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Hey guys I have a 2008 Silverado 1500 4.8 liter engine. How can I get some more power out of this baby, I did put on a K&N CAI. I want to change the gears to 3.73's but would this void my warranty with the dealer? Does anyone have any good power chip stories to share? Thanks
 

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I'd start with some more simple bolt-ons, long tube headers (don't buy cheapies), cat-back exhaust and a Diablo Preditor or Diablo Trinity. The Trinity is a bit pricy but worth it. Check out there website at DiabloSport.com.
 

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My 08 4.8 is pretty stout I got a custom tune from wait4meperformance.com, K&N CAI Magniflow racing canister style muffler, And 100 shot of nitrous from dyno tune nitrous systems. Just orderd a set of pacesetter headers and I am doing a cam install and a stall when i get home from kuwait cam specs are 222-224-560-114lsa I cant wait my truck is very strong rite now i posted a video in the fuel and performance section.
 
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