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PostPosted: Sun Feb 19, 2012 1:30 pm 
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Hi im new to the forum and have recently purchased a blitz spec s boost controller. for some reason its over boosting. does anyone have any idea as to why this is? pics would be very helpful thanks. it seems to do it when i gear down and push on the accelerator or when im cruising in any gear and put my foot down. i have the gain set down on 3 and 5 percent boost. Many thanks


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PostPosted: Sun Feb 19, 2012 6:43 pm 
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Joined: Wed Jul 13, 2005 12:06 am
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Location: Perth, Western Australia
Car Model: ST205
A bit more information would be helpful. When you say you are overboosting what boost figures are you seeing? I used to run a Blitz DSBC Spec R and found the instructions on this link very helpful http://www.rtec.ch/dsbc_manual.html
I can't recall exactly what gain and volume I ran but the 3 and 5 you mention do seem pretty low. If you have replaced the cat with a free flowing downpipe then this will make a big difference and it will make it easier to overboost, particularly if you give the throttle lots of welly!

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1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
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PostPosted: Sun Feb 19, 2012 7:37 pm 
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Hi,

you just have gain to adjust on the BC? or is there also a set?

3-5 is very low which means nearly no boost controll, makes me think of a air leak anywhere to the acutator of the turbo or possible wrong lines on the boost selenoid (there is a in and out port!)
do you closed the line to the oem boost selenoid aka VSV?

greetz

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PostPosted: Sun Feb 19, 2012 8:08 pm 
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Location: sunny sleaford- lincolnshire
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for reference the gain i ave set ( for overall boost response or whatever on the blitz manual it recommends 5.. for the gain for each individual setting i ran 56 on setting 3 and 60 on setting 4 and these acheive around 1.1 - 1.2 bar


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PostPosted: Sun Feb 19, 2012 9:34 pm 
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Location: Sunny Fareham, UK
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www.gtfours.co.uk > downloads

There is a guide on how to setup the Blitz DSBC there...

I too have seen/set a very low gain on to achieve a decent boost level and system response...

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PostPosted: Mon Feb 20, 2012 9:11 pm 
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thanks for all the replys and manuals. finally got it sorted. had an air leak on one of my vacuum hoses and hadnt blocked off the vsv. now its at a staedy boost. set at 5 and 20percent reaching 0.90 hkpa


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PostPosted: Mon Feb 20, 2012 9:59 pm 
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Location: Perth, Western Australia
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Result! ..... nice to hear you got it sorted :D

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Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp


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PostPosted: Mon Feb 20, 2012 11:03 pm 
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Joined: Tue Dec 09, 2008 6:51 pm
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Hi,

nice to hear too :)

greetz

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