max boost on stock t28 turbo

weblizzer

New Member
hello everyone!

what is the max boost can handle on stock t28 turbo of gtir?.... i'm currently running on .9 bar ideally.. but i want to know if what is the safe max boost for it?..

let say if i want to change to 560cc injectors.. can i raise up the boost on it?

Thanks
 

PobodY

Moderators
Staff member
Your best bet is to put a wide-band lambda sensor in the exhaust and see how much you can turn it up before the mixture is compromised. - I don't think it's got a lot of overhead in it, so if you want more boost with bigger injectors you probably want a bigger turbo too.
 

Fire & skill

Vintage member
Ive ran 1.3 with a daughterboard, was RR checked, fuelling was ok, inj duty at 97% and 332bhp - id say that's as much as you'll get!
bear in mind you'll prob need an uprated clutch to run that much boost not to mention an uprated fuel pump. I was using an electronic boost controller, no spikes with it. When youre running higher boost there is also a chance of leaks - check all your intercooler hoses are on tight and if possible get the clips changed to mikolor
 
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