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Old 11-13-2011, 02:41 PM
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MoparMadness08 MoparMadness08 is offline
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Join Date: Sep 2009
Location: North Carolina
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Default Engine Pinging. 5.7

I noticed this weekend that my truck was making a hell of a engine noise. it sounds like a lifter or to much lash in a rocker arm. you really notice it if its around 2000 rpm and rolling into the throttle. If im just cruising and lightly press on the gas you'd think it was a rocker arm hammering the top of the valve. i do have a DSP with the 91 tune running 93 oct fuel. I also have a BFI intake. I also notice that it makes a popping or backfiring sound through the intake. The BFI is loud and maybe thats what im hearing. but it sure dont have any loss of power. if you lay into it you dont here any pinging noise. i may have just gottn a bad tank of fuel. I should mention that i was in the mountains this weekend in Boone, NC. elevation is only about 3300ft. not sure if that is causing any problems. Let me know what you guys think about this. any info would be great.
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DSP 91 Oct Tune, BFI Intake, 14" Magnaflow, 180 Stat, Lund Genesis Tonneau cover, Recon LED light bar, Rocky Mtn ATS 305/55/20,
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