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Model specific boards => Golf mk4 => Topic started by: shaft69 on 12 April 2012, 09:43

Title: ko3s max boost pressure???
Post by: shaft69 on 12 April 2012, 09:43

Any one know max boost psi ko3s can take safely?

Title: Re: ko3s max boost pressure???
Post by: wretch20vt on 12 April 2012, 11:15

id say 25-27 psi before you hit limp mode

Title: Re: ko3s max boost pressure???
Post by: Chris. on 22 April 2012, 13:58

You can hit limp at any psi...

Title: Re: ko3s max boost pressure???
Post by: shaft69 on 22 April 2012, 15:09

Hitting 21psi now with forge actuator fitted, a lot better midrange now.

Title: Re: ko3s max boost pressure???
Post by: wretch20vt on 22 April 2012, 15:35

Quote from: Chris. on 22 April 2012, 13:58

You can hit limp at any psi...

hows that? if you go over a certain psi which the ecu thinks could cause damage then it chucks itself in limp mode to stop it

Title: Re: ko3s max boost pressure???
Post by: Chris. on 22 April 2012, 15:50

Psi isnt the only factor that can put a turbo/ecu into limp mode.

Title: Re: ko3s max boost pressure???
Post by: wretch20vt on 22 April 2012, 15:55

i no but the guy is talking about boost nothing else!

Title: Re: ko3s max boost pressure???
Post by: shaft69 on 22 April 2012, 16:55

Previously before forge  fitted was hitting 19 and held at about 14/15 psi. After fitting forge get 21/22 and holds at  18psi. When previously fitted j n75 valve caused over boosting turbo was squealing and going into limp mode reverted back to f valve. My map much push n75 valve limit.