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Must upgrades before adding tunes

Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

Must upgrades before adding tunes

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Old 03-08-2019, 02:14 AM
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Default Must upgrades before adding tunes

I have a lly with a 5in straight exhaust. I have a edge tuner which Iím using for my extra gauges which I can add tunes when I buy them. What should I upgrade besides the fuel lift pump or is that good for now?
 

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