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· Basically Stock
2009 GS Turbo. 2007 Mid Engine GT
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Hey bro, how did you go about doing the compression test? Obviously you had to remove the intake manifold?
WITH THE CAR HOT:

Intake manifold off, remove all your coil packs (will need to be off when checking those cylinders anyway), unplug your crank position sensor (won't fire fuel or spark), pull the spark plug for the cylinder you're checking, put in your compression tester, crank the engine a few seconds


Cold compression testing numbers aren't of much value unless you're chasing a bad cylinder, as nothing will be sealed
 
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