Fast Intentions exhaust is here! (continued)

scottIN · 07-06-2013, 06:34 AM

Mine hisses like crazy during decel when there is engine braking. So it's especially prevalent on hills. Some people say it's only for a few seconds, but mine will do it for 15-20 seconds on a hill by my house because I usually coast down it.I've never been able to find a leak anywhere (no black streaks or anything at any of the joints, and I would assume that if it was a leak you'd also hear it under load.

I've asked a few times and never really heard a straight answer as to WHAT is happening, just that it's because of the HFCs. I love the sound of the FI, but the hiss can be annoying, especially if you're in traffic and it does it every time you slow down. I've had a couple people ask me if I had a turbo because it sounds like a pop-off valve.

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07-06-2013, 06:34 AM	#11 (permalink)
scottIN Track Member Join Date: Aug 2011 Location: New Castle, Indiana Posts: 764 Drives: '12 370Z Rep Power: 55	Mine hisses like crazy during decel when there is engine braking. So it's especially prevalent on hills. Some people say it's only for a few seconds, but mine will do it for 15-20 seconds on a hill by my house because I usually coast down it.I've never been able to find a leak anywhere (no black streaks or anything at any of the joints, and I would assume that if it was a leak you'd also hear it under load. I've asked a few times and never really heard a straight answer as to WHAT is happening, just that it's because of the HFCs. I love the sound of the FI, but the hiss can be annoying, especially if you're in traffic and it does it every time you slow down. I've had a couple people ask me if I had a turbo because it sounds like a pop-off valve.