Quote:
Originally Posted by Fraxum
I might disagree. There is a 2" restriction in the exhaust stock I have been told more than once. I wonder is that in the stock header or in the first cat If it is the header then then an aftermarket shorty might help. If its the cat then don't bother we need a high flow stock cat.
Shorties, if it eliminates the 2" restriction. could be part of a mild bolton build with bigger TB, IM porting, E85, and aftermarket stock fitting cats. 11s for aure on a V8. The other thing is you would have to look at the power curve change if any and possible torque gains.
The problem with LTs is they ruin the sound of the car for me. Been there done that.
2016s are going off warranty and have the cheapest tuning cost...
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That makes no sense. The Shorty header OEM has no restriction. If the restriction is further back as you than the headers have no effect. The C6 OEM exhaust has a "squashed" section that has no effect on a stock motor. One of the reasons our Camaros sound so good is the tri-y OEM manifolds.
The Super Chevy article on the Blackheart shorty's shows a MINIMAL gain at best.
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2019 ZL-1 Acquired 4/23/21 at 6300 miles. Riverside Blue, A10, PDR. Traded in 2017 2SS with 6M and 32k miles. Continental Extreme Contact Sports. Now has 10,000 miles...
2012 Yukon XL Denali w/ 6.2 AWD