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Old 05-17-2004, 07:05 PM   #1
Wedge
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Lightbulb Custom Boost Switch

So I'm using a LINK+ and the $30something dollar AC Delco boost controller, and my buddy came up with this idea :

OFF = Runs off stock wastegate (6.6 PSI)


ON = Turns on the boost controller (18 PSI)


Note that you can alternate even when on the throttle. God I love this switch!
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Old 05-17-2004, 07:19 PM   #2
White 2.5rs
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i have an fp20g do u know if the wastegate is set the same
also, say it did open, and i kept mashing on it, wouldnt the link keep adding HELLA fuel cause itd think that it was going for a 20+psi map <my personal map>

thanks
alex
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Old 05-17-2004, 08:28 PM   #3
Wedge
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Wastegate setup is irrelevant, it all matters on the boost controller and the LINK.

What the LINK does is it reads a totally different MAP line. So at 6PSI its reading one line, and at 18PSI it reads the other.

This is WITHOUT reloading a MAP to the Link.
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Old 05-17-2004, 09:05 PM   #4
White 2.5rs
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ewww sexy!?!
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Old 05-17-2004, 09:26 PM   #5
sideways slut
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i still dont understand, if you dont want 18psi then why not just give it less throtle?
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Old 05-17-2004, 09:48 PM   #6
ForesterPerformance
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Let me see if I can explain this to you people who are having trouble understanding.... (I am the "buddy" who came up with this awesome idea )

Okay... Wedge is using the LINK PLUS for fuel management. LINK PLUS is controlling the DELCO boost controller. LINK PLUS has a 3D map based on RPM / BOOST / and IIRC IGNITION TIMING. Therefore it will ADD FUEL (in this case) and PULL TIMING (also in this case) based on what it sees both for RPM and BOOST. Now remember, also, the LINK is controlling the solenoid to the TIAL WASTEGATE to make it go up to whatever you program it for. (18.5psi in this case) The internal Wastegate Spring is 6.5psi.

Okay. So if you put a switch inline to the 12V+ going from IGN power to the solenoid, you are effectively removing the boost controller alltogether (leaving the solenoid always open) and the wastegate opens at whatever the spring is set for (6.5psi in this case). With the switch ON, the solenoid works under the LINK PLUS control, and fools the wastegate into opening later on. (18.5psi in this case)

Now. The LINK PLUS is watching boost and has separate areas on its 3D map based on boost values. So, no... it will not add 18.5psi worth of fuel if the car is only boosting 6.5 psi. It sees that it is only getting a max 6.5psi boost and adjusts fuel and timing accordingly. Any time you want to you can switch back and forth between the two. The LINK PLUS automatically compensates based on the MAP (boost) value it gets from the manifold pressure.

Quote:
Originally posted by sideways slut
i still dont understand, if you dont want 18psi then why not just give it less throtle?
Because you may not want to drive it like a little old lady at part throttle all the time, but don't really need to get 9-11mpg for the drive to work. The car is still very quick at 6.5psi and still alot of fun to drive. At 6.5psi, this is "daily driver" mode. Flick the switch and it is "KILL" mode. In a way, I suppose, it is like having NOS that you never ever have to re-fill!!!

Also, it makes a great "VALET" mode or "MY BROTHER IS TAKING MY CAR TO THE STORE" mode to keep people from getting in over their heads in your car. 277WHP and 289ft/lbs is alot in a 2800 lb car, even if it is AWD! Most people don't have the driving skill to handle it. Better not to give them the chance to find out, no?
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Old 05-17-2004, 09:58 PM   #7
sideways slut
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i guess for the sake of having other drive your car i can see the point, then just maybe id let my girlfriend drive my car
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Old 05-17-2004, 10:12 PM   #8
Drac9
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Wedge, I'd love to see a copy of that map if you have it. I am still playing with mine trying to get it running well.

akennedy@cnrhelp.com

Thanks man

Last edited by Drac9; 05-18-2004 at 10:39 AM.
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Old 05-17-2004, 10:14 PM   #9
sideways slut
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Quote:
Originally posted by Drac9
Wedge, I'd love to see a copy of that map if you have it. I am still playing with mine trying to get it running well.

me too
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Old 05-18-2004, 12:48 AM   #10
White 2.5rs
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does anyone know what the WG is set at on the new FP20gs?
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Old 05-18-2004, 08:44 PM   #11
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hmmm... Do you have a part number for the boost controller? Me likey this idea!
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Old 05-18-2004, 09:54 PM   #12
Wedge
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Old 05-18-2004, 10:07 PM   #13
seven881
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Cool! Where's you get the switch?
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Old 05-18-2004, 10:13 PM   #14
Wedge
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Any autoparts store.
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Old 05-18-2004, 11:08 PM   #15
sideways slut
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an electronics parts store will have a large selection of switches, i just found myself a nice black one for my water spray
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Old 05-19-2004, 09:39 AM   #16
doublej
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i really like the idea . its kinda of like a 2 stage boost controller.i may do this on the sti once i get gt30 kit.
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Old 05-19-2004, 09:55 AM   #17
White 2.5rs
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cept its better than most dual stages because the engine isnt running rich
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Old 05-19-2004, 10:57 AM   #18
Wedge
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Sideways, give me your email so I can send you the MAP.

(I'm gonna be putting up my MAPs on my site soon)
http://users.adelphia.net/~wedge138/
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Old 05-19-2004, 11:37 AM   #19
sideways slut
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sure thanx, rallylife@msn.com
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Old 05-19-2004, 01:12 PM   #20
Wedge
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Grab it form my site, under LINKS.
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Old 05-19-2004, 02:32 PM   #21
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Hey Wedge.... what are the details on the setup for the STI-hybrid tune? injector size, fuel pump, etc.

Thanks
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Old 05-19-2004, 02:51 PM   #22
Wedge
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Yeah, I haven't had time to add that to my site...but temporarily you can find all I have done to the car on this site :
http://www.wanganmidnight.com/forums...CODE=12&CID=72
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