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Old 09-16-2018, 01:35 AM   #1
Turbo
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Boost controllers & fixing high RPM power dip

Hey guys-

Attached is a dynapak dyno plot of my boosted FR-S.


The car is currently running without any kind of electronic boost controller. TheTiAL style 32mm wastegate (that dumps to atmosphere) is just running with a 6psi spring.

Looking at the plot, I'm not reaching full boost until about 4,500RPM. Any idea how much this will improve with an EBC? And are all EBCs created equal? I believe I'm running a T3 6063 ball bearing turbo.

My car has an ECUtek flash, so I presume the ECU could be programmed to run the EBC when I have it re-tuned? Which one would you guys recommend?


My second question is - what mods could be done (before my re-tune) to eliminate (or minimize) the HP dip that occurs after 6,750RPM?

Is this something a throttle body spacer, larger throttle body or intake spacer like the Crawford powerblocks would help with?

Any other (relatively cost effective) mods you guys would recommend looking at before having a re-tune done?
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