Re: Viggen - Boost falling back to mid-yellow - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Viggen - Boost falling back to mid-yellow
Posted by Rick C. [Email] (more from Rick C.) on Thu, 13 May 2021 15:03:09
In Reply to: Re: Viggen - Boost falling back to mid-yellow, AlaskanViggen, Fri, 7 May 2021 14:39:48
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Hi Alaskan,
Thanks for the reply. I've had it for 3 yrs (and ~22k miles now), performance has been variable at times, but lately seems more sluggish (especially considering it has a stage 1 tune). Tune, new DI cassette and plugs done about 3 yrs ago also. At best it gets to end of yellow, more readily at lower revs, though would have expected with the tune to get a little into red? Vacuum lines have been well tied, no issues in a while.
MAF was cleaned last year, with <5k miles put on since - worth swapping? How does one know if it's gone bad?
Tried playing with the BPC hoses, not seeing a difference in boost so thinking that part is working well. Was thinking maybe wastegate actuator? Or perhaps bypass valve?
Thanks for your inputs. Will look into an upgraded intercooler!
Best,
Rick
posted by 24.63.8...
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