Hey Everyone I have a s13 sr20det, mods are
Sc61 turbo top mount external gate (18psi)
Greddy Intake manifold
780cc injectors w. walbro 255
z32 MAF
FMIC 3IN tubing
BC 264 cams I/E
Enthalpy tune for 20psi 8000rpm limit
SAFC2 Just to use a rpm and put full in certain spots where it need it

The problem I having is its breaking up around 6000 to 7000 A/F is good around 10.9 or 11.2 Sometime it does it and sometime it dont. I was thinking those 18 year old coils might be going. Anybody have an Idea?

Thanks