2nd Generation Specific 1986-1992 Discussion

All S5 T2 Owners Read This!

Old 05-10-2004, 05:49 PM
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so we are tuning a stock ecu s5 t2 with an fcon. it has all the emissions removed.



we put it on the wideband and you can see it go lean over 5000rpms, ok so we keep turning up the fcon and that just makes it bog harder below 4k but it really didnt change over 5k rpms.



we were thinking fuel pump until paul suggested the fuel pressure solenoid.



check the codes, we get #25, pressure regulator control (fuel pressure solenoid), i plug solenoid into connector



BAM!



10.9:1 afr all the way up to redline, problem fixed



this could easily pop your motor.....
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Old 05-10-2004, 06:54 PM
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good info
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Old 05-10-2004, 06:56 PM
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oh yes, THIS DOES NOT TURN ON THE CHECK ENGINE LIGHT
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Old 05-10-2004, 11:01 PM
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you mean that thing that only effects fuel pressue for 30 secs durring a hot start?......



how is it gona blow my motor
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Old 05-10-2004, 11:31 PM
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I thought you said you removed emissions? Is this not in the rats nest?
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Old 05-10-2004, 11:32 PM
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Originally Posted by Scott 89t2' date='May 10 2004, 08:01 PM
you mean that thing that only effects fuel pressue for 30 secs durring a hot start?......



how is it gona blow my motor
yes if thats not plugged in the ecu doesnt turn on the secondary injectors
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Old 05-10-2004, 11:33 PM
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Originally Posted by 1Revvin7' date='May 10 2004, 08:31 PM
I thought you said you removed emissions? Is this not in the rats nest?
um i just plugged the solenoid in electrically, there are no vacuum lines hooked up to it
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Old 05-10-2004, 11:34 PM
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dude thats scary. We will find out when the LM-1 gets here on my buddies s5 t2...
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Old 05-10-2004, 11:35 PM
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Originally Posted by 1Revvin7' date='May 10 2004, 08:34 PM
dude thats scary. We will find out when the LM-1 gets here on my buddies s5 t2...
yeah double check it, i would love to be wrong. granted it did fix this car
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Old 05-11-2004, 12:32 AM
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well mines been gone for a while....
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