Long tube headers vs Factory manifold sound 5.3 silverado 

No problem man!

I call it a “flamethrower” tune, the tune was done by Brian at Doughty Racing Engines back in Texas and he made it do it only above 3600 rpm and only if you tap the gas it’ll shoot flames. I think he said something about late timing and lots of fuel (don’t quote me on that) but I don’t do HPTuners so I wouldn’t know. But it is tuned yes.

This is simular to your 4.8 but has a longer stroke crankshaft so I'm assuming this will make a slightly different exhaust note alone not mention he said he has a custom tune

is it 3 inch all the way no mufflers or cats?

I still got it! It ain’t going nowhere, just too much snow on the ground to make videos with it. I used the factory tbi in tank pump, that’s what the fuel pressure regulator on the fender is for, to dial back the fuel pressure from 14 psi to about 5.5 psi

@@_chevy_stepside Oh wow it looks hella clean I don’t have a OBS but I have a 89 Z28 basically the same engine fuel pump and everything just in a coupe hatchback. I love your OBS though used to drive one but it was a 91 Sierra with a 5.3. Keep up the good work 👍

No sir I didn’t, on the 03+ trucks there’s no egr valve

Its best to delete your egr either ways. Im gonna delete mine soon because it just makes your intake temps higher

Yes

Uhhhh I think it’s stock in the front, 3.5” in the back, has drop shackles and no overload springs, sitting on 275/45/20 Nitto 420V’s

What I did is a catless factory Y pipe, 3” from the Y pipe back with a magnaflow magnapack and then out the back into the 4” dual angle cut tips

@@_chevy_stepside bro thank you so much I’ve been looking for that idea 😮‍💨🥵

It’s got a hot tune by Doughty Racing Engines out of Conroe Texas

Cry about it

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