i have a jdm b18c with aem cai, 4-1, no cat, and greddy exhaust. I havent ran it at the track yet, but i want to get new springs before the spring cause of MAD wheel hop. So far, while on a roll, i have beat every LT1, LS1, 5.0, 4.6, 4.8, and a boosted gst running 12 psi without the n2o. The LS1's are the closest of the bunch. Most cars were stock except for bolton's.
I am figuring low to mid 14's and mid 13's with the n2o. but i wont know till spring time
hope this helps