I may end up going with the 4"DP and exhaust. anyways I'm going to use a sc6152e, it's seen boost maybe 5 times. My younger brother used it on his sr20 but, he didn't have an EMS and injectors. I think it woulda been fine on stock ish @10psi but, he never gave me time to install my wideband. I just assembled my 84.5mm "tampa stock" LS/vtec but, don't have the funds to complete the setup rite now. I'm waiting to buy a tial 44mm and an ATI dampner. I'm hoping to complete it within a month and chalk(sp?) up another 500+whp honda in the bay area. then its time to break some stock axles.