Boost issue
Thread Starter
Instructor
Joined: Dec 2010
Posts: 111
Likes: 4
From: nj
Boost issue
Hey guys wanted some Input. Just finished install of A&A Ttrim setup on ls7. I'm running 3.8 pulley with stock balancer. Just got call from Tuner sayin issue with boost. First 2 pull made 6.3ish of boost at 5400 and stayed there. He checked belt and was tight so next pull made 9lbs of boost so decided to keep tuning so next pull back down to 6lbs. Hes going to check for leaks anyone have any input or suggestions? Ty
Racer
Joined: Oct 2018
Posts: 463
Likes: 154
From: ATX
Hey guys wanted some Input. Just finished install of A&A Ttrim setup on ls7. I'm running 3.8 pulley with stock balancer. Just got call from Tuner sayin issue with boost. First 2 pull made 6.3ish of boost at 5400 and stayed there. He checked belt and was tight so next pull made 9lbs of boost so decided to keep tuning so next pull back down to 6lbs. Hes going to check for leaks anyone have any input or suggestions? Ty
Common issues when loosing boost
*a leak at the couplers
*belt slip
*hose to the BOV has a kink or vacuum source
*the BOV is too small for the power level/boost
Last edited by PSSSSSHC6; Nov 9, 2023 at 11:15 AM.
Thread Starter
Instructor
Joined: Dec 2010
Posts: 111
Likes: 4
From: nj
Currently running turbo smart 50mm bov so should be enough. Tuner was pulling off dyno to look over some things. Only other issue I could think of is maybe msd intake needs to be tighten again. Had oil passing through intake and getting pass the seals running down the passenger front head. Block off pcv ports and vented to atmosphere. Figured if oil can pass why not boost.
Racer
Joined: Oct 2018
Posts: 463
Likes: 154
From: ATX
Currently running turbo smart 50mm bov so should be enough. Tuner was pulling off dyno to look over some things. Only other issue I could think of is maybe msd intake needs to be tighten again. Had oil passing through intake and getting pass the seals running down the passenger front head. Block off pcv ports and vented to atmosphere. Figured if oil can pass why not boost.
Thread Starter
Instructor
Joined: Dec 2010
Posts: 111
Likes: 4
From: nj
Tuner emailed yesterday saying thinks it was the belt tensioner so hopefully I'll be getting some good news between today and tmrw. Ill be adding catch can when I get car back.
Platinum Supporting Vendor
Joined: Jul 2011
Posts: 2,076
Likes: 225
Make sure he watches this.
Here is tech video for adjusting the billet tensioner.
https://fb.watch/eHVi-zPeBD/
Here is tech video for adjusting the billet tensioner.
https://fb.watch/eHVi-zPeBD/
Thread Starter
Instructor
Joined: Dec 2010
Posts: 111
Likes: 4
From: nj
Make sure he watches this.
Here is tech video for adjusting the billet tensioner.
https://fb.watch/eHVi-zPeBD/
Here is tech video for adjusting the billet tensioner.
https://fb.watch/eHVi-zPeBD/
Safety Car
Joined: Oct 2007
Posts: 4,196
Likes: 1,072
From: South Florida
You must pressure test forced induction applications from the compressor cover through to intake manifold
The crankcase should never vent to atmosphere this will lead to oil accumulating in baffles, rings, and oil pushed out of the engine oil seals.
The crankcase should never vent to atmosphere this will lead to oil accumulating in baffles, rings, and oil pushed out of the engine oil seals.
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Thread Starter
Instructor
Joined: Dec 2010
Posts: 111
Likes: 4
From: nj
Make sure he watches this.
Here is tech video for adjusting the billet tensioner.
https://fb.watch/eHVi-zPeBD/
Here is tech video for adjusting the billet tensioner.
https://fb.watch/eHVi-zPeBD/