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Question for Turbo guys on wastegate only

imrex613

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Just had a quick question for the turbo guys running boost off wastegate. How much boost are you actually seeing vs your spring? Right now I have a 6 psi spring but I see 5.58 max boost in my logs. I know it's a 6 psi spring and that's what it "should" make but in every other turbo car I've built normally the car makes more than the spring (IE 6 psi spring making 6.5-7.5). I do have a boost controller and can easy adjust it up higher but im just curious what others are seeing. I am running turbo guards instead of air filters and thought about pulling them to see if anything changes but im afraid of sucking debri in there. Thanks in advance!
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asylum938

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I have a boost controller on my hellion sleeper kit.

If I have the controller off and only running wastegate pressure on the 7lb spring I see about 5.5-6psi on the boost controller gauge.
 
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imrex613

imrex613

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I have a boost controller on my hellion sleeper kit.

If I have the controller off and only running wastegate pressure on the 7lb spring I see about 5.5-6psi on the boost controller gauge.
That's exactly what I wanted to hear I guess these cars just have that much back pressure. We are about the same so I need to just turn it up and not worry, lol. Thanks!
 

Stephen@lethal

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Usually you will see it slightly fluctuate from the spring by about a pound or less give or take. Wastegates do a pretty good job of keeping it under control.
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