serious boost creep need help on how to fix
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Joined: Aug 2009
Posts: 262
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serious boost creep need help on how to fix
Hey guys i need some help here with my boost creep.
I have my tru boost set at 10psi and it is creeping to upwards of 16psi and i cant figure it out im going to go through everything again this weekend but info from knowledgable people will help. Here is my lis of mods and a link to a video of my truboost from low rpms in 2nd-4th.
Precision 5857 JB Turbo
Revhard Manifold
Stage 8 Locking Bolts
ARP Manifold Studs
Precision 750hp Intercooler w/ brackets & fasteners
2.25" Intercooler piping w/ 3" intake pipe
Tial 38mm Wastegate w/ 6psi spring
Rev Hard Dump Tube
Rev Hard 2.5" Downpipe
Synapse Blow Off Valve w/ Greddy Adapter Flange
Canton Oil Filter Relocation Kit w/ -10an Braided lines & fittings
Breather filter with hose
AEM Tru boost
AEM UEGO
Prosport Premium Oil Pressure Gauge 52mm
K&N filter
3" single megan echaust with ur testpipe
750cc rc injectors
255lph fuel pump
AEM EMS Version2
heres the video: http://www.youtube.com/watch?v=syLf-...ulJwyiYkr13bLs
I have my tru boost set at 10psi and it is creeping to upwards of 16psi and i cant figure it out im going to go through everything again this weekend but info from knowledgable people will help. Here is my lis of mods and a link to a video of my truboost from low rpms in 2nd-4th.
Precision 5857 JB Turbo
Revhard Manifold
Stage 8 Locking Bolts
ARP Manifold Studs
Precision 750hp Intercooler w/ brackets & fasteners
2.25" Intercooler piping w/ 3" intake pipe
Tial 38mm Wastegate w/ 6psi spring
Rev Hard Dump Tube
Rev Hard 2.5" Downpipe
Synapse Blow Off Valve w/ Greddy Adapter Flange
Canton Oil Filter Relocation Kit w/ -10an Braided lines & fittings
Breather filter with hose
AEM Tru boost
AEM UEGO
Prosport Premium Oil Pressure Gauge 52mm
K&N filter
3" single megan echaust with ur testpipe
750cc rc injectors
255lph fuel pump
AEM EMS Version2
heres the video: http://www.youtube.com/watch?v=syLf-...ulJwyiYkr13bLs
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Joined: Nov 2008
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Are you sure it just started happening? The revhard manifold and the 38mm is a perfect combo for boost creep. You probably want to log the car and see if knock control is on and retarding timing. Other then that, it very well could be a wastegate issue but those Tials are pretty reliable.
Thread Starter
Registered User
Joined: Aug 2009
Posts: 262
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it did had a little about a month ago but it only went to 11psi which can be normal with this setup, but i noticed it hitting 12 so i decided to step on it and the next thing i know it starts jumping to 15-16
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Joined: Oct 2007
Posts: 3,121
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From: Los angeles
my old rev hard log manifold with my tial 38mm gate have no boost creep what so ever. It held 9psi all the way to redline no problem
run a vaccum source straight from your intercooler pipe to the bottom of the wastegate port and see it it creeps on just the wastegate spring pressure. If it does not than your boost controller is messed up.
run a vaccum source straight from your intercooler pipe to the bottom of the wastegate port and see it it creeps on just the wastegate spring pressure. If it does not than your boost controller is messed up.
