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Specially designed to help avoid the dreaded boost creep issue
Gear compensations for spark
Brushed Stainless Wiring Cover Plate
you'll find the name stamped right on the end
so to obtain maximum cam lift based on our measurements you need to add the valve clearance
TB Developments 4efte Uprated Valve Springs Celica-GT4 Specially designed to help avoidProduct Description We custom designed these valve springs for the 4e 5e engine platform to combat valve float often encountered in engines running a higher than standard RPM or higher boost levels which force the valves open when in a closed position resulting in a loss in power, valve flutter, miss fire and massively increasing the risk of detonation knocking pinking. The valve spring in OEM form is very soft for its applications, even in comparison
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