2015 Z51 A8 with following mods

AFE intake
American Racing longtube headers with highflow cars
160 stat
ECS dyno tune

Car made 423rwhp

I was thinking of adding the weaponX ported throttle body just to have all the bolt ons but didn't know if it was worth it for my N/A car. Also if I did purchase it would it require a tune again?? Thanks

 

a ported throttle body is good for better/quicker throttle response... it is not a mod for hp/tq gains.. but it definitely helps with throttle response.. have one on my 2014 LS3...

 

He has your hand held so he could just turn up the driver demand tables since it's a C7.

 

Ahh ok then I'll just hold off. I have the power bug already Doug I'll be seeing you soon

 

I'd rather have real throttle response than electronically amplified aka artificial

I have the WeaponX ported throttle body and am happy with the purchase. I installed it at the same time as my AFE intake so it's tough to say what did what, but sound, throttle response, and SOTP feel were all improved.

 

hey Chris, sorry about yesterday. If you were still interested you can try pay pal again. It may work now.

 

The throttle response is not artificially amplified, the tables in the tune allow you to adjust the TB blade to be closer to the movement of the gas pedal rather than "artificially dampened" like the stock tune/calibration. You have it backwards.

 

I never said anything about the linearity of the programming.

 

I understood that with A tune that will take care of lack of throttle response.If that's the case
I don't see why you would need the throttle body.

 

Your assumptions are a contradiction what is actually going on with the stock programming. You state "I'd rather have real throttle response than electronically amplified aka artificial". Not sure what you consider real because the stock TB with stock programming "dampens" throttle blade opening speed electronically aka "artificially" on any TB bolted in place. Stock ECU programming dampens the speed at which the blade opens whether it's a Weapon X product, brand X or factory untouched unit. The Diablosport tuners allow you to boost or "regain" some of the speed at which the blade opens, up to 20% I believe. Even with this +20% from what I've read in the Tech Section your throttle response is not linear with the pedal movement. If you're happy with the Weapon X ported throttle body you'd have additional satisfaction with the "throttle booster" (or whatever DiabloSport has named this feature) in combination with the Weapon X TB.

Chuck at Corvettes Of WestChester has been doing a mod somewhat similar to this on C6's with custom programming of factory ECU and some sort of piggyback unit. I've read more than a few testimonials of Chuck's customers raving about his COW BOOSTER.

COW BOOSTER

There is a device called The Sprint Booster which addresses the same lack of response issue, it has has been around at least since 2009 and has many vehicle applications and addresses this issue although apparently not as smooth as the COW BOOSTER or DiabloSport.

Sprint Booster

 

I have your same setup with the exception of E85. I put down 472whp

I just added a Ported TB yesterday, and plan to tune and dyno to see the gains. I can already feel a different and I have not even tuned the car for the part yet. I would say "YES", it's worth it

 

NO VEHICLE should use a ported throttle body. Cost is too high for the 1 HP you might gain and

absolutely NOT WORTH the potential for idle trouble and calibration headaches.

The bore is NOT shaped the way it is cause GM is lazy or cheap. Every little attribute of the TB bore is

done on purpose. While (without using names) there are some very nicely done throttle bodies on the forum,

they still make nearly NO gains for what's involved and what they cost.

On that note, MOST of the ported throttle bodies I've run across look like scenes for horror movies

like "Texas Throttle Body Chain Saw MASSACRE" and such.... Terrible, shameless, attempts at "porting" and

thinning of the blade and other butchery.

Stay FAR FAR away.....

While I have not played with C7 ported TBs.... from what I know of how those cars are calibrated, I would think

the C7 would respond poorly to TB porting.

As Doug says, there are tables you can mess with that will give you what you need without wasting money and

resorting to Throttle Body Homicide.

C7 is very interesting in that you can be at 100 KPA intake pressure (zero vacuum) without the throttle

opening 100%..... Given that, there is NO potential for gains with a modified throttle body.

Additionally, you could inherit other drive-ability and tuning problems besides idle....

NO NO NO...
Chuck CoW

 

Not sure I agree with that Chuck. I do have a ported TB (WeaponX) on my C7 and have not noticed any adverse effects like bad idle, etc. I have had bad idle before on one LSx application (a truck) but typically good experiences overall.

Yes, there is a wrong way to do it, a buyer must choose correctly.

Yes, a throttle body can be a restriction, especially on a boosted application. I don't think I would tell people to run out and make it their first, or even third, modification, though. People do it because they are comparatively cheap and easy to swap.

They don't make a lot of dyno power (WOT) but they do help part throttle situations. Driver Demand is also not necessarily a replacement, either. Yes, you can open the throttle faster with DD tables but it also affects other things in the tune because you are commanding a torque level, not commanding a throttle opening angle so be careful with that.

 

I feel like I just stepped into a paid infomercial lol

 

A ported TB adds response and a few like Ben's will add some power at some points in the curve, it's been proven on dyno. However, the dampened effect on the TB and acceleration are put in by factory...fact, so if you like the ported TB it still has the dampened programming and you'll get an extra measure of throttle response with the DiabloSport or custom tune. The Diablosport adds to throttle response by allowing you to take some of the damping effect back, look at the many C7 owners that posted very satisfied reviews on this aspect. I'm not saying the throttle booster adds power, merely throttle response. Tuning the other parameters adds power. Debate all day long but the facts are what they are. I'm not in anyone's camp or team, just an avid Corvette performance enthusiast that enjoys continuous improvement.

 

Chuck you say that with such enthusiasm, but I happen to generally agree.

 

As I said..... It's not automatic that you inherit "problems" with ported throttle bodies, but the potential is there.

Depending on the mods you have and the air consumption of the motor, the ecm will idle the motor

with the blade in one position or another. Because "porting" is not a standardized procedure and everyone does it differently,

different combinations and different tunes will have more or less potential to have idle and cruise problems.

The message that I wanted to send was that (especially on an NA motor) there is negligible gains to be had

and when you consider the cost and effort along with the potential for idle problems, It's just NOT worth it.

Some vendors do an AMAZING job on the porting, and some vendors destroy every good TB they touch.

But, that said.... workmanship is one thing, but you can't judge performance gains by how polished and smooth the bore is.

I have thrown 50 ported TBs in the garbage and refused to tune many vehicles that came in here with them.

I won't waste my time or yours.
Chuck CoW

 

You and I seem to agree more and more lately.... And how is that we have both developed a tolerance for Butch???

So far Dougie, I owe you one ice cream from the last time we agreed on something and the next time

I see you, maybe we'll upgrade your prize to 2 beers!

See you soon.
Chuck

 

The only one who got away with calling me "Dougie" was my late uncle, I'm not big on ice cream and I don't drink beer. Got it Chuckles?

 

Make sure you get one of those tornado things for your air intake when you go to the ported tb