I have an apex I at meter but into my TT, it's always sat at 14.5/6 when warm on tick over, yesterday I fitted a cold air feed pipe from a duct in the front bumper to inside the air box, fitted a nice new k&n panel filter, took it out last night and the af was all over the shop for about 10 mins of diving, reason for fitting is previous owner had the car so low on 19's he removed arch liners and had arches rolled, and had removed the resonator box so the filter box had been sucking in all the dirty air from inside wheel arch,

From what I have read it will be tater for the car now as it has nothing but nice cold clean air to breath, but why was my af meter going bonkers

Thanks in advance Mark

 

Probably the ecu going through a learning phase until it understood what it needed to do for the new set up.

 

That's what I thought, cheers bud, just need to get rid of my blitz dv for a factory revirc and I'll be a happy bunny