evo x mr ets downpipe and hks catback problem?
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evo x mr ets downpipe and hks catback problem?
hello i changed my downpipe from UR 3" downpipe and my straight pipes catback to ETS o2 dump and hks hi power. We baseline dyno'd it and the boost were spiking a lot higher than before but there was no increase in power?... I was previously tuned in for 18psi boost with power of 270whp and 240wtq then it hit 21psi but the power only increased to 280whp and 245wtq... my tuner didnt know what caused it because we changed two parts at one time...
btw i was tuned using ecu flash.. any feedbacks?? i dont know what to do
btw i was tuned using ecu flash.. any feedbacks?? i dont know what to do
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