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Old 02-17-2012, 12:13 PM   #8
pwpanas
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Quote:
Originally Posted by priyesh12 View Post
...Seeing how I'm only able to access 93 octane...
I think you'd be surprised. Most dyno shops, race tracks, and motorcycle shops have race fuel. Many areas have a distribution center not too far away for at least one race fuel supplier: VP Racing Fuels, Sunoco, etc. You can even run methanol injection with Isopropyl or Denatured Ethanol, both readily available from home improvement stores. Heck, worst case you could run your meth injection system with pure distilled water. Consider the alternatives, and don't limit yourself to 15psi - what a waste, considering your shortblock and head is built to handle about double that.

Quote:
Originally Posted by priyesh12 View Post
...I checked the online manual and there is nothing I can get from it maybe you would have better luck and perhaps this could be useful for someone else making the same mistake I have lol

http://gizzmousa.com/file-copies/MS_2_Manual.pdf
As much as I hate to admit it, it appears I may have been wrong about the FCD function in the MS-2. According to the manual, it may work just like the GReddy BCC...better in fact, since you can adjust the max voltage level interactively on a display, instead of calibrating it with a screwdriver. Just set the max voltage per the GReddy BCC install instructions, and it may work perfectly. Again, this assumes the documentation in that manual is accurate, and the only thing it does is limit max voltage. The critical difference between devices that do not limit cut properly and the ones that do (for the Mkiv Supra Turbo) is as follows: the ones that do not modify the voltage below the cut point (usually linearly). I'd recommend you test this - use a bicycle pump to change the pressure the TPS is seeing to just below the cut point, and be sure the MS-2 isn't modifying the voltage (compare the sensor output voltage against the MS-2 output voltage) - if they're the same, it works properly...but if they're not the same, the MS-2 is modifying the voltage below the cut point and you'll need to get a GReddy BCC.
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Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.

Last edited by pwpanas; 02-17-2012 at 12:39 PM.
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