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<blockquote data-quote="SomeGuy_sg" data-source="post: 406631" data-attributes="member: 5482"><p>Wastegate or BOV ? </p><p>If you are talking about the stock turbo with internal wastegate on your engine , You would only need to port out your internal wastegate on the turbo . I would think that the ported wastegate port exhaust flow would be cheaper and better way to go . .9 Bar is do-able . But i do like to warn you that most stock turbos efficiency run out about about 1Bar . </p><p></p><p>If you already have a after-market turbo , than you would like to get an upgraded external wastegate . I would choose the wastegate on the type of turbo and the amount of boost you would be running . For a 1.8 engine a good turbo would be a Garrett GT28 series BB turbo. With that turbo running medium to high boost . A 38 or a 40 mm wastegate would be recommended (with high boost , you would get a harder spring for the wastegate) Tial makes nice wastegate and medium range prices . </p><p></p><p></p><p>Please take care thou . General rule of thumb , if you are aiming for a 20%-50% power up stock turbo engine will do fine . If you are aiming for power levels above 70% . Plus upgrade your engine to match . </p><p></p><p>Remember Piston , Con-rods and crankshaft , main components first . </p><p></p><p></p><p>ps; Take everything with a pinch of salt , everything i said is from my point of view :) Drive safe</p></blockquote><p></p>
[QUOTE="SomeGuy_sg, post: 406631, member: 5482"] Wastegate or BOV ? If you are talking about the stock turbo with internal wastegate on your engine , You would only need to port out your internal wastegate on the turbo . I would think that the ported wastegate port exhaust flow would be cheaper and better way to go . .9 Bar is do-able . But i do like to warn you that most stock turbos efficiency run out about about 1Bar . If you already have a after-market turbo , than you would like to get an upgraded external wastegate . I would choose the wastegate on the type of turbo and the amount of boost you would be running . For a 1.8 engine a good turbo would be a Garrett GT28 series BB turbo. With that turbo running medium to high boost . A 38 or a 40 mm wastegate would be recommended (with high boost , you would get a harder spring for the wastegate) Tial makes nice wastegate and medium range prices . Please take care thou . General rule of thumb , if you are aiming for a 20%-50% power up stock turbo engine will do fine . If you are aiming for power levels above 70% . Plus upgrade your engine to match . Remember Piston , Con-rods and crankshaft , main components first . ps; Take everything with a pinch of salt , everything i said is from my point of view :) Drive safe [/QUOTE]
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