Since there seem to be a lot of questions on how N75 vs MBC vs Both affect boost, I drew this up...
03-19-2004, 09:57 AM
#32
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"Why would one not do it?"
1.)Most people are lazy and don't want one more
thing to pay attention to (Me, but I decided
it was worth it anyways)
2.)ECU controlled boost is exactly what some
people want. If you like the requested boost
of your ECU, no need to go with either MBC
setup.
thing to pay attention to (Me, but I decided
it was worth it anyways)
2.)ECU controlled boost is exactly what some
people want. If you like the requested boost
of your ECU, no need to go with either MBC
setup.
03-19-2004, 09:57 AM
#33
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so i just hook it up the same way i would run any MBC?
i keep seeing "parallel" i dont know if its because i was never looking but i have never seen anyone say that when talking about running an MBC.
)
03-19-2004, 10:01 AM
#36
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Read Mark's post. It depends on what you are trying to accomplish.
If you want to eliminate boost spikes and control initial boost/spoolup then you need to install it in parallel as shown in the diagram below.
If you install the MBC by itself and remove the N75, then you will be running a constant boost level. Keep in mind that the stock fueling system can't handle over 1 bar of boost at the high rpms w/o leaning out.
<img src="http://ctny.audiworld.com/mark/s4/misc_data/mbc_parallel.jpg">
-Dave Pramanik
If you install the MBC by itself and remove the N75, then you will be running a constant boost level. Keep in mind that the stock fueling system can't handle over 1 bar of boost at the high rpms w/o leaning out.
<img src="http://ctny.audiworld.com/mark/s4/misc_data/mbc_parallel.jpg">
-Dave Pramanik
03-19-2004, 10:03 AM
#38
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deflower! but im not a noob 8-P , i just never looked into
MBC's because i thought it couldnt be done. my guess for paralell is that i would need to run a line to each wastegate solenoid?( im guessing there are 2) where normal single turbo cars have one.