I just changed heads gt40 and 1.7 rockers ,cobra intake 70mm tb it ran like it had no power then I heard cobras r gapped at 54thousands I was at 40 I regapped and boom one ride had loads of power now missin
Do you still have stock inj ? if yes then you might need to put MAF calibrated for that injectors and 70MM TB. Also proper tune can take car of these mods.
Also, make sure that you dont have any vac leaks due to heads/intake replacement.
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