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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Trumpet sound from Tial BOV



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      02-22-2024, 08:41 PM   #1
bilbobagends
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Exclamation Trumpet sound from Tial BOV

Tial BOV is making a trumpet/elephant like sound. Theres definetly a boost leak and my logs show a peak of 14ish psi with a target of 18.6 on mhd stage 2+. I took it to a local shop to have a smoke test done and nothing stood out. Threw a new vacuum line on the bov and checked the chargepipe connections and Im really not sure where its coming from.

Could it be the BOV itself? It sounds bizarre

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VRSF Chargpipe Tial BOV, VRSF 7.5" Comp IC, VRSF Catless DP, CSF Radiator, MHD Stage 2+ 93oct v10
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      02-23-2024, 08:06 AM   #2
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Quote:
Originally Posted by bilbobagends View Post
Tial BOV is making a trumpet/elephant like sound. Theres definetly a boost leak and my logs show a peak of 14ish psi with a target of 18.6 on mhd stage 2+. I took it to a local shop to have a smoke test done and nothing stood out. Threw a new vacuum line on the bov and checked the chargepipe connections and Im really not sure where its coming from.

Could it be the BOV itself? It sounds bizarre

Video:
Cant you get someone to press and release the accelerator while you listen out for it in the engine bay? Is it only happening under load?
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      03-04-2024, 09:39 AM   #3
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Meth bung on chargepipe?
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