If anyone can, that can be a cool mod car.

Mine doesn't crash, but it loads forever till you quit. Now its playing online (boring) and using the cracked one to enjoy the mods.

@IAmJFry, Unfortunately script folder doesn't do it. @JohnFromGWN I already tried all those, to the point of reinstalling the game, re-edit some previously modded dlc all in vain.
The logs got no errors or warnings. Though I'm sure it's the mods. So, I'll work on them slow by.

Appreciate the insights guys.

Thanks @IAmJFry Let me try withe scripts folder, since I had removed all the .dll and .asi on the main folder one by one, which did not work , unless the scriptHookV.dll, but without it the whole modding is kinda useless.

@IAmJFry
For map editor (ClearScript, MapEditor, NativeUI).dll, Engine_Braking.dll and Razielex's BreakLights System.dll

@IAmJFry
.dll
dinput, scriptHookV, scriptHookVDotNet2, scriptHookVDotNet3
.asi;
CustomGearRatios, DismembermentASI, Gears, GTAV.HeapAdjuster, InversePower, Menyoo, NFSgauge, NoBoundaryLimits, OpenIV, PackfileLimitAdjuster, ScriptHookVDotNet, TrainerV

When my car rolls upside down or lands sideways, I can't flip it back on wheels normally as we do. On air, shift and control keys can't balance the car. I use arrows keys for driving controls, so I thought it might be conflicting, so on in-game settings, I did reset the controls to default, no changes. Verified game data, no changes. Uninstalled the whole game, started a fresh, well, without mods, it works. So I narrowed down trynna find which mod was the culprit. Addons have no issue, in short, my mods folder doesn't affect anything.
I have reached a point where removing ScriptHookV.dll only (that is leaving the dinput8 and the scripthookv.net installed), the controls works.
I'm not a pro but I think something's up with my asi files, so I tried removing each one of the asi's I have and launch the game (with scripthookv present) but controls still not responding. So far the only solution is to remove scripthookv , and we know without it, game's boring. I have the latest release of scripthook (1.0.2628.2)

You are a lief-saver man. I have wasted time on the sound changes for a long time. I really appreciate. Thanks @a63nt-5m1th. Changing nameHash in dlc_patch works like a charm 😊

I have tried adding mod sounds to cars like Annis Elegy Retro Custom (mpimportexport), Dubsta 6x6 (mphipster) and Duke O' Death (mpsum) but the sound is still stock. I even tried editing the .awc files by exporting oac in openFormat but still no sound changes. Have no idea where I'm wrong. Any insight will be appreciated.

@RedBlue123 The normal Trainerv ( https://www.gta5-mods.com/scripts/simple-trainer-for-gtav) does the job pretty well. Once you toggle it, go to Vehicle optiions . Then there's an option Vehicle Load/ Save Menu.
So, you have to be in that particular car you want save, then after selection the Vehicle Load/ Save Menu, select the option, maybe Save slot 1 and it will save that vehicle, then if you want the vegicle, on the right side there's corresponding option Load slot 1 and it will spawn your car. The next car, save on slot to and so on, since if you use the same slot, it will overwrite the prior saved vehicle. And one tip, ensure you always backup your trainerv settings so that after an update, you don't need to start modding and saving cars. You just update the TrainerV.asi.