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Eterna Twin Turbo
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<blockquote data-quote="actuator_bypass" data-source="post: 134298" data-attributes="member: 4976"><p>I'm not expert in any twin turbocharger. But it's my opinion after changing 5 turbo..</p><p></p><p>I assume you're ready for fuel, ignition and else.. Let's say the td04* turbo flange is not same as TD025. Meaning that U still have to customize it.</p><p></p><p>Power would be differ because changing of compressor size, and diffrent CFM load.</p><p></p><p>I think stock twin turbo(td02) will be faster on accelaration compare with td04.</p><p>A bit lag, ie boost kick at above present boost kick . </p><p></p><p>A good choice of turbo where it should be bigger than stock?? I think you should take the td04 twin blade.. Because I experiened it on Daihatsu L2 engine where Single blade td04 turbo put more lag compare to td04 twin blade.. and IHI RHF4 VF14 have less lag than td04 twin blade.. But Daihatsu L2 modifier usually searching for td04 diesel turbo where the turbin smaller than petrol engine.. The A/R of turbo is different.</p><p></p><p>If your thinking to make it Sequential Turbo the problem appear where there's a loop at your hp graph.. (tested on GTR).. when changing boost kick at your secondary turbo but it put a good accelaration compare to parallel turbo.</p><p></p><p>Parallel turbo would be better if you searching for better top speed or boost kick above RPM4000.</p><p></p><p>About uncontrolable boost spikes.. you need to change to external wastegate or harder actuator_bypass valve :P ie HKS actuator.. heheehe small turbo no need laa </p><p></p><p>That's my opinion</p></blockquote><p></p>
[QUOTE="actuator_bypass, post: 134298, member: 4976"] I'm not expert in any twin turbocharger. But it's my opinion after changing 5 turbo.. I assume you're ready for fuel, ignition and else.. Let's say the td04* turbo flange is not same as TD025. Meaning that U still have to customize it. Power would be differ because changing of compressor size, and diffrent CFM load. I think stock twin turbo(td02) will be faster on accelaration compare with td04. A bit lag, ie boost kick at above present boost kick . A good choice of turbo where it should be bigger than stock?? I think you should take the td04 twin blade.. Because I experiened it on Daihatsu L2 engine where Single blade td04 turbo put more lag compare to td04 twin blade.. and IHI RHF4 VF14 have less lag than td04 twin blade.. But Daihatsu L2 modifier usually searching for td04 diesel turbo where the turbin smaller than petrol engine.. The A/R of turbo is different. If your thinking to make it Sequential Turbo the problem appear where there's a loop at your hp graph.. (tested on GTR).. when changing boost kick at your secondary turbo but it put a good accelaration compare to parallel turbo. Parallel turbo would be better if you searching for better top speed or boost kick above RPM4000. About uncontrolable boost spikes.. you need to change to external wastegate or harder actuator_bypass valve :P ie HKS actuator.. heheehe small turbo no need laa That's my opinion [/QUOTE]
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