KevinW

iTrader: (1)

i've changed my plugs, i'm running a single turbo T61 at 1bar and a power FC, oh and MSD box, now i dont know if my tuning is off or not but i dont want to pay for the time to tune if there is something else wrong. so just to give an example say at 1 bar completly floored i make 400 HP, these are just for example well the first 2-3 runs the car has a consistant pull but once the car gets nice and warm from 2-3 runs on the highway the 400 feels intermitant, like 400, 380, 400, 380 or somewhere in there all through the rpms starting at around 4800-5000 to redline , boost needle doesnt see to be fluctuating at all. this also happens on less boost so i dont think it's ignition breakup do to the high aount of voume. any other ideas?

HybridOne

yea thats about right. i have horrible missing in my car around 4800 to 5000 rpms the car jerks and blows a giant poof of black smoke....i am changing my plugs today. thae car came with a jacobs amplifier for the ignition system, but i'm skeptical about whether or not it was wired correctly.

David Beale

The only "feeling" I ever got was a loss of power or thrust increase. The real sensation is the sound. You can hear the engine missing.

KevinW

iTrader: (1)

well it starts at 4800-5000 all the way to redline, is this a common feeling of breakup? or is this something else

KevinW

iTrader: (1)

anyone else? please i really wan tmy car to run properly

RX794

Check your ignition coils.

KevinW

iTrader: (1)

i guess i'll search on how to do that

IRPerformance

iTrader: (41)

Sounds like it may be a bad coil. The mazda manual tells you how to check them.