I find at 1.2 boost on my GReddy the turbo spools up great & smooth on the hi setting. But if I floor it on 1.0 bar on low setting then the car jiggles/bobbles as the revs reach 4000+. Why is this & is it normal? It feels like the jiggle the car makes when I take my foot off the gas after putting my foot down, but I think this is due to the dump valve...is it not?
Chris
ps....Jiggle & Bobble highly technical terms of course
Re: 'Jiggle' on lo GReddy boost?
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#496718 04/12/200720:4204/12/200720:42
When you come off the accelerator, that'll probably be the DV.
What settings do you have hi & lo on the Greddy currently?! It could be that you have the warning too low and it's quickly trying to reduce the spike in boost.
Mark
Re: 'Jiggle' on lo GReddy boost?
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#496724 04/12/200720:4704/12/200720:47
I'll check....think warning is set at 1.25 on both lo & hi? I thought it (warning level) just beeped at me & didnt change anything else...Im obviously wrong then....again!
Chris
Re: 'Jiggle' on lo GReddy boost?
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#496745 04/12/200721:1204/12/200721:12
If you hit the warning you can set the controller to reduced the boost by a set percentage (user defined)- this can be set to zero I think which would not reduce anything.
The greddy registers the peak boost as about 0.1 bar higher than your actual boost level as it picks up a tiny overboost spike when you come on boost - which is nothing to worry about.
Re: 'Jiggle' on lo GReddy boost?
[Re: ]
#496750 04/12/200721:1304/12/200721:13
I'd set the warning at 1.4bar, which Suba advised me to do a while back, then you can lower by 2% or 5% if it hits that. Give it a try and see what happens.