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The mkiv Supra Owners Club

UK / Jspec turbos


flyby

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Max pressure or max pressure before it becomes pointless?

 

1.5 bar is possible, maybe more, 1.25 is about as high as you should go though, beyond that you just generate heat and no extra power.

 

Double decat? Are you using a boost controller?

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My Jap car has UK turbos.

 

High setting is currently 1.15bar... so can I turn it up a little to 1.2, or 1.3?

 

No, leave it where it is to be safe. It still has the jspec ECU and injectors so fueling will be a major concern above 1.15bar

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If you have a boost controller then that would explain the extra boost.

 

It is not a case of what the turbo's can take (UK and jpsec are more or less the same), fuel supply and map is the issue here.

 

UK turbo's on a jspec car will be detrimental to the performance as the ECU isn't mapped for them.

 

Read here: bpu

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