i have civic 04 EX coupe the car does not exceed 160 km/hr the rpm stay still when i reach the 160 km/hr
the other problem i got a D17A engine i searched for the engine it produce average 123 hr to 127 hr the car acceleration is not good i own a civic 08 1.6 L 123 hr and it to much better in acceleration
any ideas plz

 

I don't know why you're trying to exceed 100mph, but there may be something wrong with the engine if its down on power and not able to exceed that speed.