 Symtech FCD Calibration Help, FML!!! |
 Jun 5, 2012 - 10:02 AM
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Enthusiast  Joined May 16, '10 From Raleigh Currently Offline Reputation: 12 (100%)  |
Hey guys I just recently installed my symtech FCD, and thought that I was calibrating it properly, but after a few test drives this clearly wasn't the case. I had a situation where I leaned out under boost (I let off the gas immediately), and after some more adjustment all it would do is hit fuel cut. The adjustment screw on this thing will just spin and spin and spin in either direction (I was under the impression that it would stop at full left and full right rotation at some point). The green light on the device comes on in the same spot of the rotation every time, and then shuts off at the same rotation every time.
I ran a line from my compressor to the vacuum hose on my map sensor, and held it with 20 psi, but this thing is so finiky that I can't get the adjustment voltage right. AFter reading what other members have posted, I'm under the impression that I need to set the voltage between 4.10-4.17v. Do i actually need to blast the map sensor with 20 psi to do this? Or can I just turn the calibration knob and use a multimeter until is reads 4.10-4.17v? Any help or tips would be appreciated. This thing is driving me insane. --------------------  |
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Replies
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Aug 19, 2012 - 2:50 PM
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Enthusiast Joined May 30, '05 From MN Currently Offline Reputation: 8 (100%) |
Was getting frustrated with mine. I finally tried Batman's method and that worked for me. With bike pump at 17psi on boost gauge, l got 4.01volts on the multimeter and 4.17v at 18psi. I then dialed the FCD to 4.01v and mine is working now. I think every car is different, because l tried the settings betweent the 4.10 to 4.17volts and kept getting fuel cut.
-------------------- 3sgteing.
..burns twice as bright, lasts half as long. "The weight of the world is love. Under the burden of solitude, under the burden of dissatisfaction." -Allen Ginsberg- |
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Aug 19, 2012 - 9:31 PM
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 Enthusiast Joined Mar 8, '04 From Newport, RI Currently Offline Reputation: 63 (99%) |
QUOTE (malecrod @ Aug 19, 2012 - 3:50 PM)  Was getting frustrated with mine. I finally tried Batman's method and that worked for me. With bike pump at 17psi on boost gauge, l got 4.01volts on the multimeter and 4.17v at 18psi. I then dialed the FCD to 4.01v and mine is working now. I think every car is different, because l tried the settings betweent the 4.10 to 4.17volts and kept getting fuel cut. Great to hear. How's the car running ? How do you like the clutch ? It's different because of elevation, atmospheric pressure, things like that. Summer is different than winter, you might need to adjust again next season. -------------------- |
Posts in this topic
bsamps4 Symtech FCD Calibration Help Jun 5, 2012 - 10:02 AM
celica74 Wont be helping ben get it working unless people p... Jun 5, 2012 - 10:31 AM Batman722 IIRC I had mine at 3.8ish.
You need the 20psi in ... Aug 15, 2012 - 10:43 AM bsamps4 Where did you put the nozzle for the bicycle pump? Aug 16, 2012 - 6:23 AM
Batman722 QUOTE (bsamps4 @ Aug 16, 2012 - 7:23... Aug 16, 2012 - 8:01 AM bsamps4 I'm having a weird problem. The car will boost... Aug 16, 2012 - 6:31 AM bsamps4 Did you have a basket ball needle or anything like... Aug 16, 2012 - 8:34 AM Batman722 I used something like this
I got it at Walmart.... Aug 16, 2012 - 9:16 AM delusionz http://gtfour.supras.org.nz/mapsensor.htm
QUOTE
... Aug 16, 2012 - 11:14 AM delusionz I've heard st205 ecu fuel dumps at 16psi (but ... Aug 16, 2012 - 11:20 AM malecrod QUOTE (Batman722 @ Aug 19, 2012 - 9... Aug 20, 2012 - 9:48 PM celica74 do you think humidity would play a big factor? Aug 20, 2012 - 11:48 AM delusionz whats a safe psi you can run with the fcd, do you ... Aug 21, 2012 - 1:53 AM malecrod QUOTE (delusionz @ Aug 21, 2012 - 2... Aug 21, 2012 - 7:59 PM bsamps4 I run 20psi injected from 5psi to 21 psi. My aem i... Aug 21, 2012 - 8:02 PM celica74 QUOTE (bsamps4 @ Aug 21, 2012 - 8:02... Aug 22, 2012 - 11:33 AM |
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