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Time for a CP-e Stage 2 engine
Well, I finally found out why my MS6 had a KR issue and couldn't tune it out. I developed a rattle sound at moderate load around 2500-3300 rpm. scared I would never rev more after I heard the sound. Sounded like the timing chain hitting the valve cover. Bite the bullet to replace the VVT, timing chain and tensionors. I brought the car to CP-e to re-flash my ECU back to stock for an AP and get the work done.Work done except for ECU (still working that). Mechanic drove the car and said what the hell is that noise. After few weeks of diagnostics, removing the oil pan, removing the cylinder head andstressing the engine to find where the rattling is coming from, Sander and Darren determined cylinder 3 was toast. The car started sounding worse each time they ran it. exhaust started running lean.
Well, they scoped the cylinder found the valve inside. Probably the valve was failing (stuck slightly open), hitting the piston and after numerous runs failed and fell in during one of the diagnostics.
So, CP-e is working with me to build a Stage 2 engine. Going with a short block and stage 2 pistons. I want greater reliability. The head is being serviced, moving over everything my my old engine and dressing up the VC and timing cover with black crinkle. May choose to get a new clutch depending on wear. Getting an AP.
This holiday season is lightening my wallet but bringing a big smile to my face in the new year.
06 MS6, MS wheels 18x7.5, Conti DWS P225/45-18, Magnaflow CB, CS Strut bar, Bilstein shocks, TT Diff Frt mount, SP slotted rotors, Hawk pads, Whiteline RSB, JBR Thermal Gaskets. Cobb AP, GTX2867r, Snow Stage2 WMI
RPM: Sport Springs, Shark Fin, LED side markers
CP-e: HPFpump, TIP, Xcel CAI, Catted DP, Tial w/ BOV Flange, gauge pod, TMIC, Safeseals, MZRevolved Stage 2 block, MZR Xslip Stage 1 clutch, RMM, LTRmani, xFlex diff mount
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Last edited by Poohster; 12-25-2012 at 04:47 PM.