i recently put a jdm b15b vtec in my 92 auto dx . the engine did not come with the ecu so i used my dx ecu for the last month until yesterday when i got my p08. i installed it my self and had someone doublecheck it for me and it was installed correctly. the problem is that my vtec kicks in like it should but i have no real difference in power from my old ecu. i should be able to notice a difference from 102 hp to 130 hp. the guy i took it from also hooked up anoter vtec ecu and the same thing. im not throwing any check engine lights so i dont have a idea of whats wrong , i changed my feul filter because he told me that it could be the problem but still no difference, with the new moter and ecu i didnt get any more top speed than my old engine. is ther somewhere out there that can let me know whats wrong i would really appreciate it.