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: Noise from turbo after about 2300 rpm. Dmaxowner 01-14-2005, 11:40 PM Just put in AFE stage 2 pro 7 cold air intake. Turbo sounds great, but makes an odd sound when really stepping on it. More of a howling noise. Still pulls great though. Just wondering if this noise is coming from Turbo? 04 LB7 white crew 4" banks monster/turbo back edge juice attitude 285 bfg afe pro guard 7 love the DURAMAX!! machoosh 01-16-2005, 12:58 PM All i can recommend is take it to your dealer and have the service manager take it for a drive, better safe than sorry :cool: GMC-2002-Dmax 01-16-2005, 01:37 PM That noise is turbo whistle, you really hear the turbo with the AFE on it.......the stock intake really keeps it quiet. I would suggest you swap back to stock and see if it sounds normal...... I am sure it is fine. T:cool: NY Just put in AFE stage 2 pro 7 cold air intake. Turbo sounds great, but makes an odd sound when really stepping on it. More of a howling noise. Still pulls great though. Just wondering if this noise is coming from Turbo? 04 LB7 white crew 4" banks monster/turbo back edge juice attitude 285 bfg afe pro guard 7 love the DURAMAX!! duramax_kid21 01-16-2005, 09:57 PM at what pressure does you start to hear noise. i think i have a similar problem but i know the noise i hear only occurs between 15-20 psi. i can hear the turbo spool but then i get that noise something like your describing. dgcHD 01-17-2005, 05:52 PM i noticed a howling noise coming from my turbo when under load at about 15000 miles, took it to dealer and they said bearing was going out so they replaced turbo. truck is stock except for 6in lift and 35s | ||