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Today at Atelier Kaz - Private NSX Enthusiast, ex-Honda R&D engineer with F1, Indy/CART background

Eng Refresh, Health Check, etc 25

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Before/after of cleaning the intake manifold entry.
It was that dirty....




Same story for the TH body. DBW software was doing really good job in keeping the steady idle rpm even with so much dirt.....








I normally use Eng dressing spray from Meguiars as it keeps the engine bay very clean for a long time but I believe the owner is the fan of 303 products so decided to use it instead.

One of the reason why I prefer the one from Meguiars is that I don't need to wipe off the excess completely dry whereas with the 303 Aerospace Protectant, you must wipe it off completely dry to get best result.
Takes more time and I prefer using it on the door weatherstrip than on the engine.
Still nice product as it doesn't leave sticky surface like silicone compound.

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