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How high can i turn up my manual boost gauge(psi) safely without a fmic. Or should I just invest in a new radiator with an electric fan instead of installing a fmic. Any suggestions will be welcome.



94 Supra TT mods.

HKS exhaust
HKS intake
Blitz bov
along with some others.
 

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The two parts of your question have nothing to do with each other. You can turn up the boost (not the gauge, the gauge will read more as a result) to 20psi if you want on the stock SMIC. Installing a new radiator will do nothing for you unless your radiator now is broken. You said instead of a FMIC, the two have absolutely no correlation unless you have a FMIC and are overheating due to the lack of cooling power of your radiator.

Forget about a new radiator or electric fans. Save your money, buy a downpipe, BCC, and a manual boost controller for what you would spend on a new radiator and electric fans. Hope this helps.
 
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