there is 3 basic sounds. Mine is fully deleted and 5 inch strait. LOVE the sound.
rumble/v8 idle, vanes on turbo are around 8%-20% shut so 80% open thus less turbo sound and more open V8
hiss idle is when the vanes on the turbo are closed down to around 80% and 20% open. this spools the turbo some and makes the exhaust hiss and the turbo wissle some
then there is the sound of the turbo being spooled slightly, and you let off the throttle, and it whooshes back as the vanes move across the ehxuast flow form you being somewhat on it and letting off.
the last is the sound I think your hating. but that's interesting because comeing from a gear head, I love hearing the trubo sounds.
2007.5 LMM LTZ, lifted 6" on 22x12s and 35s, AMP Steps, DSP5, 5" MBRP down pipe back - (strait pipe) dumped & deleted, Nictain Cat Fuel Filter swap, Edge CST2 Monitor, W/EGT), ATS rear diff cover.
2007 C6 Z06, 754RWHP (Heads & Cam 427, Procharger @ 7lbs+meth)
Last edited by mittens; 09-11-2019 at 10:28 AM.