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Originally Posted by MR2SW22
I've been told it's worth it to get the HKS FCD i use to have on my first 91T, i can set the RPM limit, and it disables the stock boost cut. if this is true please let me know sang, and if you have a nice alternative im all ears.
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The HKS FCD only works on one setting for the mr2. You either, eliminate it completely, or set it at #9 and it sets FC at 17.8 psi (or whatever the max the MAP sensor will allow).
The ONLY FCD worth getting for the gen2, IMHO, is $60 cheaper than the HKS and has infinite adjust ability within the range of the stock MAP sensor. So anywhere between 12.1psi to 17.8psi.
In face, i'll be ordering a Twos R Us FCD in the next couple of weeks.
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do you think the JDM ecu will have a higher boost cut?
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No, infact a jdm ecu should also have speed cut as well.
Quote:
Originally Posted by MR2SW22
what do you mean pull the reference line off the map, is that the Vac line we are talking about? or is it an electrical line?
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Pulling the vacuum line, plugging it. Then leaving the MAP sensor end open, lets the ECU read atmospheric pressure, 100% of the time.
Pulling the electrical connector, disables the MAP sensor and causes the ECU to enter limp mode.
If you're friend removed the vacuum line, and his car ran like crap, his issues lie elsewhere. A gen2 should not "run like crap" with the vacuum line pulled.
I, as well as countless others, have ran this way for years.