WTF is boost creep!?!?
It’s basically when the wastegate on a turbo car can’t flow enough air.
Causes are typically exhaust flowing too much air , coming in the form of downpipe upgrades or general exhaust upgrades.
Solutions include making the wastegate bigger (not advised), return exhaust to stock or putting in what is called a ‘restrictor ring’ to restrict the boost pressure to 1.2 bar or whatever.
Example here : http://www.envyperformance.com/index.cfm?fuseaction=product.display&Product_ID=2149&CFID=58951&CFTOKEN=33816903
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