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anyone know how to tune greddy profec b boost controller?

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Old Jun 15, 2005 | 01:05 PM
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From: Charleston, WV
anyone know how to tune greddy profec b boost controller?

i have been working on mine for quite awhile, but still not getting it where i want it. i have to amit i don't know what i am doing and the directions didn't help that much.
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Old Jun 15, 2005 | 01:16 PM
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Hey check out this link
http://www.zerostagemonster.com/EVO/Guides/
Its the last one on the list. Hope this helps
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Old Jun 16, 2005 | 04:58 AM
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hey thanks alot, hopefully i can tune it alittle better now.
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Old Jun 20, 2005 | 02:29 AM
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hey man let me know what u want and what u r doing and i will try to help u over here i tunned 1 a long time ago but i still think i can remmeber i have Apexi my self but they r all the same so let me know if u still needed some help :-) have a good day
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Old Jun 26, 2005 | 03:53 AM
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i just want to have a stock boost setting then a 22-24psi setting. i am just not sure what the hell i am doing, as far as gain, set gain, ect...
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Old Jun 26, 2005 | 01:45 PM
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Originally Posted by cpdevo31
i just want to have a stock boost setting then a 22-24psi setting. i am just not sure what the hell i am doing, as far as gain, set gain, ect...
your biggest concern needs to be your air/fuel ratio. timing is secondary. everything else is tertiary.

make sure your air/fuel ratios are reasonable as you increase your boost. you do have a wideband right?

strike

Last edited by strikethree; Jun 26, 2005 at 01:47 PM.
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Old Jun 28, 2005 | 09:16 PM
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From: Charleston, WV
no wide band but i do have an SAFC-II

bad news with the car though, either the whole tranny, the TC, or one of the diffs are going out. getting a real bad whine in all gears under accel and decel, and even in nuetral all the way to stop. man this sucks!
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Old Jun 29, 2005 | 12:43 PM
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Originally Posted by cpdevo31
no wide band but i do have an SAFC-II

bad news with the car though, either the whole tranny, the TC, or one of the diffs are going out. getting a real bad whine in all gears under accel and decel, and even in nuetral all the way to stop. man this sucks!
even in neutral? ouch. i am not a drivetrain guy. i hope someone can give you some pointers.

strike
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Old Jul 15, 2005 | 05:22 AM
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From: PA/NC
hey about setting up the boost controller, my last car had a greddy profec b spec2

setting it pu can be confusing at first but if u read the manual it will tell u pretty clearly what each setting does, and theres a chart if i remember for troubleshooting.

It'll say if u r spiking do this blah blah blah and so on.

anyway simplest way to start setting it up is mess with the gain.

your want the gain as high as possible(in most cases) right below the amout that makes u spike. This makes for fastest boost up, but wont spike(this is a good reaosn to setup your limiter first).

now oyur max psi is done bye %, but if you dont like math a simple pos calculator will help you. Simply put(if i remember) 0% is gunna be your stock boost setting. So if u want to add 5psi, find out what % 5 is of your maxe psi. that is
5 divided by stock boost(17?) i could help your more but i dont get my Evo MR until Monday so i dont even knwo what boost it runs.


a good thing to kepe in mind though(if u have the functions i had) is setup a 2nd setting on your controller. u get a A setting a B setting and an off setting, off = stock, and the two others u determine. Depending on where you live will depend on your settings but what you want to keep in mind is either how much the temperature changes from day to night, day to day or from season to season. For example i used to live in pennsylvania, during the day in sping it would be upper 80's, yet at nighttime it could drop to low 60's easy, this will affect your controller VERY much. So set it up for two different conditions.

I chose to make a setting for daily driving(low boost) and a setting for raceing people. 1 push of a button while at a stop light and u r ready to race someone


hope this helps
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Old Jul 15, 2005 | 05:26 AM
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You just blew your transfer case. Hence the whine. Seems like you have been doing some really ugly launches and beatin the hell out of your car. Mitsu probably wont warranty it and will charge u a lot for a new one. I recommend you get it out of your car and ship it to Jon at TRE (www.teamrip.com). he will fix it for you for about $1000. Good luck
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