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Well, you don't want to add too much turbulance to the air, so if you stick them back to back, one will make a vortex, the other will straighten it out. It's the best of both worlds! You can't go wrong!
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'13- '14
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Originally Posted by SteveL4446
I don't know anyone who's installed one on a vette. I have a friend who installed one on his truck. He said he thinks he would have gained more HP from installing STP stickers on his windows. I'd say spend your mod money on something else.
sounds about right... mighta gone for GTX since that is a john force product, and he makes more HP, and that must be due to the oil that is used
Clearly none of you all have first hand experience. My modifications include a tornado, hardened johnson rods, low friction muffler bearings, and cross drilled brake lines, and I've gained about 5mpg around town and a definite seat of the pants power improvement.
Believe me the Tornado did not improve anything. Try taking it out and see if it still gives you gains.
These mods are awesome! I did them too and picked up a solid 12rwhp. Add that to the 19rwhp I gained with my Type R sticker, it was money well spent
But Stephan,........Have you installed Purriott additive yet? It has to be worth at least 40 or 50 RWHP.
Purriott, refined from Yurzenn.....dug up from the earth in a Yurzenn Mine I seem to recall that the different kinds of Purriott are sorted by hand and eye on a Purriotic Table.