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not sure to say, I'm on the 9.4psi spring on the gt2860rs putting down 240whp/200tq atm. Relatively Im sure there is more room for power with only the 9.4 spring operating the boost level. Picked up the grimmspeed ebcs and wondering if cranking out another 1-2psi would put down another 15-25whp. Still new to the boost game, bear with me haha
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