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Best Upgrade for 4.8 performance!

Re: Best Upgrade for 4.8 performance!

Postby meanbgreen » Oct 17 2012, 10:58pm

MAF?
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Re: Best Upgrade for 4.8 performance!

Postby Cole trickle 78 » Dec 03 2012, 3:25am

mass air flow
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Best Upgrade for 4.8 performance!

Postby BlackZ71Silverado » Dec 03 2012, 4:54pm

Butster wrote:Has anyone tried the performance chips on E-b@y they sell for about $30 think they go into or replace the MAF.


don't waste your money. all thosr thongs do is send a false afr reading and can cause engine damage.
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Re: Best Upgrade for 4.8 performance!

Postby Pinnacle » Dec 03 2012, 5:11pm

Nothing you can do unless you start ripping the engine apart, all that CAI, tuner etc etc wont do you any good, Im in the same boat as you with my 08.
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Best Upgrade for 4.8 performance!

Postby BlackZ71Silverado » Dec 03 2012, 5:49pm

Do yourselves a favor next time and don't get the 4.8L slug engine in a truck.
2010 Silverado 5.3 w/Z71 appearance pkg.
CAI tube
MBRP Exhaust
DiabloSport inTune
2" level/3" rear blocks

2008 Silverado 6.0 V-Max
GMPP CAI
GMPP Performance exhaust
DiabloSport Predator
2" level/3" rear blocks
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Re: Best Upgrade for 4.8 performance!

Postby Butster » Dec 03 2012, 11:14pm

I actually like the 4.8 it's a good step up from the 3.9 dodge I had. lol
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Re: Best Upgrade for 4.8 performance!

Postby jegto » Dec 10 2012, 3:36am

I bought a hypertech programmer on autoanything for $254 after their event code EVENTS15 and Hypertech's $100 sale. I couldn't pass up that deal, maybe I'll notice a difference. At this point my 2010 silverado crew only has an airaid smooth intake tube attached to the stock air box with a K&N stock size filter. After this tuner, I'm looking to get either true duals instaled with an X-pipe or just a single in / dual out; I'm not sure how much better the true duals (or worse) it should be over a single muffler.
Also, on this thread you guys mentioned a cam upgrade. How intense of a job is that?
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Re: Best Upgrade for 4.8 performance!

Postby Pinnacle » Dec 10 2012, 4:03am

How intense of a job is that?

intense
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Best Upgrade for 4.8 performance!

Postby SlkRick » Dec 10 2012, 7:25am

Supercharger...big initial cost but with a healthy engine and a lower boost setting the reading that I've done points to a safe 90-110 hp gain
2012 Silverado 5.3L

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Re: Best Upgrade for 4.8 performance!

Postby jegto » Dec 19 2012, 3:17am

So after driving around for a week and changing the tune program three times, the hypertech programmer was the most noticeable difference for my money. I kept the rev limiter at 5000, but increased the shift firmness to 75%, and shift points to -400, -300, -300.
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