KUALA LUMPUR (AFP) - Rory McIlroy's post-Augusta rehabilitation gathered pace Friday at the Malaysian Open as he carded an eight-under-par 64 to surge to the joint clubhouse lead in steamy Kuala Lumpur. The 21-year-old Northern Irishman, who lost his clubs en route from his US meltdown to Malaysia, hit five birdies in an outward 31 after a solid showing in Thursday's first round. Three more birdies followed to propel him into a share of the lead with Swede Alexander Noren, who backed up a brilliant opening round of 64 with a respectable 69. The impressive pair were out in front with a two-day total of 11-under-par 133. "Yeah, I played really good today. I hit the ball well and gave myself chances and made some putts," said McIlroy, the world number 9. "Eleven under after two days here is a great effort considering I've travelled so far and not seeing the course. Hopefully the crowd will come out again and support us." Englishman Simon Dyson, who has performed consistently well in Asia, is one shot adrift of the leaders after shooting a spectacular 64 which included birdies on his final three holes. "I wasn't feeling my best yesterday and went back to my room and straight to bed. I woke up this morning and felt better again and managed to get it going with eight birdies and no bogeys. I'm really pleased with that," Dyson said. World number one Martin Kaymer again failed to get his game going and is eight shots adrift of the leaders after a second-round 71. McIlroy was among the few golfers lucky enough to finish their rounds as lighting and rain stopped play for two hours and 40 minutes in the late afternoon. Bad weather prevented 77 from completing their rounds after played resumed late on Friday. Among those affected is defending champion Noh Seung-Yul, who is at risk of missing the projected cut of even-par 144. The South Korean, who shot a one-over 73 on Thursday, struggled with his putter on Friday, and is currently two-over through 13 holes.