08-27-2014, 10:48 AM | #221 | |
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For example: 300 lb ft of torque at 5000 rpm is 285 hp 500 lb ft of torque at 2000 rpm is 190 hp But the last tune (car) will break the rear tires lose and I will beat the higher hp car big-time in a short drag race, like from one light to the other. At higher rpm's and over a longer drag race the higher hp car will win because hp is the amount of work done over time (think 1/4 mil times, which is a useless unit of measure for modern street cars with access to so much torque). For street applications, take the higher torque every time because the power is 1000 rpm off idle whereas the other car has to get to 5000 rpm to get the benefit of the full torque. The first car above has a long linear power curve and the second car has an alpine curve, nearly vertical, from the start. For cruising, torque is also more important than a big hp number. Look at large highway trucks with 12L motors putting out 475 hp and 1700 lb ft of torque. Granted the rpm curve is flat, but who cares when cruising with 6-8 speed tranny's. Now, for the track, big torque over a lot more usable rpm (which means high hp) in lightweight cars, carefully engineered in the power curve (transmission and rear-end combo's), win races.
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08-27-2014, 11:18 AM | #222 | |
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X5 F15 - gone after 5 months!
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08-27-2014, 12:15 PM | #223 | |
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Manufacturer's numbers are crap anyway, but they are close for the crank.
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08-27-2014, 12:26 PM | #224 | |
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08-27-2014, 01:34 PM | #225 | |
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My point addresses catflap's comments that implied ACS is bullshitting the reader by increasing or addressing torque independently. HP and torque are independent. HP is the result and the remaining components are independent values. Again, my point is that you can reduce hp (the result and the misplaced holy grail), greatly increase torque and have a better performing street car.
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09-14-2014, 03:42 PM | #227 | |
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-S1 on the Ultimate is an internal parameter and most gasoline engines remain at 1. -S2 on the Ultimate calls different maps and changes power output.
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09-15-2014, 11:40 AM | #228 | ||
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It's good to be bad
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10-21-2014, 12:35 AM | #230 |
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Hello guys...after i red all your posts i decided to get a racechip,the pro2 model...i own a X5 4.0d model,the F15 one....Racechip came with the E/0 setting,wich is about 15% increase in performance,according to Racechip staff...after about 100 km i changed the settings to E/2 and didnt have any problem....then,after a few more km i changed to 0/3,a setting suggested by the Racechip technik staff,setting wich they sad is on a similar engines that they have,and,unfortunatelly,at about 160Km/h and about 3500revs the engine start to choke.Is someone here who own a 4.0 model?if so,can you share a good setting for that model?i dont want to reach the 30% increase in power like Racechip claim is possible but around 25%,a ballance between power and consumption.
I want to thank you all for sharing your experience with rachip and thank you in advance for answer I am living in Europe btw |
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07-12-2015, 06:50 PM | #232 | |
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I recommend you put up a duplicate threads under 540d, which has the same engine. |
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07-12-2015, 07:03 PM | #233 |
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Thank you for answer MattBianco but i quit using that rc pro....i tried several settings and engine stil choking after 3500 revs....without rc pro engine run smooth even at 230 km/h....once again thank you for suggestion,i wish you amd all BMW lovers,all the best
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07-12-2015, 09:15 PM | #234 | |
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Also, if money is not a concern, look at G Power. |
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01-19-2019, 12:47 PM | #235 |
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Codes after installation?
Hi yawl, installed a Race Chip GTS Black yesterday and this afternoon I threw the following codes. Anyone seen this before or have any ideas. Car is still running great and no discernable affect to performance. Thanks so much!
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