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max boost what???

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Old 01 December 2008 | 05:13 PM
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Exclamation max boost what???

as above
right fitted a auto gauge boost gauge...60mm .it reads to 30 psi.
car is a 2004 sti type uk with s/s exhaust and k&n filter.
whats the max boost psi ..on the car as standard? i know their 265 bhp
went for a quick blast ...maxing at 20 psi.. is this normal??
gauge resets its self to 0 . on idle its - vac at 18. any info pls. all seems to be working ok. my import classic only boosted to 16 psi
i was thinking along 12 psi for the 2004 sti type uk.
what is max boost on a 2004 sti type uk? any one

Last edited by wrxmad; 01 December 2008 at 07:00 PM. Reason: read gauge wrong
Old 01 December 2008 | 05:49 PM
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From: Wandsworth
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2 bar means ur well over bosting, u should already knw that fella.
Old 01 December 2008 | 06:32 PM
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From: Enginetuner Plymouth for 4wd RR Mapping Apexi Ecutek Alcatek Proper Garage More than just a laptop!
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Not at all normal no, and unlikely to be correct either.
The stock boost control system would cut the engine long before 2 bar and the turbo wouldn't have lasted 5 mins.
Old 01 December 2008 | 09:22 PM
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Martyn I think he means that the fsd is 30 psi., NOT the max reading !

20 psi is around 1.35 bar which I think is around the standard value.

DunxC

P.S. Mine hits 1.6 bar (25 psi) but it's been re-mapped !
Old 02 December 2008 | 06:53 AM
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From: Enginetuner Plymouth for 4wd RR Mapping Apexi Ecutek Alcatek Proper Garage More than just a laptop!
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lol, I can see that now he has edited his post..
Old 02 December 2008 | 04:39 PM
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1.35 would probably be a "peak" reading on the normal map.

My old 2003 STI ran 1.35bar mapped, but peaked 1.55bar
Old 02 December 2008 | 08:11 PM
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It targets just under 17PSI on the stock map.
Old 03 December 2008 | 08:29 PM
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standard shud be 0.9 bar! has it been remapped that u no of? mine has been remapped to 1.7 bar (25 psi)
Old 04 December 2008 | 05:19 PM
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hi no ..its not mapped ..it was checked by jolly green monster via laptop.??
strange? its boosting up to 20 psi...its pulled back timing..at
the moment its at 8 .but reset ecu the other day by taking off negitive off bat. so could be re learning.the cars standard apart form the decat..
strange no fuel cut or lights on dash...?? what is it making bhp wise at 20 psi anyone??
Old 08 December 2008 | 08:16 PM
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any one know what 20 psi would be near bhp?
this car cant be standard 265 bhp at 20 psi can it ??help pls.
Old 08 December 2008 | 08:46 PM
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My STI with PPP peaks at 1.49Bar (21.6PSI)

it holds around 1.3bar for most of the rev range and then starts to drop off towards 1.1bar after 6K
Old 08 December 2008 | 09:02 PM
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From: Slowly rebuilding the kit of bits into a car...
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Hi MartynJ,
mine is currently boosting to 1.9 bar does this mean yer old man is going to have to build me a 2.1 stroker engine ?

LOL

DunxC
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