johnnyboy

hi i have a 89GT convertble 5 speedwith trick flow H/I/ my cam is a X303 the lobe seporation is 107 and i have 24lbs injectors with a 70mm mass air and70mm tbdy. i cant get it to idle under 1100 with out it dieing...should i have it dyno tuned and how much will it help and the cost. Or can anyone tell me y it doing this?

Joel5.0

You can set it to idle at 750 rpms (I've set a few, including my carbie), but you have to make sure you don't have any problems (EEC failure codes), or fix the ones currently present + key calibrations are done right (base idle reset, timing, VSS input present, no code 67 present, etc, etc)....BTW, the LSA in the X-303 is 112...... 107 is the intake center line and exhaust CL is 117....LSA = (107 + 117)/2 = 112.

If you want to dyno tune it, you need to make sure no failure codes are present anyway, or you'll end up with a GIGO tune.....based on faulty/defective inputs to the EEC-IV......my 2ยข.