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Message: <blockquote data-quote="kelvin_goh999" data-source="post: 1735287" data-attributes="member: 14202"><p>Guys,</p><p></p><p>Can anyone help me the problem above?</p><p></p><p>Im driving a Cefiro with Skyline GTS engine RB20T. The problem that I'm having is when I test my car on the straight road (DRAG), 1st gear when I press full on the fuel pedal, it goes up to 0.8bar & when it reaches around 5k-7k rpm, the boost drop slowly until 0.6-0.7bar. It sames goes to 2nd gear, 3rd gear, 4th gear & 5th gear. (I try it in d afternoon & night as well).</p><p></p><p>Anyone experience this before or can help me to figure out what is the problem? I think a normal turbo car should be maintain the boost. Am I right?</p><p></p><p>By the way, my RB20T is standard. I just modified air-filter & exhaust only.</p><p></p><p>Your help & advice would be appreciate. Thanks.</p><p></p><p>P/S: Got a friend told me that the actuator spring is not strong enough anymore, so it opens more & the boost drop when it reaches high RPM. Do you guys think so? He ask me to modify & add additional spring on the actuator.</p><p></p><p>Kelvin</p></blockquote><p></p>

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