Ok I have a D15b motor AUTO BLAH BLAH, P08 ECU, Spoon VTEC controller. Now I got this mugen chip and I wanna know if it will affect the VTEC timing in anyway if I have the VTEC controller? I hope I explained it enough

 

I think you may be better off w/o the chip if you already have a vtec controller. But I think the mugen chip and spoon controller will not work together, that well. You MIGHT get the the fuel/air mappings from the chip and still have the vtec controlled by the spoon. If I remember the mugen chip makes vtec come in at like 4400 or 4600.

Also do you have the JDM D15 Vtec? Just curious.

 

Yes D15B Jdm motor and the p08 ecu that it should have.