it's an A6 2.0 16V Avant. Unless, of course, they're more Audi-knowledgeable and take note of the inflated fenders of the S6...
                            Yes, it will run slower. But have you thought by how much? I think it will be barely noticeable if at all. Only the stopwatch will make the difference... The turbo makes pressure instantly even if all air is dumped.
                            Last edited by Deception; 25 March 2012, 19:53.
                            Audi UrS6 Avant '96 with RS2 mods

                            Comment

                            • QuattroFever
                              S2Forum Extremist
                              • May 2006
                              • 1360
                              • Country: United Kingdom

                              #29
                              Needs heat shielding but as long as the maf has the mesh inserts and it's an oilless filter it should be ok.
                              Volcano ABY coupe

                              Ant

                              Comment

                              • prj
                                S2Forum Zealot
                                • Mar 2010
                                • 6308
                                • Country: Estonia

                                #30
                                Originally posted by QuattroFever
                                Needs heat shielding but as long as the maf has the mesh inserts and it's an oilless filter it should be ok.
                                It's not, you need a tube between the MAF and the filter. If you just stick a cone onto the stock MAF, you'll get wonky readings.
                                BTDT many times.
                                http://tuner.ee - http://www.facebook.com/tuner.ee

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