Yeah, I'm using the Litespeed Y pipe right now. I was going to switch to ART pipes and the XYZ to keep cats, but I think with F/I, the HFC module might cause issues.
However, if you prefer the litespeed y-pipe, I'm willing to sell that instead, too, and I can just buy the resonated module. I'm still finalizing the purchase, so that's why I'm labeling this thread as a feeler on the off chance that someone else buys the kit first.
@mag_black: yeah, a tune is highly suggested to make back the power lost at the top end. However, you'll ok if you drive without a tune for a while, but you won't have as much power under the curve as you would with the right settings.
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