Hondata

I HAVE A 96 CIVIC WITH A JDM B18B AND OBD1 P75 ECU WHEN I RUN THE CAR PAST 3500 RPM THE LIGHT GET BRIGHTER THEN DIMS DOWN I HAVE CHANGED THE BATTERY, ALTERNATOR, CHECKED THE GROUNDS. ANY ADVICE WILL BE APRECIATED

I HAVE A B18B WITH WET NX KIT CAN I RETARD THE TIMING FOR NITROUS USE PLANING ON SPRAYING 75 SHOT UNTIL ENGINE BUILT