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For those of you with the 4.8, what have you guys bolted on for those extra horses/torque? And is there any particular vendor/site that you use regularly? I'm new to ...

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4.8 Mods

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4.8 Mods

Postby Hoseman1553 [OP] » Nov 17 2010, 3:46am

For those of you with the 4.8, what have you guys bolted on for those extra horses/torque? And is there any particular vendor/site that you use regularly? I'm new to the silverado world switching over from a Pontiac so i'm trying to get my feet wet here.
2008 Chevy Silverado 1500 Crew Cab-stock
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Re: 4.8 Mods

Postby aksierra11 » Nov 19 2010, 4:15pm

How much are you looking to get out of the motor? Can always start with replacing the stock filter with a K&N or even getting a CAI. Do that with an exhaust and a tune and it will be a whole new truck. I either get parts locally or have used www.stylinconcepts.com quite a bit.
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Re: 4.8 Mods

Postby Fraydknot » Nov 23 2010, 8:11pm

I installed the Nelson Performance tune and it is freakin great!!!! NelsonPerformance.com out of Texas.
It replaces your stock ECM/TCM (which will void your warranty), but for the life of you owning the vehicle all updates are free. As far as a CAI you will not get a MPG or horsepower difference unless your tune is set up for it. It will sound different, but if the computer is not looking for it it won't change your air fuel mixture.
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Re: 4.8 Mods

Postby aksierra11 » Nov 23 2010, 10:05pm

The stock ECU will notice if you add a CAI or exhaust and make changes they just wont be as drastic as if you have a custom tune set up for it.

I used Nelson on my previous truck and worked out well, still no substitute for having someone hands on tune it.
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