After questioning the forum re: replacing the throttle body on my 2016 convertible with z/51 package, I decided to replace it.
I went with the BBK 95 MM throttle body.
I am getting a noticeable power increase from 2500-5500 RPM

 

Hmmm

 

Had a Katech on my 16 z51. Are you sure it's power and not better throttle response you're feeling?

 

One tends to experience whatever is expected.

 

I tried that exact logic with my wife

 

Typical LS ported throttle body applications are good for a few hp..

 

Sure, I agree. But 2-5hp you can feel?

 

Well, with the [increased] throttle response and < 10 hp increase, it's been known to feel faster

 

Yeah not likely at all. Also, you should tune for a 95mm TB because you will get very odd throttle and idle behavior.

 

Hey, to each his own. If people “feel it”, let them enjoy.

 

undocumented seat of the pants power gain numbers are increased by the amount of money you spend on a mod.
Here is a true story:
True story from 15 years ago here on the C5 Corvette forum..Everyone was buying the Granatelli TB for their C5. It was the latest thing out there.. True to form, everyone who bought one came and posted WOW.. unbelievable etc.. more and more people bought into the hype until the first few actual before and after dyno results were in.. people where losing 8 to 10 hp with documented before and after dyno results. But people where still saying WOW.... 6 months in .. a representative from Granatelli came to the forum and said there was a manufacturing defect and indeed, they were not what they claimed and they causes a lose of power.. The Granatelli rep said anyone who bought one with a proof of purchase would get a call tag and a full refund, or a New improved model. He provided all of the links to get the refund.

My Point is that anyone who buys a Mod already presupposes its worth the money.. Ive found that in some cases, the use of the WOW word is the kiss of death. another would be the throttle bypass kit...
Just some insight
Bill aka ET

 

Kind of harsh fellas, I'm sure the gain in throttle response was worth it by itself..

Another anecdote, back in the day of ls1tech, there was a guy named 'Shaner' that hand-ported TB's for the LS1. There were many dyno tests from users wondering if there was indeed power to be had. In fact, it was shown to gain 7-9 rwhp on an otherwise stock setup! That's more than 10 bhp..

I realize different engine, different configuration, but don't exclude the gains from this modification..

 

I was just saying that seat of the paints with vested interest is self serving ... whether or not its worth the money should not be determined by seat of the pants. ( that was the point to my above statement.. ) it had no baring on this mod other than its undocumented, and I would neve believe the hype or performance gains of any manufacturer. I pointed out the throttle body bypass and the manufacturer of the kit ( 20dollars ) said 8 to 10 hp gain. that 20 dollar kit could be put together at home depot for 6 dollars. I'm pointing out things in general. This particular mod could be great but without real data, it could be another Granatelli.... I said could be.

 

I have had a ktech and Mamo throttle bodies on a couple different cars (Both A8 and M7) and I couldnt tell any difference on either.

 

I had one on my Camaro and I never felt any difference either. I think the ECM compensates for any true airflow improvements.

 

I doubt anyone could tell by the seat of the pants, if they had a full tank or an empty tank..yet the fuel weight is 110 lbs, or could feel the difference in performance with or without a passenger without real data. There is something to be said about seat of the pants, and sensation.. but no one is going to actually feel ( in the seat of their pants ) the amount of fuel left in their tank.

 

Pretty sure it is power.
However, I put the throttle body in on a warm day in the northeast winter.
The weather still has not broken here so I do not have a lot of seat time (Less that 2 hours) as it has been cold and raining.
Let alone the corona issue.
I will report after more time in the seat.

 

You can in a Miata. Trust me. In a Corvette, nope.

 

I first installed the Tony Mamo ported polished throttle body and recently installed the Soler throttle controller and with both installed the throttle response is insane !!

 

We usually get as many of the competitors TB's we can and test them on the flow bench, not the case with this TB the OP is talking about. I believe this is a 92mm and not 95mm, that is probably why it doesn't need tuning. Maybe the OP can verify.

Having said that, and w/o any data to back it up in this specific case, we can tell you that there is no difference between better response and more power. Having identical pedal maps, a better response is the result of more air or more power for a given amount of throttle. More air -> more power -> more torque -> more acceleration -> feels as better response, as simple as that. They are the same thing.

Test results indicate that up to 50% throttle that amount of air/power is dependent mainly on the throttle body (main restriction, sets flow rate) while at more than 50% throttle the flow rate starts to depend on other components, as it approaches WOT is mostly dependent on the whole system and this is where other mods help. Yes, very difficult to feel it at WOT, but the OP says it is at 50% TP where the difference is felt.

Here are some measurements on our 95mm (100mm Eff.) Throttle Body. What the OP claims with this particular brand and what many of our customers feel is the blue area, which of course, will be different depending on TB brand and size. This is our way to put numbers on the response, it is definitely there and it is the size of an "elephant". Not placebo, so many people can't be wrong.


Thanks,