genie extractors

[94calais]

hi all, looking at ordering genie extractors for my vy ss, just wondering if anyone has heard them on a 5.7litre and know if they sound good, i've already got a catback twin 2.5inch system done, thanks

 

[Darcon666]

What are you after from the car & whats the budget?

In simple terms regarding exhaust is:- Cat back is more for sound/noise < for performance, while Extractors/Headers + Cats is more performance < for sound/noise.

 

[94calais]

not to much of a budget, the original cats will be staying, i just needed extractors so i can get the mafless tune done which the guy said i should get before the tune gets done, i've seen a pair of genie extractors on ebay for $505 that will fit up to the original cats and oxy sensors, they're 1 5/8 primaries, 2 1/2inch outlet, by the looks of it they are 4 into 1s

 

[Darcon666]

1 5/8 primaries are a good size for stock engine's.
4-->1's good choice into 2½ outlet just check if they are short or long tubes.

Only suggestion is get the CATS as well as this will be your down fall. The stock cats on a LS1 are ~4-500cspi so the flow is crap and very restrictive. HSV cats are ~3-400cspi where aftermarket are from 300-->100cpi(I would go for 200cspi)

As for your tunner saying you need to do this for the MAFless tune.... Bull Fracken ****. You don't even need to do anything for him to re-tune it. All it is, is that he won't get too much of an increase if you don't also get the headers/cats at the same time... hell, he can even do a MAF tune if he is any good which I am sure he is.