Ok so i have a 97 civic EX and ive done the intake, header, exhaust combo, what kinda of horsepower should the car be making compared to the 127Hp stock number

 

well, the car's 10 years old, so you have to account for the wear and tear...

there's really no good way to tell except you getting a dyno, which btw, i wouldn't recommend, since it's only a few bolt ons. i'd guess anywhere from 90-120 (i know this is a large range mind you)

 

why would he have lost almost 40 horses? I mean i know its gettin up there in years and miles but thats a bit extreme...

 

with my car's make, d17a1 A/T (114HP), i've seen a dyno of 102HP (stock). Add in the wear and tear of 10 years, I think you'll find yourself in the 9X's HP range. Adding IHE on mine, will probably do 5-10HP. So maybe it'll be back at the 102ish...

but you're right flip, 40 is really extreme [&:] my bad lol

 

^ understable, i'd agree and say 100-110 would be a good guess on your 10 year old engine

 

Not to mention that the 127hp figure is power produced at the crank. You usually lose a good deal of power in the drivetrain. 100-110hp would be a good guess for an older engine with just basic bolt-ons.