i have a 99' GS-R, all stock except for a drop in aem filter and coilovers...only had 80k miles ...well lately it had been stuttering when going into the 6k secondary intake thing, and bucking...

today i went WOT , and after 6k it stuttered, bucked and i heard a pop...check engine light came on and i could not rev past 5k on any gear...

continued my way on the the mall of georgia, came back and it was revving fine but check engine light was still on and no vtec...whats up with this ****??

any help is greatly appreciated