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Ive went over my intercooler boots and cant find a leak, how likely are intercoolers prone to leaking? the reason i ask is my egts seem a little high just cruising down the hwy (900-1200) but are low in town?(500-700)
 

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do a pressure test on the whole boost system. Defiantly the best way to figure out what's going on. It's pretty easy, just get a 4" rubber endcap for pvc or cpvc at a hardware store, cut a little hole in the middle and plumb in a regular valve stem (you can get that at a hardware store too) then just use a air compressor and pump up the system.
 
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