TriStateTuners.com :: Home of Tristate Auto Enthusiast - View Single Post - Ported VF34 Wastegate on my WRX, now I have a constant hissing sound..??

2point4DSM · 12-12-2005, 10:41 AM

You won't hear a hiss coming from your wastegate. In fact, no one will hear a hiss from a wastegate. Ask G1GSX above, lol.

A leak at the wastegate, WITH an external dump sounds like an exhaust leak. A leak at the wastegate in a system that routes exhaust back into the main exhaust is not detectable at all, by ear!

The only way you can find if your wastegate is not sealing properly anymore is if the car lags more. (period) (no other way)

The hiss might be coming from your intake pipe or IC pipes. Even BOV, maybe.

Btw, you did remember to take the sock out of your turbo after you ported the compressor outlet, right, lol.

12-12-2005, 10:41 AM	#3
2point4DSM Tri-State Post Whore Join Date: Jun 2005 Member #505 My Ride: 08 Sienna Limited AWD, 07 John Deere riding mower, 03 Honda Pilot, 92 GSX iTrader: (0)	You won't hear a hiss coming from your wastegate. In fact, no one will hear a hiss from a wastegate. Ask G1GSX above, lol. A leak at the wastegate, WITH an external dump sounds like an exhaust leak. A leak at the wastegate in a system that routes exhaust back into the main exhaust is not detectable at all, by ear! The only way you can find if your wastegate is not sealing properly anymore is if the car lags more. (period) (no other way) The hiss might be coming from your intake pipe or IC pipes. Even BOV, maybe. Btw, you did remember to take the sock out of your turbo after you ported the compressor outlet, right, lol. __________________ - Wil 08 Sienna, limited AWD w/ laser guided cruise control, FTMFW!