I never ran with a pull type BOV before, so I'm unsure as to how they work, but I've always read around that they tend to leak boost at higher pressure, I'm assuming from the intake charge forcing the piston up. This may not be an issue with the tial for the very same reasons you have posted...
Good call John ;).
I was thinking that he had the 550's fuel pressure set at the TSRM spec or close to it since he was having a rich running issue from what he described.
So, what makes a pull type BOV, such as the Tial, leak under high boost situations, versus a push type vavle, like the HKS SSQV or Synapse Synchronic not leaking at all due to the boost pressure pushing the valve closed under boost??
The difference would only be noticed if you had two exactly same motors/setup/driver characteristics.
One BOV on one car, one on the other.
The difference would be noticed by how long it takes one turbo to die due to compressor surge at high Psi levels versus the other running the same setup.
Jtamulis or Driftmotion, either way you will walk away with a lighter wallet and a quality piece that will leave a smile on your face for a long time. ;)
You need to take the timing belt off, then begin re-timing the motor to TDC for #1 piston per the TSRM specs, then you can put the belt back on.
BTW, you only need to take the belt off of the cam gears, not all the way back off ;).
Yeah, I couldn't tell a difference either, but what really got my attention were the videos of what a tial looks like when venting on a properly setup car/combo. It's actually very fast to vent for the size of the piston in the video, but at what cost? I bet that suby owner is using a light...
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