Best carbon fiber hood?
 

I want to buy a cf hood but i want a good one that will last also that will fit perfectly. What brand should i look for it?

Varis

Seibon

he said BEST.....

If you're looking for quality, Varis hoods and carbon parts are known for their fit and finish.

What kind of gain is their to a cf hood vs the stock aluminum?

Depends on how the hood is made.
Fiberglass or other product with a CF wrap is equal or more weight than a CF hood
Dry carbon hood is less weight but not a lot - I believe dry carbon hood is about 6-8 pounds

Now the other 'gains' from a CF hood can be the venting it provides versus a stock hood, different fitment (hood bulge) for aftermarket parts under the hood.

the weight reduction going to dry CF is minimal as the hood is already lightweight aluminum.

Beat me to it.

The Varis hood is vented, so you gain that advantage.

As far as weight savings goes:
Stock Z hood 10.0kg
Varis VSDC (Varis semi-dry carbon): 7.8kg

So you save about 5lbs between the OEM and the lightest offering from Varis.

They also make a standard wet carbon hood which only saves a couple pounds but still features the venting, as well as a full FRP hood that's about the same weight as stock.

So since weight is not the purpose, it is more about the shape for putting more mods on under the hood, plus some ventilation. This seems pretty specific. Did I get it correct?

Does cf need extra primer or no primer before painting?

Well a lot of CF hoods come with a clear-coat on them so you will have to prep them a certain way, which I am not sure how, though a lot of people do not paint CF hoods to 'show off' the hood.

CF hoods are just for looks unless of course you plan you shaving off every unnessary pound off the car. 5lb may not sound like much, but it does eventually add up when you're building a serious racer. If you plan on leaving a touring package, nav and all other creature comforts intact, I wouldn't worry too much about weight savings and focus more on which one has the best fit & finish. As with anything, you get what you pay for. Varis hood is pretty pricey. Over $2,400 if I'm not mistaken.

looks, no other reason. if you are honestly wanting to save 3-5 lbs, dont eat for a day or take out your spare tire for even mo go fastness

CF will get you the vents, which are about the only major functional aspects to replacing the hood.