Our stage-2 custom tune is rated at 600 HP on pump gas. We offer custom race gas files and custom re tuning via data logs when the 5 tune option is selected upon purchase.  This kit comes with our high flow X  design 2 muffler sport exhaust( custom made per client specs). We strongly suggest our 3.5″ or the 4.5″ Race  Intercoolers  and for more power upgraded VTG compressor wheels(Tial Zona 65mm or 63.5mm).  We can upload multiple tunes via our hand held flasher purchased separately.