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Originally Posted by m4ugr8 Wait a minute, If these figures are from a STOCK civic, can somebody explain how this matches with the remapped civics dyno figure?? The total BHP in both the cases is almost the same ~117 BHP. I am in a fix here, because I am running the same remap which is giving me a gain of 0.3 BHP. |
Sorry to say, but upsized wheels or no wheels, the remap certainly isn't as impressive as I'd have thought. Except for minor changes in the torque delivery, the outright BHP rating is more or less the same. While the remap'ed Civic does seem to have li'l more torque at lower rpm, and that's a good thing, the stock Civic makes
MORE peak torque.
I would have expected a remap to bring atleast 10 - 12 BHP more to the table. But that is clearly not the situation here. I can't see more than a marginal difference, and doubt it makes any difference in the real world.
I was sitting on the fence between a remap & a race dynamics box (with race dynamics mapping); this comparo is tilting me toward the race dynamics now. Anyways, both cost about the same $$$.
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Originally Posted by lancer_rit In GTO's graph, the torque crosses 80 (as in y-axis label) @2200rpm, while in the remapped dyno graph, the torque crosses 80 @ ~1800rpm! |
Ignore the rpms; they aren't the most accurately calibrated & you can expect a 2 - 5% difference. Karan took the car to 3,000 rpm (from inside the car) and then asked Rehaan to hit a computer button (outside the car) to calibrate.
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Originally Posted by Venom_rider Strictly speaking from the numbers in the graph, your remap doesn't seem to be doing any good.
Look for yourself: Torque ........ Stock(RPM) ........ Remapped(RPM)
20 .............. 400 ..................... NA
40 .............. 600 ..................... NA
60 .............. 600-650 ............... 1300
80 .............. 800-900 ............... 1600
100..............1200 ..................... 4000
Max Torque: Between 4K-5K RPM in both the machines. Clearly any decent torque available is only after 2000 RPM, unlike the stock civic that hits 100 at as low as 1200RPM (80 comes even lower)!!!
Something isn't right here. The stock curves for both Torque and BHP seem to suggest a more responsive engine & if GTO is complaining about low end Torque with these figures... |
We were also having a discussion on another Civic thread about the way that Honda has tuned the drive-by-wire. I think the poor low end driveability is the outcome of torque as well as a dead throttle.
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Originally Posted by dragger did you check the wheel diameter on both the civics which are in comparision over here,that seems to make a difference on overall output on karan's dyno i believe,cheers..! |
The diameter of 195/65 R15 & 225/45 R17 is a near identical 634.xx mm.
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Originally Posted by viper The car that was dynoed was running 225/45/17 wheels. Rim & tyre size does play a role on dyno readings. |
I don't entirely buy that. First, the overall diameter is nearly identical. Second, fatter tyres can lead to a MAX 2 - 3 BHP loss at the max for a 195 -> 225 upgrade.
I just checked your thread and the car was running a K&N + exhaust. So you are saying that a Civic with a performance exhaust + intake + remap will put out the EXACT same BHP (and lesser peak torque) as a stock Civic? There is definitely something wrong, either with the remap or its a weak link with that car. Whatever it is, and honestly, that guy better sort it out else he's wasted his money.
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It could give out more or less depending on the engine & tune condition of your car.
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Note that my car is running in completely stock tune. No change at all.
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Whilst comparing make sure that both cars are identical in all ways.
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I wish you'd have taken a dyno of that particular Civic BEFORE & AFTER the remap. That's the only real way to gauge any difference. Without it, I'm inclined to believe that the remap has made a very negligible difference, if at all.