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s2 boost?

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Old 01-07-2006, 09:04 AM
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BLING_IAN
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Default s2 boost?
hi ive recently bought a s2 rs turbo which was running 20psi of boost, as soon as i got it home i turned it down to 10psi. how would i know if it was safe to run it at 20psi again? thanks
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Old 01-07-2006, 09:29 AM
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Rolling road set up is the bestw ay.

Very sensible turning it down, almost guaranteed to of saved yourself from an expensive re-build
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Old 02-07-2006, 12:03 PM
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what sort of boost would u recommend? its gotta 1800 zetec bottom end. is there any way of tellin if it has low comp pistons?
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Old 02-07-2006, 01:14 PM
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You can only really get it set up and see what boost it will sufficiently fuel to.

Is it still running MFI?

Can't really tell anything about pistons short of removing the head
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Old 02-07-2006, 01:24 PM
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do a compression test i bought a rst with a 2litre zvh suppost to have low comp pistons was running 22psi lasted 2weeks them boom take it from me check everything cos it costs ya a fortune
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Old 02-07-2006, 01:26 PM
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A compression test won't necessarily indicate low comp pistons, if say valves are leaking around the seats, rings are worn, etc......
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Old 02-07-2006, 03:19 PM
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Best to have it set up on a rolling road mate if the fuel has been set for 20psi then now you've turned it down it will be over fueling best to let a pro do it mate and not mess with the boost at all your self
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Old 02-07-2006, 08:29 PM
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Thanks for your help. il get it booked in on the rolling road next week! will running at 10psi do it any damage?
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Old 02-07-2006, 09:00 PM
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It can do, you're best to stay off-boost until you get the fuelling and detonation checked out.. (go somewhere that specialises in turbo cars..)
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Old 03-07-2006, 08:12 AM
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If his cars been set to run at 20 maximum it should run less boost and fuel it proportionally.....
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Old 03-07-2006, 08:30 AM
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"If" and "Should" can often be expensive words.
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Old 03-07-2006, 08:34 AM
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Well hes turbed the boost down himself so that shouldnt be a gamble

I know what you mean though running excessively rich can be as bad as lean.

Im glad i didn't use ASSUME in there aswell
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