Yeah, crxneedwork, I have a jdm B16 also in my 91 Civic Si & I was only able to top out at 115 until I have my ecu chipped & only got to 125. It was only once because just wanted to see what it would do. Not worth it on roads. Hard to believe that the B16 hit 140.How could you tell you was at 140 since our speedo only goes to 125. What kind of work did you get done? All motor/Turbo?