If I read the dyno numbers correctly the car was 394 prior to the LT and o/r xpipe and after LT and o/r xpipe 424.
That is 30hp. The o/r x pipe was 15 of that, so the LTs are worth 15hp.
That is disappointing to me because while another 15hp would be awesome, for $1,000-$1,500 for the LTs and another $400 for the install that is $100-$125 / hp vs the $300 for my h-pipe and $75 for the install for the same 15hp at $25/hp.
Anyone try shorties and have before and after dynos?
Your not only getting the power benefit, but the sound benefit as well.
Different wheels, window tint, short throw shifters, they all add 0 hp per $$, but, there is still benefit there.