Well the title say's it all....My 94 Rx7 is bucking/bogging pretty bad under load above 3k+. The night before it ran perfectly and all I did when I parked it was remove the EGI fuse over night. When I drove it today to work it began to buck/bog like crazy only under load. I can drive it with about 20% throttle all the way to redline and but once I pass that 20% and im 3k+ it goes crazy. My mod's are pettit intake, pettit down pipe, M2 ecu, m2 medium intercooler. So far I changed my plugs but nothing. I don't understand how this happens!!!!! I guess it comes with the territory of owning a 7.

 

Problem solved.

 

so what was it? For those with the same problem

 

All I did was wire brushed all my grounds and removed all the oxidation. Turned it on and it was gone and it even idles better now haha.

 

i did the same thing. I also added an extra ground wire to my battery to the chassis of the car and cleaned out most of the lines on the driver side along with changing the spark plugs. however, i get some hesitation but only when my temperature is high. its not as bad as before. did your car ever died on you due to the hesitation and bogging while driving??