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golf gti 20v turbo, boost pressure?

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Old 29-12-2012 | 09:35 PM
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Default golf gti 20v turbo, boost pressure?

i know i'm asking in the wrong place but i know a lot of you guys know these cars well
but i've recently bought 1 of these on a 2000 w reg
car is realy tidy and nice to drive so i'm gonna keep it for a while
but i think it feels like it should be a bit quicker than it is
its only a 150bhp model so i'm not expecting to much
it just feels like it barely boosts, it does make some boost so no leaks or duff turbo etc
but i was wonderering what is the standard boost pressure meant to be on these?
and is it ok to turn it up a bit? if so how much is ok before it blows up?
i havent stuck a boost gauge on it yet to check, so it might be ok
i'm maybe just to used to my other cars(420bhp 2wd saph & 413bho evo 7)
i've never had a golf turbo before, i used to have a gttdi 130, but that had been mapped so pulled really well and i feel that even that diesel would have left this current 1 for dead
anyhow thanks for any help with this
thanks jamie
Old 29-12-2012 | 09:37 PM
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7 psi mate
Old 29-12-2012 | 10:08 PM
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I have the AUQ (11psi) 180 bhp engine in the skodi and that feels quick but not that fast and quite a flat power curve ,so if your going from 400+ to 150 its going to feel like a moped .
Old 29-12-2012 | 10:11 PM
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There a heavy car and slow in standard form, we've recently had our A3 1.8t remapped, flys now. It's how it should have been from the factory.
Old 29-12-2012 | 10:26 PM
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Originally Posted by slammedorion
There a heavy car and slow in standard form, we've recently had our A3 1.8t remapped, flys now. It's how it should have been from the factory.
Yer a mapping is on the cards but turbos done 100 thou so thinking a rebuilt first ,maybe go hybrid then mapping .
Old 29-12-2012 | 10:33 PM
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My 180 bhp leon was std at just under a bar of boost so 13ish psi, had a 210 map and it peaks to a bar and half s
o 21? Psi
Old 29-12-2012 | 11:14 PM
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100k's nowt for these engines. Get it remapped and enjoy.
Get it serviced and running spot on first, there prone for all sorts of little issues, dv's, n75 valves, maf's, leaking vacuum pipes, boost leaks etc.
Old 29-12-2012 | 11:37 PM
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As slammedorion says get it all checked over first. Also do a N75 delete. I work at a vw specialist and do this all of the time.
Old 29-12-2012 | 11:41 PM
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the car drives perfect, got full vw history, just serviced less than 1000 miles ago etc
tbh honest i dont think theres anything wrong with it,
i'm just too used to having a bit more power/torque
i'm gonna stick a boost gauge on it to check but i didnt know how much it should be running
thanks for all the help and answers so far guys
Old 29-12-2012 | 11:45 PM
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Originally Posted by RONNIE AMIS
As slammedorion says get it all checked over first. Also do a N75 delete. I work at a vw specialist and do this all of the time.
How's a n75 delete work ?
My ibiza cupra has had the secondary air injection and the other n valve that sits on the rocker cover deleted. But I thought the n75 valve is the boost solenoid and you need it ?

Mines a ayp so I'd assume that's the same as the ops golf. On a ko3 as well.
Mine peaks at 21psi at about 3.5k and by 5 grand it's down to a bar ish. By the red line it's dropped to about 10psi.

Makes it feel like a derv. Was thinking about trying to ditch the n75 valve and going for an electric boost controller to try and stop the boost creeping of as much
Old 30-12-2012 | 12:03 AM
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where you work Ronnie?

i dunno why people bang on about N75/710 valve must be in place, fuck off....... throw them in the bin!

get it mapped, drivability, MPG and performance are excelent, have a go of one from a personal company, most will give you a 7day trial of their software
Old 30-12-2012 | 12:21 AM
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Ours all still plumbed up as factory, just air filter, miltek with Decat and remap.
Works spot on and never wants for nothing, which is why it stays reliable.
I have a personal stock of boost solenoids and standard dump valves.
Have thought about the n75 delete but while it works and I have new spares don't see the need.
Old 30-12-2012 | 12:42 AM
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why do you have a stock of boost solenoids/DVs if they work fine and are reliable?

dont make sense!

been doing this shit for years, mapping golfs/A3`s/4`s bin the fuckers and smile!
Old 30-12-2012 | 12:54 AM
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My aum golf (k03s turbo)boosted at 9psi before I had it remapped now its peaking at 20 and holding 18-19psi and feels a lot nicer to drive
Old 30-12-2012 | 10:47 AM
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What's the n 75?
Old 30-12-2012 | 10:51 AM
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Originally Posted by GARETH T
What's the n 75?
The VAG way to control boost

5 psi means its in limp more to save the engine
Old 30-12-2012 | 11:37 AM
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Originally Posted by Cossie Sean
why do you have a stock of boost solenoids/DVs if they work fine and are reliable?

dont make sense!

been doing this shit for years, mapping golfs/A3`s/4`s bin the fuckers and smile!

Because these are the only things that cause me issues on and off and I can get free replacements.
Old 30-12-2012 | 12:26 PM
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Mine peaks 21 but drops to 10 by redline.

Also can't really better 24 mpg round town
Old 30-12-2012 | 10:13 PM
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Done the dv got a APR r1 and a good service, and would like to know why you delete the n75 cos surly with a remap its ok to have the ecu control boost and have it not done just by vac signal ?
Old 31-12-2012 | 08:04 PM
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Originally Posted by Chaz888
Yer a mapping is on the cards but turbos done 100 thou so thinking a rebuilt first ,maybe go hybrid then mapping .
Mine was remapped at 80k, now on 159k. Miles aren't a problem if you look after them.
Old 01-01-2013 | 10:09 PM
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The N75 is the boost control solenoid. Early versions were a little temperamental but any current version is fine. By removing it you remove all boost control from the ECU which is never a good idea.

Rick
Old 01-01-2013 | 11:06 PM
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Originally Posted by Rick
The N75 is the boost control solenoid. Early versions were a little temperamental but any current version is fine. By removing it you remove all boost control from the ECU which is never a good idea.

Rick
I was just about to say that

BTW Andrew is still loving his 500 bhp Audi S3 you mapped last year, took me out in it and its a monster !!!
Old 02-01-2013 | 10:08 PM
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Yea, Andrews is a really nice car, he's built that well
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