Thread: Help. swap wont rev under load

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have you checked the connections ro the maf, along with the ground and stuff like that. ot me sounds like a maf issue

I've checked all the grounds all I can thing of is a boost leak

x 2

I'm going to go through and check all the wiring for the maf. Could it have something to do with me having apexi neo wired up to the stock ecu

hmmmm I was gonna say the tps but you said you checked it. Do you notice if the car only does that when it is warmed up or is it always?

It does it when the engines warm and cold. I think my apexi is still tuned for my n/a setup and isn't letting the u12 run the engine properly

That could definitely be it

I haven't gotten around to anything today. Plan on going through and rebooting the apexi and testing the volts and resistance of all my wiring. My setup consist of a w10 engine a u12 ecu b13 maf and skinny o2 sensor.

Also remember you have to program the Apexi to run with U12 ECU using B13 maf