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 10 Cycling valve? (Read 2251 times)
Ronin-951
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Re: Cycling valve?
Reply #15 - Jan 26th, 2015 at 10:34pm
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Thanks for the review IW, but one of my problems is 'lack of restraint', ... if it ever crosses with my hate of fords while on the Highway, it will conflict with my love of money and distaste for greasy fingernails. Grin Ya know, one of the things that attracted me to the 951 at first, was the ease of increasing the output, however, once it was running as designed, I don't see the need anymore. God help me if I find an Overdrive unit that will fit in the Torque Tube though. Roll Eyes
  

'Princess' of the Inland Empire, virgin '86, Lady in the City, Ho on the Hiway, Pace not Race!
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invisiblewave
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Re: Cycling valve?
Reply #16 - Jan 27th, 2015 at 4:31pm
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I have mine set so that it doesn't really make the car any faster, it just gets fast sooner!  It's particularly noticeable at highway speeds, you don't have to bother dropping it a gear to really gun it quickly.
  

1986 951 almost completely stock, boost enhancer mod.
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Ronin-951
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Re: Cycling valve?
Reply #17 - Jan 27th, 2015 at 8:08pm
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Man ... these are GREAT Cars! When they are running right, it just don't get no better! Cool
  

'Princess' of the Inland Empire, virgin '86, Lady in the City, Ho on the Hiway, Pace not Race!
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CW 951
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Re: Cycling valve?
Reply #18 - Sep 1st, 2019 at 2:00am
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Time to resurrect this thread as the same problem came back recently.

Here's the scenario: Car has been running wonderfully for the past 4.5 years since replacing the CV.  Now it's back to it's old tricks...boost is limited to around 1.2 bar (on the gauge) and the engine slightly surges under a load.  If I stop, shut off engine, and restart, 90% of the time it will be back to normal boost (1.8 bar) with no more surging.  Sometimes it will be fine for days on end after the restart.  Other times, after the restart, it will boost normally for a couple blasts then fail back to 1.2 bar until I shut off/restart.

After the last fail, while engine was still running, I disconnected and reconnected the CV connector to see if "power cycling" just the CV would fix it...nope, 1.2 bar and slight surging.

My questions: Does this sound like another bad cycling valve?  Or is it more indicative of something else (DME maybe?)?  Is there any specific troubleshooting I can do to narrow down the culprit?

Thanks in advance for the suggestions.  Wink
  
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