It is not uncommon for this to occur. Try resetting the ecu if that doesn't work don't worry about it. Its just one of the quirks of changing a car from mass air to speed density.
The VPC came from Supra Sport in the USA (it was originally bought for a MK3), the ROM chip came from MVP.Sound Performance said:Where did you get the VPC?
It is fitted correctly, we have even measured the resistance with a multimeter and it is 1200Ohm.stoker6 said:I had this same problem. I didn't have the resistor correctly installed across the pins on the MAF connector. Make sure the resistor is connected into the contacts properly.
Looking at the pins of the MAF connector with the rectangle notch facing up, the resistor goes into the second and third contacts from the right.
You mean only hooking up or putting it in the air flow as well? This is kinda undoable as the single turbo kit has no space allocated for the MAF.stoker6 said:Hook up the MAF sensor to the connector and see if it goes away. Did you try that?
Not a bad idea, works for the RX7 TII, unfortunately the Supra's MAF measures what is called a "swirl frequency" rather a WOT (wide open throttle) condition. I guess you could try it? But first try this....Flavio said:If we can't solve this VPC problem I am thinking of getting rid of the VPC and GCC and using the stock MAF in a blow through setup. Will this have any drawbacks in my situation (SP57 with fuel, hoping for 580rwhp)?
The Supra TT's MAF is a hot-wire type, which measures the mass of air by ajusting the voltage needed to keep a Pt wire a certain temp. Your probably thinking of a Karman-vortex MAF which is used by the NA Supra and other cars.choritsu-shi said:Not a bad idea, works for the RX7 TII, unfortunately the Supra's MAF measures what is called a "swirl frequency" rather a WOT (wide open throttle) condition. I guess you could try it? But first try this....