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#1
05-04-2018, 08:21 PM
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Intake flutter?
hi guys and girls.
Just had the STI on the rollers for a map tweak and now I'm hearing very audible turbo flutter, performance is fine though. Is this normal? It has a panel filter and I removed the inner wing snorkle some time ago. I think I remember hearing Dave's one similar although mine is not running that sort of power (340hp) Cheer Simon
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 Tein - Enkei - Cosworth - Toyo - H&S - RaceDynamix - Godspeed - Performance Friction - Hel - Pro-sport - OMP - HT Autos STI 2006 Blobeye 
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#2
06-04-2018, 06:58 AM
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When does it flutter on boost or lift off?
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter
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#3
06-04-2018, 09:23 AM
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The VF's can flutter, more so at part throttle than full throttle. Mines quite loud running 1.45bar peak and about 1.1 at part throttle. It's been doing it 12 years.
It's compressor stall as the turbo generated more air than the engine is consuming, so it backs up in the turbo to inlet path.
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#4
06-04-2018, 03:29 PM
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Thanks Scott.
it's on part throttle and full throttle but would make sense. Just panicking thinking something is wrong lol I may take you out in Scott on the next meet just so you can hear it if you don't mind? Cheers Simon
__________________
Tein - Enkei - Cosworth - Toyo - H&S - RaceDynamix - Godspeed - Performance Friction - Hel - Pro-sport - OMP - HT Autos STI 2006 Blobeye
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#5
06-04-2018, 05:26 PM
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if its a VF35 they are notorious for it, particularly once mapped
porting the wastegate housing can help
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 ASPerformance 0191-4103770 PELTOR, PFC BRAKES, PAGID MOTUL, FERODO, SPEEDLINE, TRS, MINTEX, PIAA, HELLA, TEIN, WHITELINE, SUPER-PRO, MILLERS OILS online shop!!
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