Ms4 idle vacuum ?
Ms4 idle vacuum ? Ok folks I have a 07 lq4 with ls6 heads and a ms4 cam..I currently only have a mail order tune.
The idle is set at 850rpm
But it only pulls 9lbs of vacuum or 62kpa
Is this normal.
The vacuum stays steady
And I check for vacuum leaks
Would a dyno tune help with the low vacuum
The idle is set at 850rpm
But it only pulls 9lbs of vacuum or 62kpa
Is this normal.
The vacuum stays steady
And I check for vacuum leaks
Would a dyno tune help with the low vacuum
Teching In
Joined: May 2009
Posts: 10
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Years ago I knew a guy running 240Zs in SCCA competition, and he used a vac reservoir to keep the power brakes happy.
If that is the only reason to run more vacuum, why not just convert to manual brakes? Much simpler, and no reliance on engine vac, which will be a greater problem if you start using a more aggressive cam, etc.
Or use a hydroboost setup.
If that is the only reason to run more vacuum, why not just convert to manual brakes? Much simpler, and no reliance on engine vac, which will be a greater problem if you start using a more aggressive cam, etc.
Or use a hydroboost setup.
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Years ago I knew a guy running 240Zs in SCCA competition, and he used a vac reservoir to keep the power brakes happy.
If that is the only reason to run more vacuum, why not just convert to manual brakes? Much simpler, and no reliance on engine vac, which will be a greater problem if you start using a more aggressive cam, etc.
Or use a hydroboost setup.
If that is the only reason to run more vacuum, why not just convert to manual brakes? Much simpler, and no reliance on engine vac, which will be a greater problem if you start using a more aggressive cam, etc.
Or use a hydroboost setup.
Since I already have invested a good amount of money upgrade my brake setup
I guess I'll just look into a vacuum Reservoir
Thanks for the help guys
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