Ok I searched, but I could not find any answers so I have to ask.

Recently I just replaced my stock UICP with a custom UICP everything is almost the same except there is no bung for the meth kit yet and it is shorter with less bends. The meth kit is not fully hooked up, but is tapped on the MAF just no booster line or power atm.

Could this be the reason why the check engine light is on with a MAF error code? I'll have the code tomorrow if needed, the car is at the shop atm. I just do not see how this could happen because I didnt get this code with the stock pipe in the same situation.

BTW we reset it and it went away for an hour, but it came back.
Help a noobie out please!