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nikitopo · 09-15-2016, 08:37 AM

A gain of 10-12whp is because of the tune. The rest is because of the header. You should compare gains between a tuned car w/o header and a tuned car with header.

09-15-2016, 08:37 AM	#152
nikitopo Senior Member Join Date: Mar 2014 Drives: '15 BRZ RA Location: Greece Posts: 3,787 Thanks: 2,417 Thanked 1,947 Times in 1,263 Posts Mentioned: 29 Post(s) Tagged: 0 Thread(s)	A gain of 10-12whp is because of the tune. The rest is because of the header. You should compare gains between a tuned car w/o header and a tuned car with header.