s1 is fine stay with it, I wouldnt go s2 they have been proven to be more sentive to knock because of the higher spark timing it provides. The pcm will retard timing more compared to s1 or s0. the only beneift you will get with s2 are the injectors. Most big turbo owner are on s0 or s1 there are very few with s2. There a waste of money if you ask me. Even when I was on stock turbo, I still thought s2 was a waste (this is my opinion). You can make the same power on or higher on stock turbo with the stock pcm (mod for mod tuning is one of the most important things to making power). I am still on stock pcm, my timing is still right around 26-28 with the 20g but I am spraying a shit load of meth though.
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Last edited by bnice01 : 03-29-2007 at 01:35 PM.
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