Hey guys
Im on a bit of a quest at the moment..
I dont know if im barking up a tree some of you know about already.. but its a bit of a revelation to me..
maf diameter seems to be directly related to boost spikes/load..
Ive done so many logs, and I have proved that a slghtly larger maf will cause the car to overshoot its commanded load tables.. which can lead to a load cut (where im at now on the stock tune)
I need someone that no longer wants/needs their MPS3 stock air box (ill pay for shipping).. I plan on hacking out the stock maf housing (unable to put back together after my experiment) and adapting a high flow pod filter on it to proove thats its not the restriction removal from an upgraded filter, that gives the kick in the pant that some feel. But more so incorrect load targeting, due to the car seeing less air with the bigger maf, and compensating for its calculated X load by closing the wastegate a little more.. this then causes a boost spike.. and can put the absolute loads above the ECU limits. Even if the car doesnt cut, it will start to close the bloody throttle plate due to it getting confused..
my theory.. the hacked up stock maf housing will perform exactly the same as the stock air box.. and wont spike like an SRI can.. (even my SRI with an almost 0.0 LTFT will spike. because the cars load tables is calculated with a -3.9% LTFT!
Anyway sorry if im rambling..
If anyone doesnt want their stock airbox, or has a spare laying around.. Throw it to Doc, and ill disect it and experiment on it!
Cheers guys
Doc