I have had my HKS SRI in for about a year know and it happens just about every day still. I have gotten used to it know, but it still freaks anyone riding in the car with me out of their mind!
do you think our cars have bad valve seals, I am saying maybe the valve seals arnt sealing enough on the intake side and a little gas vapor is coming out and detonating near or in the manifold......thats just a ROUGH thought......
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