I have compared data logs from my slightly modified R33 GTST 95 model Skyline to almost stock R33 GTST 95 model. The almost stock car is faster and only has a HKS pod filter, high flow cat and higher boost (about 12 PSI). I have full 3” exhaust (dump pipe with separate wastegate pipe), high flow cat, ARC front mount intercooler, HKS pod filter, higher boost (about 12 PSI). Both use stock ECUs without any piggy backs. My car made 200rwkw on the dyno but is still slower.
Have a look at the timing graph, my timing drops to 5 deg where the timing on the stock car is still in the 19s. That area is not in the knock map so I believe its due to the higher air flow 4.8 V compare to the stock car 4.5 V. What do you all think?
http://home.iprimus.com.au/tkolo/datalog.htm