hey guys,

i been having this problem ever since i did the rebuilt. I put about 3-3.5k on the motor so far. So i never actually punch it to redline and found out at steve kan tuning session that im having ignition breakup. The car in 3rd gear would start to sputter within 5-6k and wouldnt go higher. So we replace the coil, change the spark plug to 9s, check the injector if they were stuck , check ground wire , check fuel pump , check crankshaft position sensor and still no luck. what else could be the problem? My mod list is in my signature. thank in advance for any help.

 

coil harness. my primary coil wire werent even attached in the connector, it was just arcing over. mazda made an updated coil harness that didnt have the ground wire in it. if yours is old an crispy i would suggest you look into one.

 

^ will do. Also i change the fuel filter. any other idea?

 

It seem to be alil breakup and pass 6k if I rev slow but if I wot it breakup pretty bad. I gotta still checkup on the harness and maybe replace the coil. hope that the problem. Will update u guy after I check those things. Thx for all the help

 

I just dynoed and had the same problem. I have a new tII coil, coil harness and HKS DLI on the way.

 

http://www.mwignitions.com/

 

How much boost are you running? I have the same problem when I run more than ~13 psi on stock non-seq turbos.

 

Hi, may I just ask what solved this for you?

 

Post was from 14 years ago and most likely they moved on.....

Dale