Boost (or lack there of) in 86 5kcstq; window relay

[Brian Devlin]

Same here, 86 5ktq. I only see 1.3 on warm days at low altitude.
Hopefully that will change soon.
-Brian


>Luke,
>Do you happen to reside in a high altitude area?  My observations in trying
>to get boost above 1.2 bar in my 87 5kcst is that the wastegate control
>algorithm in our models limits waste gate frequency valve duty cycle to 50%.
>50% duty cycle at 5000 ft. altitude, with stock WG spring, results in max
>boost of 1.2, or slightly higher, bar.  I have had a few on this list
>disagree with me but everyone that has disagreed had a modified computer,
>after market WG spring,  or a later model ECU.  Until I am shown an
>unmodified 86 or 87 5kt that produces more than 1.3 bar at 5,000 feet I will
>continue with my present opinion.  I have been through my 5kcst, with SJM,s
>guide in hand, for too many hours to believe I still have a fault that
>produces low boost.  I came to my conclusion after measuring WGFV duty cycle
>for many months.
>
>Larry in Loveland, CO
>
>>Hi all,
>>Just installed new inlet temp sensor, to correct the dash light coming on
>every time I stepped on the
>>gas, which it did.  But, I still cant get the boost above 1.2.