HELLO IM NEW TO THIS BUT IT WAS RECOMENDED BY A MATE, AND SAID ITS QUITE HELPFUL
IM NOT SURE HOW THIS IS DONE BUT HERE WE GO

I OWN A 4X4 SAPHIRE COSWORTH WHICH IS RUNNING A STAGE 2 CONVERSION
IVE BEEN HAVING PROBLEMS WHERE THE REV COUNTER FLUCTUATES WHILST DRIVING WHICH CAUSES A JERK WHEN THE BOOST COMES IN
I HAVE TAKEN IT TO THE GARAGE WHERE PEOPLE WHO DONE THE CONVERSION ON IT. FIRST OF ALL THE HT LEADS WERE REPLACED, GROUP A IGNITION COIL, . THE COSY WAS RUNNING GOOD BUT 5-6 MONTHS TIME THE SAME PROBLEM HAS COME BACK. TAKEN IT BACK TO GARAGE AND THIS TIME THE IGNITION AMPLIFIER HAS BEEN REPLACED WITH A NEW ONE. COSY RUNNING GOOD. 5-6 MONTHS ITS SAME HAS BEFORE.
HAS ANYONE HAD A SIMILAR PROBLEM?