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reducing boost to near zero?

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Old Jan 3, 2004 | 12:53 AM
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From: Deepest Darkest Dorset!!
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Right,
Car got whacked by another vehicle today, and will therefore be making a trip to a bodyshop, what I was wondering is, is there something I can disconnect, or do to make it give either very low or even no boost, I know what some people are like, visited a bodyshop recently where a mate works, he started up a customers scoob, and practically bounced it off the limiter stone cold!!!!

Help!!
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Old Jan 3, 2004 | 08:12 AM
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Just take of one of your boost pipes once you arrive like the pipe going to dump valve.
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Old Jan 3, 2004 | 08:25 AM
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ron
it could worse i put my car into a friends bodyshop for some work and when i went to pick the car up a week later they had used my £20 worth of fuel that ws in the car and told me my car does 155mph so make sure the car is nearly on empty when you pop into the garage with it
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Old Jan 3, 2004 | 08:35 AM
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From: Swindon
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Connect the outlet tapping of the turbo directly to the actuator with a single pipe, if you pull off the wrong pipe elsewhere you could end up with two bar boost !!!

bob
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Old Jan 3, 2004 | 09:57 AM
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Cool - which one is that Bob?

<Brun - thinks about 300bhp and a big bang >
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Old Jan 3, 2004 | 10:38 AM
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From: Zed Ess Won Hay Tee
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disconect the wastegate

my mate put his tuned up pulsar into a bodyshop and they put it into a wall @ 60mph

when my car went into the bodyshop it had 1 extra mile on it, but i couldnt see any fuel use, but the bodyshop owner said "its fast" probs took it out from cold and hammerd it dwn the road, *******
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Old Jan 3, 2004 | 12:02 PM
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From: Deepest Darkest Dorset!!
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Bob,
so if I read you right, (which I'm probably not!!) you mean remove the dawes that I have and run a straight pipe from the turbo to the actuator??
I may be daft, but won't that give more boost, or maybe it won't give any due to no bleed??

Yep, you got it, i'm confused!!

Thanks for the help!!

Ron.
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Old Jan 3, 2004 | 12:35 PM
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From: Zed Ess Won Hay Tee
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disconect the wastegate from the actuator

you wont get any boost at all (i didnt)
you will probably have to remove the turbo heatshield tho (i havnet refitted mine as im going to swap turbos as soon as funds allow)
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Old Jan 3, 2004 | 12:38 PM
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Exclamation

if you take a pipe directly from the small outlet on the compresor and feed this to the waste gate actuator you will be feeding boost straight to the actuator. So as soon as it starts to generate enough boost to overcome the inbuilt tension of the actuator it will open the waste gate.

The standard boost control works by bleeding off the boost presure from the actuator, thats why to increase boost you increase the waste gate solonid duty cycle, allowing more boosted air presure to bleed away from the actuator until you hit the desired boost level.

Hopefully that makes sense.
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Old Jan 3, 2004 | 12:42 PM
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Unhappy

i havnet refitted mine as im going to swap turbos as soon as funds allow


The turbo sits directly under the MC for the clutch, people have reported problems with boiling clutch fluid if the vehicle is used with the heat shield removed. Most notably IanW (one of the mods)

Besides think about the poor IC with all that heat staring straight at it
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Old Jan 3, 2004 | 12:55 PM
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From: Zed Ess Won Hay Tee
Thumbs up

yes and its winter over here and freezing cold

its not like im doing track days
theres no knock retardation going on so im doubtfull theres any knocking
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Old Jan 3, 2004 | 04:22 PM
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From: Deepest Darkest Dorset!!
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JF,
thats makes more sense for an idiot like me, many thanks!
The guy from the bodyshop visited earlier, and said they would probably drive it back to their premises, so I said I'll probably deliver it!

Many thanks, just need to find a bit of hose!!

Ron.
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Old Jan 4, 2004 | 03:35 PM
  #13  
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From: Deepest Darkest Dorset!!
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Done, and it only gives about 0.4bar boost!!!
Cheers guys!
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Old Jan 4, 2004 | 09:18 PM
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Talking

Result.
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Old Jan 4, 2004 | 11:37 PM
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just put a post-it note over the speedo with the mileage written on and then write "Big Brother is Watching" Shouldn't have any bother then!

laters

Stu
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Old Jan 4, 2004 | 11:47 PM
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From: 7.74 @179 mph 1/4 mile - road legal
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Or "Warning - the tracker system fitted to this car will result in a report to the police in the event of any unauthorised movement"

Personally, I'd also unplug the MAF meter then it will only run at just over idle speed, just enough to move it around the workshop and no more !

Andy
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Old Jan 5, 2004 | 01:19 AM
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I'd unplug the MAF too. Runs as rough as a pig, and has a nice check engine light.
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Old Jan 5, 2004 | 09:11 PM
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Excellent, just what I was wondering coz limiting the boost doesn't stop the ******* from revving it to the redline (probably while still cold) trying to make some.
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Old Jan 8, 2004 | 04:31 PM
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Me, I just remap mine

Richard
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Old Jan 8, 2004 | 05:22 PM
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Wink

There's always someone going one better, isn't there?
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