Procedual material not applying correctly

Question

i have an issue i need to fix ASAP because is getting in the way of my work, i started modelling with Blender and i love it, specially Vehicle modeling, and i have an issue, i created procedual materials like Metal, glass, tinted glass, carbon fiber using nodes in blender without any textures, and the problem i have is that whe ni apply the material in the vehicle for expample the windows i'm not getting the result i should be getting but when i apply the material to a plane or monkey head it applyes correctly, i have a few Screenshots to show you guys what i'm talking about with hope you guys can hellp me understand what's the problem cuz i really can't find any solution to this...

here another example on my carbon fiber material that's different in both meshes but is the same exact material... i really need help with this. i may be a noob and this is an easy thing to solve but i really need help to figure it out...

PS: english is not my native lenguage and in the picture i wrote in spanish in red "mismo material" it means "same material" PS2: i'm rendering with experimental build GPU supported (Cycles)

Is there anything different about the texture coordinate mapped to the different sections? — Christopher Bennett, Jun 11 '20 at 19:13
Hello :). Consider sharing the file or part of it, so others can take a look. — jachym michal, Jun 11 '20 at 19:14
so you have this purple thing instead of a transparent glass, correct ? could be a UV mapping problem ? or you need to recompute normal ? — ker2x, Jun 11 '20 at 19:15
also, please consider using a title that describe your problem so it can be searched on google and help other peoples with the same problem :) — ker2x, Jun 11 '20 at 19:17
is not purple is blue and the carbon fiber has the same problem as the glass, i not using any UV's it's all procedual but why does it work win a plane and not in my model.
How can i share the .Blend file if that helps — Vinicius Trindade, Jun 11 '20 at 19:22
@JachymMichal also the auto smooth is turned off, just checked — Vinicius Trindade, Jun 11 '20 at 19:27
To share your file use GDrive/Dropbox or our local Blend-exchange site if the file is small enough :). — jachym michal, Jun 11 '20 at 19:29
@JachymMichal check if ur able to download the file
https://www.dropbox.com/home/LamborghiniModel?preview=lamborghiniaventador9.blend — Vinicius Trindade, Jun 11 '20 at 19:41
also here just in case is a problem with dropbox
https://drive.google.com/file/d/14hMiLheRcF-1EPrItxQEED0qpgHoMq0d/view?usp=sharing — Vinicius Trindade, Jun 11 '20 at 19:50
Hello :). I checked the file, you need to recalculate normals for the material to work properly. — jachym michal, Jun 11 '20 at 20:24
@JachymMichal it did! all this time i was recalculating the insides! not the outside normals, thanks a lot! — Vinicius Trindade, Jun 11 '20 at 20:50

Procedual material not applying correctly

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