Impressive numbers for 91 octane fuel. That's almost a 100whp increase.
A gain of 93whp by adding just headers, nothing else ??
Would have expected a re-tune after the install..
It made 741/560 with the headers.Thats no joke. Id spin it a little higher tho ur definitely at 700 whp if so.
Those numbers make me like jelly! Most power any car I've owned/driven was 504whp. It's hard for me to imagine 741whp, let alone 900, 1000, 1100. And they're all streetable!