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| 05-12-2014, 05:06 PM | #1 |
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Major
 
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siren whistle turbos?
I am fbo n54 and right after installing my catless downpipes I hear some thing like a siren whistle I have 56,000 miles. I been reading some say normal some say it's turbo failure. so what is it? It's a bit noticeable but not to loud
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MHD Custom Flash (E85) [Jake@MOTIV] / Vargas Stage 2 Turbos / Fuel it LPFP Stage 3+/ Moitiv Port Injection/ MMP Turbo Inlets/ 3.5 Tmap Sensor / ER FMIC /ER Chargepipe HKS-BOV / AA Downpipes / Agency Power Race mid pipes / Berk Technology race exhaust / BMW SSK / BC Forged Whees Toyo R888 tires / KW Club sport coilovers+KW Camber Plates / Spec stg2+Spec SMSFW/ APR Wing GTC200
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| 05-12-2014, 06:17 PM | #2 |
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Colonel
 
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Drives: 2008 135 blk, blk, step
Join Date: Jan 2009
Location: Atlanta, GA
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Garage List 1994 Porsche 968 Cab [0.00]
2017 AMG GTS [0.00] 1994 Porsche 968 Coupe [0.00] 1977 Mercedes 450SE ... [0.00] 2008 135 [8.00] |
I first noticed mine when adding a tune like 4 yrs ago. I rarely notice it anymore although I'm not sure if it got better or I just don't notice it anymore. Either way, it's caused no issues so to some degree it's normal.
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Injen, RR OCC, MadDad Whisper, donut spare, 19x8.5et43fr 19x9.5et45r Volk LE37's, rear fenders rolled/pulled, PSS4S 225/35fr 255/30r, KW V1's, AR coated catless dps, Cross strutbar, CF grills and license plate holder, iCarbon diffuser, ETS black anodized FMIC, M3 control arms, Quaife, ER chargepipe, ForgeDV's, Topspeed Custom Tune, V3sims, Braille, Andrey_GTA rear hub mod, Ebay Mstyle front bumper and performance style side skirts.
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| 05-14-2014, 06:29 AM | #4 |
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The Crowing
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Mine do that as well. And some wastegate rattle. They're still hitting boost targets so i figure they can't be failing.
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 2009 135i : BMS JB4 G5 ISO,CXRacing FMIC Kit,Injen Cold Air Intake,Evolution Raceworks Charge Pipe,Walboro Inline Fuel Pump, E85 BMS Backend Flash w/ 60% E85,BMS Meth injection (trunkmount),BMS dual meth nozzles,Spec stage 2+ clutch w/ steel SWFW,BMS Catless Downpipes,Berk Tech Race Axleback |
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| 05-14-2014, 08:33 AM | #5 |
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Major
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Nice to know this is normal
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MHD Custom Flash (E85) [Jake@MOTIV] / Vargas Stage 2 Turbos / Fuel it LPFP Stage 3+/ Moitiv Port Injection/ MMP Turbo Inlets/ 3.5 Tmap Sensor / ER FMIC /ER Chargepipe HKS-BOV / AA Downpipes / Agency Power Race mid pipes / Berk Technology race exhaust / BMW SSK / BC Forged Whees Toyo R888 tires / KW Club sport coilovers+KW Camber Plates / Spec stg2+Spec SMSFW/ APR Wing GTC200
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