S4 Turbo what PSI is most efficent, for the most power?
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Daily Domestic Killer
Joined: Mar 2001
Posts: 2,425
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From: San Antonio, Tx, USA
S4 Turbo what PSI is most efficent, for the most power?
Just wondering before I have to go to the dyno, I realise that more boost doesn't always make more power, just wondering from your experience, I realis it will be differnt for diff intercooler exhaust setups but what is generally a good psi for losta power 12,13,14,15? I will most likly be getting a BNR upgrade soon and I know it won't last very long at that pressure...
Rotary Enthusiast
Joined: Nov 2002
Posts: 1,021
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From: -
The limit for the stock turbocharger seems to be 13-15psi. Anything more and you are overspinning/overheating the turbocharger and not making any more power really. It's uncomman to seem someone above 14 psi.
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