Vortec27 Posted June 21, 2013 Posted June 21, 2013 (edited) Hi all im getting metal whistle kind of sound from bypass valve ? I see there's a jam nut with a Allen key adjustment in the middle what I need to know is how many threads need to be showing ? Thankw vortec27 Edited June 21, 2013 by Vortec27 Quote
The Chubby Ninja Posted June 21, 2013 Posted June 21, 2013 According to the instructions on mine it says not to adjust it. What kind of sound is it making? Quote
The Chubby Ninja Posted June 21, 2013 Posted June 21, 2013 Il check mine tonight and get back to you Quote
Vortec27 Posted June 21, 2013 Author Posted June 21, 2013 (edited) Hi chub What yours set at is how much threads showing after nut ? Edited June 21, 2013 by Vortec27 Quote
The Chubby Ninja Posted June 21, 2013 Posted June 21, 2013 Hi chub What yours set at is how much threads showing after nut ? il have a look tonight when im out at the garage. its never been used yet so should be the correct setting so il report back later Quote
Vortec27 Posted June 21, 2013 Author Posted June 21, 2013 Hi chub What yours set at is how much threads showing after nut ? il have a look tonight when im out at the garage. its never been used yet so should be the correct setting so il report back later Nice1 mate Quote
The Chubby Ninja Posted June 21, 2013 Posted June 21, 2013 mine has 9 threads showing. out of interest how much does yours have? also I seen a vid on youtube of how to clean out the bypass valve so maybe that's worth a try Quote
Vortec27 Posted June 23, 2013 Author Posted June 23, 2013 That look like 9 threads chubs from top bottom? Quote
Neilp Posted June 23, 2013 Posted June 23, 2013 Will this not be adjusted by the tuner to allow the correct air to by pass to stop any lean mix situations? Quote
The Chubby Ninja Posted June 23, 2013 Posted June 23, 2013 that's hwat I was thinking too so that the maximum boost can be adjusted? have you had it mapped? Quote
Vortec27 Posted June 23, 2013 Author Posted June 23, 2013 (edited) Yea it's been mapped. I've only adjusted it because of the whistle noise was getting on my nerves wish I never touched it now Edited June 23, 2013 by Vortec27 Quote
Neilp Posted June 23, 2013 Posted June 23, 2013 Yea it's been mapped. I've only adjusted it because of the whistle noise was getting on my nerves wish I never touched it now are you running afr gauges? Quote
The Chubby Ninja Posted June 23, 2013 Posted June 23, 2013 personally I wouldn't touch it once its been set. +1 on the AFR gauges? is it running lean? are you getting any compressor surge? Quote
Neilp Posted June 23, 2013 Posted June 23, 2013 personally I wouldn't touch it once its been set. +1 on the AFR gauges? is it running lean? are you getting any compressor surge? I think he may have just buggered his tuning and possibly his engine if he drives it Quote
The Chubby Ninja Posted June 23, 2013 Posted June 23, 2013 I know .he stays in London so id suggest getting it to Abbey ASAP! 1 Quote
Vortec27 Posted June 23, 2013 Author Posted June 23, 2013 No afr gauge fitted yet. What's compressor surge? Quote
evilscorp Posted June 23, 2013 Posted June 23, 2013 RS never touched mine as it is set from the factory, I haven't touched it either, that whistle noise is surly normal. What is your idle rpm set at? If it was really bothering you maybe enquire about getting the filter GT4ZED (Bennet) has. Quote
evilscorp Posted June 23, 2013 Posted June 23, 2013 When you get off the throttle quick and all the air has nowhere to go as you have closed they bypass valve too much and it then trys to go back through the supercharger the wrong way. Quote
Vortec27 Posted June 23, 2013 Author Posted June 23, 2013 (edited) Idle set at 900 rpm.The noise was not the normal bypass swoosh jet noise it was like a metal whistle just as I hit the gas Edited June 23, 2013 by Vortec27 Quote
Vortec27 Posted June 23, 2013 Author Posted June 23, 2013 All I done is open valve a bit more Not close it . When it was mapped the valve was closed a bit more then I have it now . Might go adjust it back to how it was Quote
evilscorp Posted June 23, 2013 Posted June 23, 2013 When you hit the gas full throttle the valve should fully close, so the whistle sounds like it was leaking maybe? Or not sealing properly, I thought you were talking about when stationary. Quote
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