i just did my dpf delete for my lmm and would like to get rid of the hissing nois, how do i get rid of it???? im using 5" MBRP turbo back with quadzilla stealth 2
I believe, correct me if I'm wrong, it is your EGR system that is making it hiss like that. Like said above, the best way to stop it is to use EFI live and stop the EGR from working.
It is not the EGR, although it does contribute a very small amount. Anything LLY+ has a variable turbo which commands a percentage of vane position even at idle in order to help throttle response. The percentage commanded depends on the year model. You can mess with these tables in EFI live. I dont know how much it actually improves your throttle response with the hiss sound, but i decided to leave mine alone. You can also turn off the EGR with EFI live. I actually like the noise, but the rumble is quite a bit louder than hiss. I would talk to Guy at Socal Diesel. He is the best out there. As for a "quick review".. that does not exist. But with EFI live you will be able to draw more power than you could ever dream of making with that quad- without the smoke and it still runs smooth like stock.
__________________ 2008 GMC Duramax 3/4 ton 4x4 CC SB Dark Brown Metallic-In dash nav, sunroof, rear dvd, leather (came with some wood too ).Socal Diesel ECM- 125hp tune with EGR off, DPF off, Speed Limiter off. custom 6in stacks 1in apart on pass. sideResonator blocked off 2004.5 Ugly Red Dodge 1 ton DRW -Full billet auto with triple disk torque converter, Quad Race Box, Crazy larry, F1 flux 2 injectors, PPE 150gph adj pump with GDP filters, Volant stg 2, 5 inch turbo back with 9 inch black tip 1995 Desert Copper Ford F-350 Single Cab Long bed- Mint with just a few mods, Bullhauler stacks and 305 BFG MTs 2004.5 white lly zf-6 flatbed dually mp-8,ppe race valv,s&b stg2,resonator blocked off,leds everywhere, muffler and cat delete
Hissing from the tail pipe or from somewhere else? Are you talking about turbo hiss? A straight pipe from the turbo will sound like a hair dryer, won't it?
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).Socal Diesel ECM- 125hp tune with EGR off, DPF off, Speed Limiter off. custom 6in stacks 1in apart on pass. side
Resonator blocked off
-Full billet auto with triple disk torque converter, Quad Race Box, Crazy larry, F1 flux 2 injectors, PPE 150gph adj pump with GDP filters, Volant stg 2, 5 inch turbo back with 9 inch black tip
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