accel
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- #1
I installed PP2. Positives were discussed N times, here's my negatives. GT350 intake in GT is afterthought for sure. It needed better adaptation.
- sucks hot air really quickly while staying in traffic. Really quickly, you can really see temp climbing up.
- I do not buy it when people say water is not getting in there. It is.
I got in a garage after rain, popped the hood and could feel moisture.
Hood extractor pours water in front of the filter right where incoming air comes.
Incoming air will blow it towards the filter.
- Underhood became noisier and not in a good way. I was surprised as I expected
engine sound to become better, but instead got more "huuummmm" aroung 2000 rpms.
I know there are posts at this forum where people essentially made hermetic
plastic cover on top of the intake. That is probably the best solution.
I have emission inspaction in my state that would essentially cancel carb advantage
if they see any modifications.
So I had to come up with solution that can be easily removed and return
intake back to oem look for smog check.
So I bought this puffy pipe thermal isolation hose from home depot and
it takes literally seconds to cut it to appropriate length and put on top/around
of the intake rubber thus extending its height increase and beter isolation.
This improved things somehow, but not much. Next day I opened the hood and
saw hood's imprint on the hose. It was telling me that there's still very
little contact with hood. Noise was also at the same level.
I removed hood liner previously and luckily still had it in garage. Bare GT hood
will not give you any good cover as you see at pictures.
I returned the hood liner back and it was much better - sound pretty much went
back to comfortable level. Temp difference outside air/intake air came back to
pre power pack installation level while driving. In traffic temperature is better,
but I wish it was even better.
So I solved unpleasant sound and extra heat, but needed a solution for water.
I basically inserted a self-made tray in between hood liner and head extractor.
It blocks air from being sucked from heat extractor into air intake. When water
gets into heat extractor it gets into tray and diverts outside air intake. I think I
will replace the tray with some sticky heat insulator.
This last solution lets heat extractor work as heat extractor, also diverts water
from air intake.
I will probably make some improvements to the system, but as a proof of concept
it worked. Of course I realize that part of my initial trouble was the fact that
I removed hood liner.
Without hood liner only sharp hood element leave imprint on the rubber
Final look
Hood surface without the liner is not good for pp2/3
Hood liner installed back. Here you can see a tray that I installed between hood lined and the hood. It blocks regular air path into the filter and instead diverts it towards front of the hood.
Hose from home depot.
View from top - previously I'd see air intake internals here, but now it is air/water diverting plate
Imprint hood without a liner leaver on rubber. Bottom right you can see two sharp edged of heat extractor and one of its screws.
- sucks hot air really quickly while staying in traffic. Really quickly, you can really see temp climbing up.
- I do not buy it when people say water is not getting in there. It is.
I got in a garage after rain, popped the hood and could feel moisture.
Hood extractor pours water in front of the filter right where incoming air comes.
Incoming air will blow it towards the filter.
- Underhood became noisier and not in a good way. I was surprised as I expected
engine sound to become better, but instead got more "huuummmm" aroung 2000 rpms.
I know there are posts at this forum where people essentially made hermetic
plastic cover on top of the intake. That is probably the best solution.
I have emission inspaction in my state that would essentially cancel carb advantage
if they see any modifications.
So I had to come up with solution that can be easily removed and return
intake back to oem look for smog check.
So I bought this puffy pipe thermal isolation hose from home depot and
it takes literally seconds to cut it to appropriate length and put on top/around
of the intake rubber thus extending its height increase and beter isolation.
This improved things somehow, but not much. Next day I opened the hood and
saw hood's imprint on the hose. It was telling me that there's still very
little contact with hood. Noise was also at the same level.
I removed hood liner previously and luckily still had it in garage. Bare GT hood
will not give you any good cover as you see at pictures.
I returned the hood liner back and it was much better - sound pretty much went
back to comfortable level. Temp difference outside air/intake air came back to
pre power pack installation level while driving. In traffic temperature is better,
but I wish it was even better.
So I solved unpleasant sound and extra heat, but needed a solution for water.
I basically inserted a self-made tray in between hood liner and head extractor.
It blocks air from being sucked from heat extractor into air intake. When water
gets into heat extractor it gets into tray and diverts outside air intake. I think I
will replace the tray with some sticky heat insulator.
This last solution lets heat extractor work as heat extractor, also diverts water
from air intake.
I will probably make some improvements to the system, but as a proof of concept
it worked. Of course I realize that part of my initial trouble was the fact that
I removed hood liner.
Without hood liner only sharp hood element leave imprint on the rubber
Final look
Hood surface without the liner is not good for pp2/3
Hood liner installed back. Here you can see a tray that I installed between hood lined and the hood. It blocks regular air path into the filter and instead diverts it towards front of the hood.
Hose from home depot.
View from top - previously I'd see air intake internals here, but now it is air/water diverting plate
Imprint hood without a liner leaver on rubber. Bottom right you can see two sharp edged of heat extractor and one of its screws.
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