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Sweet15 · 12-02-2018, 03:14 PM

So, I've got all ordered and on the way.

Whipple, LT4 HPFP, LT4 injectors, DSX Aux fuel pump kit, Roto-fab dry CAI, Mighty Mouse CC, NGK 6509 plugs, and LS3 front seal.

So my question is about headers / exhaust. I have a 18' 2SS A8 vert w/NPP so I want to keep it kind of quiet. Had a 15' SS that was S/C and cammed with Stainless Works that was pretty loud, had to pull over to talk on the phone LOL.

So getting mixed opinions on needing headers / exhaust. Is it necessary; some say stock set up is pretty good up to about 700 wheel hp. As a vert I would want to get catted if I went with headers due to the fumes. I would like to get over 600 to the wheels, so I think I should be able to tune it between 8-10psi with the fuel upgrades, which should get me there or close ? Don't want to do meth or E85, will be tuning to 93.

I looked at TSP 2" w/ catted to NPP; however being a vert they suggested the 1 7/8 instead for fitment. Some other brands cat back/axle back won't even work with a vert from what I saw.

So, is it necessary or will the stock set up be fine ? No sure the word necessary is right. Maybe is it needed ?

Thanks all ...

12-02-2018, 03:14 PM	#1
Sweet15 Drives: 2018 2SS HBM Vert Join Date: Dec 2014 Location: WPB, FL Posts: 91	Exhaust really needed for S/C set up ? So, I've got all ordered and on the way. Whipple, LT4 HPFP, LT4 injectors, DSX Aux fuel pump kit, Roto-fab dry CAI, Mighty Mouse CC, NGK 6509 plugs, and LS3 front seal. So my question is about headers / exhaust. I have a 18' 2SS A8 vert w/NPP so I want to keep it kind of quiet. Had a 15' SS that was S/C and cammed with Stainless Works that was pretty loud, had to pull over to talk on the phone LOL. So getting mixed opinions on needing headers / exhaust. Is it necessary; some say stock set up is pretty good up to about 700 wheel hp. As a vert I would want to get catted if I went with headers due to the fumes. I would like to get over 600 to the wheels, so I think I should be able to tune it between 8-10psi with the fuel upgrades, which should get me there or close ? Don't want to do meth or E85, will be tuning to 93. I looked at TSP 2" w/ catted to NPP; however being a vert they suggested the 1 7/8 instead for fitment. Some other brands cat back/axle back won't even work with a vert from what I saw. So, is it necessary or will the stock set up be fine ? No sure the word necessary is right. Maybe is it needed ? Thanks all ...