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
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 👍