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Stock EX civic is said to have 127 hp.... generally manual trannies will zap less power than an auto. So 127*(1-0.15)=108
So if you had a good manual tranny, that would make around 108hp, and auto would be more like 20% loss, so then you are looking like 127*(1-0.2)=101hp.
Just for giggles, my truck has a 300hp engine, 4x4 systems (even in 2wd) tend to zap about 30% of the engines power. So 300*(1-.3)=210, which most people dyno around 200-210hp.... pretty sad huh?
Anyway, moving one to the OTHER big point. I'll let you in on a secret, not every engine is the same. Just because Honda says it has 127 bhp, doesn't mean YOUR civic has 127 bhp. So then each while your civic may have 130 bhp, maybe mine only has 124 bhp or even lower. I can't find the numbers right now but I remember that most auto manufactures have a +-5% in the power of their engines, so in theory you could have as low as 121 bhp or as high as 133 bhp. But lets take the 133 bhp, and apply a 15% loss, and we should see a dyno around 113 whp.
Now say you through i/h/e on to that car, and gain maybe 5 whp, now you are up to 118 whp and go bragging about how i/h/e can make 10+ whp, because at 127 bhp you should only be putting down around 108 whp.
So the point is this, without a dyno from before and after the parts in question, under the same conditions, it really means very little.
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you are so wrong s2000man...making 15hp on a civic with baseline 95ish hp is a HUGE cain compared to a chevy ls1 making 350 or so hp. Although the power gain is the same, the differnce is greater in the civic due to the heigher percentage of power gained.
so far, you've been dead on. it's a greater gain percentage wise, because you started with less power to begin with.
Quote:
it will show you that on the quarter mile. How else would 250hp civics run as fast as a SRT-10 making 500hp? Nearly double...
think about that one
you are confusing gains as a percentage vs ACTUAL PERFORMANCE gains.
Guess what... the SRT10 ALREADY MAKES 500hp stock. your comparison is flawed. we are talking about the INCREASE IN PERFORMANCE, not the % of hp gained over stock. one has NOTHING to do with the other.
example:
a 100whp civic gains 15whp with bolt ons. it now goes from say 15.8 stock to a 15.7 stock. in other words, PERFORMANCE WISE it gained .1 seconds in the 1/4 mile. however, horsepower wise, it saw about a 15% increase over stock.
now, a camaro making say 275whp gains 15whp more with bolt ons. once again, since only 15whp was gained, it's still only going to gain about .1 seconds in the 1/4 mile. so it'll go from say 13.1 to 13.0. however, horsepower wise, it saw only a 5% gain in power.
see? one has nothing to do with the other. whether you gain 15whp on a civic or 15whp on a viper, it's only going to INCREASE YOUR BASELINE TIME by about .1 seconds. horsepower affects all cars universally. it doesn't affect one car more or less than another. to do that, you'd have to change the laws of physics.
Last edited by S2000man01; 02-24-2006 at 10:24 AM.
Anyway, moving one to the OTHER big point. I'll let you in on a secret, not every engine is the same. Just because Honda says it has 127 bhp, doesn't mean YOUR civic has 127 bhp. So then each while your civic may have 130 bhp, maybe mine only has 124 bhp or even lower. I can't find the numbers right now but I remember that most auto manufactures have a +-5% in the power of their engines, so in theory you could have as low as 121 bhp or as high as 133 bhp. But lets take the 133 bhp, and apply a 15% loss, and we should see a dyno around 113 whp.
Now say you through i/h/e on to that car, and gain maybe 5 whp, now you are up to 118 whp and go bragging about how i/h/e can make 10+ whp, because at 127 bhp you should only be putting down around 108 whp.
So the point is this, without a dyno from before and after the parts in question, under the same conditions, it really means very little.
speeds relative and there's always going to be someone thats faster then you. You can have a 10sec car, but how often are you going to be able to use all that power? Familyguy bought a civic because it fits his lifestyle.
I'm thinking of doing a swap, because my friend did it for his em2. It had decent amount of power and his car still got 35mpg because his car was so light.
__________________ 04 Civic Coupe with aero kit =sold
94 Integra 3dr= sold
02 c32 mercedes amg = new project
putting 5hp in a go kart will get down the track faster than putting 5hp in a 3 ton dump truck. percentage wise, the hp is the same........
right, but now you're talking something that weighs 100lbs. vs something that weighs 6,000lbs. and, please feel free to re-read my previous post, as I already talked about this.
ahem:
Quote:
Originally Posted by S2000man01
15whp will knock off no more than about .1 seconds on just about ANY car, civic OR LS1. the only measureable variance here will be gearing and weight. and even then overall it has very little effect
the variance on 15whp on a civic and 15whp on a camaro will be fairly negligible.
i dont make crap up. i tell it like it is. i didn't just fall off the turnip truck yesterday ya know.
15 whp in a 2500 pound civic will have more effect than 15 rwhp in a 3500 pound camaro.
hm?
I still think it would propel it a little faster than just .1 seconds ... especially since it starts off with such little power. I don't know ... that's my logic for you.
maybe .2 if you are extremely lucky and get a great powerband out of the hp. if your just getting a 15hp spike in the powerband you are doubtful of breaking .15
15 whp in a 2500 pound civic will have more effect than 15 rwhp in a 3500 pound camaro.
hm?
I still think it would propel it a little faster than just .1 seconds ... especially since it starts off with such little power. I don't know ... that's my logic for you.
yes, 15whp will have more effect on 2500 pounds vs 3500 pounds. but not the .8 seconds or whatever the other guy was trying to claim.
honestly, 15whp is going to give you .1 seconds in the 1/4 mile on your civic. the camaro might get like .07. lol.
even if the civic got .15 seconds from the 15whp, that's still close to stock to me. people are arguing with me on something that's literally a matter of maybe a .05-.1 second variance. come on!
maybe .2 if you are extremely lucky and get a great powerband out of the hp. if your just getting a 15hp spike in the powerband you are doubtful of breaking .15
even if the civic got .15 seconds from the 15whp, that's still close to stock to me. people are arguing with me on something that's literally a matter of maybe a .05-.1 second variance. come on!
you are confusing gains as a percentage vs ACTUAL PERFORMANCE gains.
