MKIV Sidemount=Fuel Cut?

[Me4g63U]

I recently installed the Supra Sidemount. I am now seeing boost spikes to 20 psi and fuel cut. Once the spike settles to 15 psi, the car runs fine and maintains boost so I don't believe there are any leaks. I am not able to reduce the spikes with my MBC. This never happened before the intercooler install. Any suggestions? I have a 255 lph pump that needs to be installed. Will this correct the problem or should I trash the MBC?

 

[ChicagoGSX]

When you adjust the boost controller, does the amount of boost change at all? You may have the MBC adjusted to high, and the T25 goes up to 20 PSI, and then drops down because it can't maintain boost.

 

[Me4g63U]

The amount of boost maintained changes, but the spikes are still present. I have it adjusted at this point so that the spikes are to 18 psi and holding at 15 psi. The fuel cut is only for an instance or two but still enough to affect performance. I was able to spike to 18 before the IC install without fuel cut.

 

[Tallen]

toss the MBC and install the puel pump