GrandSport223

Im thinking of putting on a bigger ported throttle body on my 17 GS. Just wondering has any one done this, and did you notice much of a difference? The K&N air filter charger kit I put on helped quite a bit. So I'm wondering if a bigger throttle body would help even more. Too big of the throttle body might hurt the bottem end and mid range tho.

Steve Garrett

I've got the WeaponX ported throttle body, which makes a huge difference. I know it's not exactly what you're asking about, but that was my fix.

I've also got a Halltech cold air intake....great combination.

08pacecar

I also installed a weapon x ported throttle body. I like how it feels

GrandSport223

How much is the weapon x? Can you buy that through GM or who makes that ?

Thanks Guys!

WarHammer619

Here ya go
https://weaponx-c7.myshopify.com/col...le-body-ported

GrandSport223

Thanks buddy! 😎
Thinks im going to get that!

Ben@WeaponX

thanks fellas

GrandSport223

Only thing that that sucks for me being in Canada, that little baby is going to be $500 bucks or more. Oh well..

FlatPlaneCrankDreams

Since you're already going to be digging in, an Edgyvette ported intake manifold would also be a great addition while retaining an OEM look.

GrandSport223

Thats not a bad idea. To bad tho I already got the chrome kit put on my OEM fuel rale.

WarHammer619

I second this !!!!!!!!!

GrandSport223

Hi Ben
i have a 2017 Grand Sport, motor completely stock other then the K&N cold air induction kit. How much extra horse power will the Weapon X throttle body give the car?

08pacecar

Should be around 7 to 10 hp.

tcinla

I thought ported throttle body's improved throttle response but didn't add HP, at least not w/o a tune and combined with some other form of induction change like a CAI. Is 7 HP noticeable by itself ?

08pacecar

No you can not tell.

GrandSport223

kind of a lot of money to spend on only an extra 7 to 10 hp . On the website it says 9 to 12 extra rear wheel horsepower is common.

Hillbilly65

Do you have to have the engine tuned for the weapon X throttle body?

08pacecar

You spend that on a cold air intake. You gain 35hp on headers. No you do not need a tune for a ported throttle body

WarHammer619

I am having my Intake Manifold and TB Ported not expecting any crazy increase on numbers. My car is supercharged so I am more interested in trying to increase airflow in as well as out.

Hillbilly65

Thanks for the info. I don't plan to do anything until the warranty is gone. After that who knows.