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Forced Induction & Engine Management
Evo1 speedcut,max boost,plug question.
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<blockquote data-quote="FatAssRubber" data-source="post: 2810788" data-attributes="member: 48972"><p>refering to fuel regulator, jinkl's last comment was correct. Leave it std unless you are doint something like 1.8 bar. </p><p></p><p>again, please ask all the salesmen and half baked mechanic to go to hell if they try to push you to buy regulator. not that you want to be boastful (or me) but its all in the engineering. </p><p></p><p>What we want to achieve in fueling pressure is not the volume of fuel as most people think. its the pressure differential of nozzle pressure (fuel rail pressure) versus manifold pressure. which bigger difference, better atomization & more temperature drop which prevent knocking and smoother firing. not to rich it up. Actually, higher fuel rail pressure means less effective fuel volume from your fueling system. Those who "ada baca" all understand that "Isipadu adalah fungsi sonsang terhadap Tekanan" </p><p></p><p>Instead of changing fuel regulator, get a bigger pump to bump up the pressure with more volume. </p><p></p><p>Rule of thumb, fuel rail pressure should be around 30 psi (2 bar) min above manifold pressure. Therefore, if you are boosting 0.7 bar (11psi) then you rail pressure should be 41 psi, 2.7 bar min. if you are boosting at 1 bar, then 3 bar rail pressure. Some stupid mechanic simply tell you 60 psi. That because he may have worked on something like GTR or Evos which boosted up to 2 bar.</p><p></p><p>Most cases when people listen to the mechanic and do so, increase the pressure , the pump work much harder and deliver less fuel. when the fuel is too little... kaboom goes your engine. and you can sell back the regulator to the shop so he can con another owner.</p><p></p><p>anyway.. have fun with my 2 cents worth of information...</p></blockquote><p></p>
[QUOTE="FatAssRubber, post: 2810788, member: 48972"] refering to fuel regulator, jinkl's last comment was correct. Leave it std unless you are doint something like 1.8 bar. again, please ask all the salesmen and half baked mechanic to go to hell if they try to push you to buy regulator. not that you want to be boastful (or me) but its all in the engineering. What we want to achieve in fueling pressure is not the volume of fuel as most people think. its the pressure differential of nozzle pressure (fuel rail pressure) versus manifold pressure. which bigger difference, better atomization & more temperature drop which prevent knocking and smoother firing. not to rich it up. Actually, higher fuel rail pressure means less effective fuel volume from your fueling system. Those who "ada baca" all understand that "Isipadu adalah fungsi sonsang terhadap Tekanan" Instead of changing fuel regulator, get a bigger pump to bump up the pressure with more volume. Rule of thumb, fuel rail pressure should be around 30 psi (2 bar) min above manifold pressure. Therefore, if you are boosting 0.7 bar (11psi) then you rail pressure should be 41 psi, 2.7 bar min. if you are boosting at 1 bar, then 3 bar rail pressure. Some stupid mechanic simply tell you 60 psi. That because he may have worked on something like GTR or Evos which boosted up to 2 bar. Most cases when people listen to the mechanic and do so, increase the pressure , the pump work much harder and deliver less fuel. when the fuel is too little... kaboom goes your engine. and you can sell back the regulator to the shop so he can con another owner. anyway.. have fun with my 2 cents worth of information... [/QUOTE]
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Evo1 speedcut,max boost,plug question.