I just finished doing HG and studs on my truck and have driven the truck yesterday afternoon and this morning. I have noticed a constant spool, even under low rpms its seem to be building up boost cause I can see it on my gauge. Never remember the truck doing it before usually with it being vgt itll cut out at low rpms right??
Turbo spool
- Thread starter Yuptown_lly
- Start date
I don't have a boost gauge but I can certainly hear it spooling at lower RPM and mine is on a factory tune.
Since you have a tune the parameters were likely set for it to spool sooner.
Since you have a tune the parameters were likely set for it to spool sooner.
Vgts can build boost at low rpms. How low are we talking though? Normally if there is a issue with the turbo it will be the be the other way and not build boost until 2000rpms.
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It comes and goes like a faulty sensor almost. Only changes I made were installed a fuel rail plug on the driver side rail and I tore off the insulation on the fire wall and didnt reinstall the turbo heatshield I'm just gonna wrap the a/c line. On the first test drive I did blow the passenger side intercooler pipe off at the lower boot but it shouldn't be leaking the truck makes 30 psi easily. When it does it theres a constant whistle, then from time to time itll just go away and get a drone like it normally does at low rpm and constant speed.
I believe a boost leak is the culprit, when it's making the constant spool noise and I let off I hear it blowing off over towards the passenger side under the hood. I will have to check the intercooler pipes and up pipes to see if they are leaking anywhere. Blowing the lower pass side intercooler pipe when I test drove it could have cut the boot I suppose, it's strange how it comes and goes though
