Take a look at my molten exhaust

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  • E30DriftMissile
    Grease Monkey
    • Aug 2012
    • 301
    #1

    Take a look at my molten exhaust

    Hey R3V got some interesting material for y'all to look at. I rebuilt my engine 2.7i dropped it in and was letting it idle on jack stands with megasquirt on auto tune and I looked under the car.

    What do you know my exhaust looks like it's going to melt a hole in my car

    Click image for larger version Name: IMG_8484.jpg Views: 1 Size: 48.5 KB ID: 7249386

    Is this normal? I'm running pressure rich about 10/11 afr. Needs more tuning.

    What do you guys think?
    sigpic
    Tags: None
    • rommaster2
      Member
      • Mar 2014
      • 89
      #2
      Define normal, you've already stated you are running pig rich and need to tune it so in essence you answered your own question.

      I'd say thats not out of the ordinary for an engine running super rich but i'd be interested in hearing others chime in since unburnt fuel getting into the exhaust then burning would be hotter then just ambient air thats hot heating up the exhaust.

        Comment

        • Northern
          R3V Elite
          • Nov 2010
          • 5036
          #3
          Roy's 24v was cracked out one time and decided it wanted to dump fuel while idling. Happened to look under the car and saw the aftermarket cat glowing bright orange and a second later it blew its honeycomb guts out the back of the car like a shotgun blast.

          So I'd say, yeah, tune your car.
          Originally posted by priapism
          My girl don't know shit, but she bakes a mean cupcake.
          Originally posted by shameson
          Usually it's best not to know how much money you have into your e30

            Comment

            • varg
              No R3VLimiter
              • May 2014
              • 3283
              #4
              Bye-bye catalyst.

              IG @turbovarg
              '91 318is, M20 turbo
              [CoTM: 4-18]
              '94 525iT slicktop, M50B30 + S362SX-E, 600WHP DD or bust
              '93 RX-7 FD3S

                Comment

                • E30DriftMissile
                  Grease Monkey
                  • Aug 2012
                  • 301
                  #5
                  Hahaha okay just wanted to make sure this wasn't an abnormality. The turbo exhaust is going on later so this is a temp solution to get the tune right. Thanks for the feedback northern!


                  Sent from my iPhone using Tapatalk
                  sigpic

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                    • Cayoncrusier93
                      Wrencher
                      • Jan 2013
                      • 204
                      #6
                      Originally posted by E30DriftMissile
                      Hahaha okay just wanted to make sure this wasn't an abnormality. The turbo exhaust is going on later so this is a temp solution to get the tune right. Thanks for the feedback northern!


                      Sent from my iPhone using Tapatalk
                      I'm no expert but, doesn't your exhuast play a role in setting up your tune? So if you tune now then change out your exhaust would you have to re-tune??

                        Comment

                        • ForcedFirebird
                          R3V OG
                          • Feb 2007
                          • 8300
                          #7
                          Originally posted by E30DriftMissile
                          Hahaha okay just wanted to make sure this wasn't an abnormality. The turbo exhaust is going on later so this is a temp solution to get the tune right. Thanks for the feedback northern!


                          Sent from my iPhone using Tapatalk
                          Originally posted by Cayoncrusier93
                          I'm no expert but, doesn't your exhuast play a role in setting up your tune? So if you tune now then change out your exhaust would you have to re-tune??
                          Turbo usually means a re-tune anyways ;)
                          john@m20guru.com
                          Links:
                          Transaction feedback: Here, here and here. Thanks :D

                            Comment

                            • E30DriftMissile
                              Grease Monkey
                              • Aug 2012
                              • 301
                              #8
                              Yea totally! I'm running it NA now so I can get used to tweaking ms. A lot less pressure when tuning AFRs NA then under boost


                              Sent from my iPhone using Tapatalk
                              sigpic

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