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Safe Boost Level

Tech Talk for Nissan owners.

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Safe Boost Level

Post by Burdy »

My GU ute goes in next week for a tune just wondering what amount of boost is safe to run which give's me good power/fuel economy but does'nt compromise engine life was thinking between 12-14psi
Any help is greatly appreciated

Cheers Ian
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Post by Tomo_89 »

it doesnt really matter what boost you run.. its the mixture of fuel and air. on a stock fuel pump though there isnt much point going above 14psi
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Post by maccasMQ »

anything under 40psi actually damages yout motor as it will run too rich. i would say 44 psi would be safe
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Post by roverrat »

maccasMQ wrote:anything under 40psi actually damages yout motor as it will run too rich. i would say 44 psi would be safe
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Re: Safe Boost Level

Post by weeman »

Burdy wrote:My GU ute goes in next week for a tune just wondering what amount of boost is safe to run which give's me good power/fuel economy but does'nt compromise engine life was thinking between 12-14psi
Any help is greatly appreciated

Cheers Ian
that should be fine, just get a pyro to monitor temps...

i ran virtually 15psi from when i bought the vehicle now 150k....

The last 35k, i have been running 28psi no issuess what so ever boot is your friend, just make sure the mixtures are right...
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Post by PGS 4WD »

All turbo's have an efficiency zone, if you run more boost than the turbo can produce whilst maintaining minimum outlet air temp all that happens is you substitute air volume for heat. Boost is not what makes the cylinders full, it is the volume of air, a small turbo at high boost can produce less power and more intake heat (resulting in higher EGT's) than the same combination when running more moderate boost levels.

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