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wastegate

2691 Views 11 Replies 5 Participants Last post by  trickydave
i have an 03 duramax with the california emissions. i had the egr blockoff done with a stock efi live tune. after this was put on im getting a loud whistling noise coming from the engine compartment. it only does it when im going up a hill or i get on it real hard. i was told that my wastegate was shit so my buddy tied it closed i believe. i was thinking that if its shut closed that when my boost peaks theres nowhere for it to go so its just trying to escape and makes that squeeling noise. do u have any insight on my problem
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well i took the hose off the wastegate and took it for a spin and it still made the noise. do u think i just need to buy a new wastegate
ok i never thought about that...i know there was a seal with the blockoff plate, maybe it is leaking there
ok ill try that, one more wuestion, my maf sensor is showing a code, i was having problems with my truck when efi live was turned on. i took it off the truck and runs great. my machanic said that sensor is the cause of all my problems, limped tranny, power loss, defueling. what do u think
ive cleaned it before and still shows. the code was showing the day i baught the truck when it was fully stock. when we put efi live on it didnt show any more and i forgot about it. so that why i was thinking it was bad
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