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appies to T5 ECU's, any red DI, on some 9000's and NG900's 1994 --> 1999 9-3.
Your post might be understood by some.
Fuel cuts do not cause damage and no resets are required. Increase boost until you find fuel cuts, then reduce boost until these do not occur. Some fuel cuts are avoidable with new throttle techniques. You will learn new throttle techniques to avoid wheel spin. There are no safety problems with the BPC being bypassed with properly maintained engines and decent fuel. There are recommended other mods that should be done, don't run a MBC at the highest boost that you can on a stock vehicle, the intake and exhaust restrictions contribute to high temperatures etc. With the T5 and MBC mods with a stock ECU, and other intake and exhaust mods, there are no concerns with fuel delivery, pressures or injectors. The ECU is working within its fuel maps and has no problems doing what is needed. Fuel cuts occur at around 15.5 PSI. You should be seeing around 30 to 40% into the red. With a basic MBC install, you will see a lot of pressure drop at the RPMs go up at WOT. The MBC is controlling the pressure at the turbo compressor outlet. As the RPMs go up and the flow increases (CFMs), the pressure drops from the IC and plumbing reduce the pressure at the manifold. A Viggen IC, turbo discharge silencer removal, and TBTC rework will help a lot. Locating the MBC pressure tap elsewhere can help too, but then there are other issues. Keep reading and learning. You vehicle will tell you a lot. The MBC is not the best solution in the world, but whats that grin on your face!
Your engine will work harder at its peaks, but it is definately strong enough for much more. Do use Mobil 10W30, 0W40 or 15-40. Purolator PureOne filters are better and not so expensive. Use good fuel, keep your injectors clean and use the right plugs. If you have lots of miles, I expect that you will find a xW40 will run smoother and quieter.
If you decide that the MBC is opening a whole new world of performance for you and you then decide to go with an ECU mod, then the MBC was an inexpensive stepping stone and leanring experience. A modified ECU really does also need the intake and exhaust modifications. So any work done there is a good foundation for the future.
posted by 66.139.120...
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