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The BMW Range
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E38 728 I performance enhancement
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<blockquote data-quote="niceputera" data-source="post: 450554" data-attributes="member: 2213"><p>Slide,</p><p> </p><p>I've tune up few engines before from different brands. Too make add power the formula is the same regardless of the engine brand. U put in more air, more fuel and with the correct exit route, it will make power. BUT the key point here is how to put the correct ingredients to make the engine works in harmony thus making more power.</p><p> </p><p>Anybody can do exhaust, intake, cams, port & polish ect. But the same procedures done by different tuners will produce different HP & touque figure. The Q is why? One of the A is that different tuners have diff skill, knowledge & Exp. </p><p> </p><p>Eg - And different point of air filter positions will produce diff resonance so will the diff in the speed of air travelling into the intake manifold. So diff power at diff rpm band. A set degree of cams will only delibrate the full power at a specific compression ratio. A diff diameter in primary , secondary and last piping is necessary if we would like to produce a specific hp and torque curve at a specific power band. It's all related. It's all needs to be working together with harmony - that's the key in producing a high and reliable power. Not many malaysian mechanic have that kind of knowledge and tools for that objective. Overseas - a lot. So if somebody says their mechanics can't produce that kind of power - than the mechanics need to learn more. Gain more knowledge. The engine, any engine has potential to improve. It's the tuners that have the limited resoucers to do so.</p><p> </p><p>Some of my previous tuned engines: Power & Torque at Engine dyno.</p><p> </p><p>Mitsubishi 4G93P 1.8cc - std 139hp @ 6500rpm, 163Nm @ 4500rpm</p><p> tuned 220hp @ 7800rpm, 260Nm @ 3200 - 7200 rpm </p><p> </p><p>Alfa Twinspark 2.0cc - std 150hp @ 7000rpm, 180Nm @ forgot</p><p> tuned 240hp @ 7800rpm, 260Nm @ 4000++ till 7000 rpm</p><p> </p><p>Note - some of the figures stated above might not really accurate coz it was more than 5 years back. I left the tuning scene for some time already. Can't really remember the exact figures, but you got the pictures. And the above engines was very reliable for daily usage. Been using them for many years before selling the cars to new buyers. And for what I knew, the engines still being use by the current owners. :top:</p></blockquote><p></p>
[QUOTE="niceputera, post: 450554, member: 2213"] Slide, I've tune up few engines before from different brands. Too make add power the formula is the same regardless of the engine brand. U put in more air, more fuel and with the correct exit route, it will make power. BUT the key point here is how to put the correct ingredients to make the engine works in harmony thus making more power. Anybody can do exhaust, intake, cams, port & polish ect. But the same procedures done by different tuners will produce different HP & touque figure. The Q is why? One of the A is that different tuners have diff skill, knowledge & Exp. Eg - And different point of air filter positions will produce diff resonance so will the diff in the speed of air travelling into the intake manifold. So diff power at diff rpm band. A set degree of cams will only delibrate the full power at a specific compression ratio. A diff diameter in primary , secondary and last piping is necessary if we would like to produce a specific hp and torque curve at a specific power band. It's all related. It's all needs to be working together with harmony - that's the key in producing a high and reliable power. Not many malaysian mechanic have that kind of knowledge and tools for that objective. Overseas - a lot. So if somebody says their mechanics can't produce that kind of power - than the mechanics need to learn more. Gain more knowledge. The engine, any engine has potential to improve. It's the tuners that have the limited resoucers to do so. Some of my previous tuned engines: Power & Torque at Engine dyno. Mitsubishi 4G93P 1.8cc - std 139hp @ 6500rpm, 163Nm @ 4500rpm tuned 220hp @ 7800rpm, 260Nm @ 3200 - 7200 rpm Alfa Twinspark 2.0cc - std 150hp @ 7000rpm, 180Nm @ forgot tuned 240hp @ 7800rpm, 260Nm @ 4000++ till 7000 rpm Note - some of the figures stated above might not really accurate coz it was more than 5 years back. I left the tuning scene for some time already. Can't really remember the exact figures, but you got the pictures. And the above engines was very reliable for daily usage. Been using them for many years before selling the cars to new buyers. And for what I knew, the engines still being use by the current owners. :top: [/QUOTE]
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