http://forum.lowyat.net/ Sat, 04 Jul 2026 18:04:43 +0800 FeedCreator 1.7.2 http://forum.lowyat.net/topic/1290461 Hi All,<br />Need your help. <!--emo&:help:--><img src='http://static.lowyat.net/style_emoticons/default/icon_question.gif' border='0' style='vertical-align:middle' alt='icon_question.gif' /><!--endemo--> <br />Im driving waja 4g18(A) &amp; the problem is the gearbox jerking when changing the gear.It happen after i chg the extractor 4-2-1 &amp; remove the catcon.<br />i think bcoz loss of the back presure.<br />what should i do??<br /><br />Thanks samurai_laju The Fast &amp; The Furious Mon, 11 Jan 2010 16:02:09 +0800