alright ef hatch b16a with type-r cams ls tranny type-r intake ported with bbk TB been driving great no poblems filled with 89 oct tonight and a mile later it started bucking and the tach would jump 1K-3K when it started to buck pre ign? or what do you think ? also running LS obdo ecu right now

 

possibly the coil or ignitor...if you have access to another distributor, might wanna try it out....also, maybe bad gas.

 

I meant to say 87 oct i just noticed that.... but also it has a new dist. cap rotor button wires and idr plugs.... talk to one of the old owners that put motor in car and he said it did the same thing when he ran to tanks of 87 in it... so i will be putting one or two bottles of oct boost in it .....hope that is all that is wrong

 

Well if the Prior owner is admitting to problems on 87 that could be your problem, Has he had this thing tuned to run on 93 or something? Would make alot of sense..

 

Well it is running an ls coumpter obdo getting ready to change out for a pwo or pr3 also it have had as said some head work type r cams amoung so other things only about maybe 7k miles on the motor since put toghter also he said it is a higher comp. motor so i'm going to try that first if nothing there i will go into the dist and more