[mlee]

Originally Posted by bobby35ny

Do you know if they plan on a TSB for the 17/18's mlee?

-Bobby

I kind of doubt it or someone would have posted it by now.

Originally Posted by ~Jb

So the "fix" the is claimed for the 19's has to be software? I ask because it does not appear any hardware has been changed from 18' to 19'?

All I can say is my car could not be any smoother from a dead stop taking off. Never had a single glitch there. Whether they tweaked the TB or tune, I have no idea, but this was a huge concern of mine when I decided to go with a 19 and very happy I don't have to deal with it.

[VinnAY]

No detectable problems here

[unavailablezl1]

I have dumped the clutch many times and have not had any bogging IF, IF I modulate the throttle correctly. Else, it will bog. So I know for me it is just learning. Going the other way on modulating, the tires just spin. So Bog, Correct, Spin are my three scenarios. Get it right and it is pure joy.

[VAZL1]

Originally Posted by regnouy37

Glad you got this off your chest

All in all, I think everyone knows that these are fantastic cars, and I think a lot people will look for ways to improve and sometimes even complain about a fantastic platform.

[Tony @ Mamo Motorsports]

Originally Posted by unavailablezl1

I have dumped the clutch many times and have not had any bogging IF, IF I modulate the throttle correctly. Else, it will bog.

So I know for me it is just learning. Going the other way on modulating, the tires just spin. So Bog, Correct, Spin are my three scenarios. Get it right and it is pure joy.

Try one of my ported TB's.....you will have like four or five scenarios to work with as the TB is much easier to modulate....no "learning" involved as the throttle will behave like it always should have.


Guys.....there is no software patch for a mechanical airflow issue with the TB....in out of the box trim it's a really poor design from the standpoint of properly metering airflow

It was an inexpensive TB that GM already had on their shelves for low performance truck applications that got the nod on your 6th Gen Camaros as well as 7th Gen Vette's....a total bean counter move by GM. This is a fact and honestly it is so poorly designed it shouldn't have even gotten the nod on truck engine putting out half the output of the what you guys are dealing with. Those who have seen these up close and personal with any clue of the physics involved in laminar airflow would agree I assure you.

The main issue is the huge lip or ridge around the entire perimeter of the throttle bore housing and the amount the throttle blade has to move to finally clear the ridge and uncover additional airflow so the engine can respond. That's the lag or bog your feeling.....your pushing on the pedal more but not much is happening. Sure....the blade is physically opening more and operating correctly but due to the poor shape of the housing bore it doesn't really uncover any additional air until it moves 10-15% more than it should and then it happens quickly so the throttle is not very easy to modulate.

That's one of the huge benefits of my ported TB.....the modulation of the throttle is improved in a huge way especially in the lower throttle positions.

The fact when its done the more streamlined shape flows 15% more air allows the engine to generate more power ad more torque.....another huge win fr modest dollars spent and 10 minutes of yuor time installing it.

For the guys that posted in this thread not thinking they have an issue, I will send you a TB and take it back on my dime (full refund including freight which I usually don't do) just to get your honest assessment of the product. I think you will be very surprised to feel what a properly shaped TB can do for you.

Make sure you take a long hard look at what the stock TB looks like before installing mine.....the light bulb in your head will go off immediately when you do.

You have nothing to lose and all to gain.....not too many performance shops offer you this type of scenario.....take advantage of it. You will love how much easier the car drives and how much more responsive it is with the modded TB. For the type of money we are discussing (under $400 shipped), it doesn't get any better.

Happy Holidays.....cant believe its 2019 in a few days!

-Tony
661-714-1317
www.mamomotorsports.com

[Agent K]

Originally Posted by Tony @ Mamo Motorsports

Try one of my ported TB's.....you will have like four or five scenarios to work with as the TB is much easier to modulate....no "learning" involved as the throttle will behave like it always should have.


Guys.....there is no software patch for a mechanical airflow issue with the TB....in out of the box trim it's a really poor design from the standpoint of properly metering airflow

It was an inexpensive TB that GM already had on their shelves for low performance truck applications that got the nod on your 6th Gen Camaros as well as 7th Gen Vette's....a total bean counter move by GM. This is a fact and honestly it is so poorly designed it shouldn't have even gotten the nod on truck engine putting out half the output of the what you guys are dealing with. Those who have seen these up close and personal with any clue of the physics involved in laminar airflow would agree I assure you.

The main issue is the huge lip or ridge around the entire perimeter of the throttle bore housing and the amount the throttle blade has to move to finally clear the ridge and uncover additional airflow so the engine can respond. That's the lag or bog your feeling.....your pushing on the pedal more but not much is happening. Sure....the blade is physically opening more and operating correctly but due to the poor shape of the housing bore it doesn't really uncover any additional air until it moves 10-15% more than it should and then it happens quickly so the throttle is not very easy to modulate.

That's one of the huge benefits of my ported TB.....the modulation of the throttle is improved in a huge way especially in the lower throttle positions.

The fact when its done the more streamlined shape flows 15% more air allows the engine to generate more power ad more torque.....another huge win fr modest dollars spent and 10 minutes of yuor time installing it.

For the guys that posted in this thread not thinking they have an issue, I will send you a TB and take it back on my dime (full refund including freight which I usually don't do) just to get your honest assessment of the product. I think you will be very surprised to feel what a properly shaped TB can do for you.

Make sure you take a long hard look at what the stock TB looks like before installing mine.....the light bulb in your head will go off immediately when you do.

You have nothing to lose and all to gain.....not too many performance shops offer you this type of scenario.....take advantage of it. You will love how much easier the car drives and how much more responsive it is with the modded TB. For the type of money we are discussing (under $400 shipped), it doesn't get any better.

Happy Holidays.....cant believe its 2019 in a few days!

-Tony
661-714-1317
www.mamomotorsports.com

Totally agree about the difference. It was the first and easiest mod. The throttle response is a whole lot better; I had to recalibrate my right foot

[Alain]

Originally Posted by Tony @ Mamo Motorsports

Try one of my ported TB's.....you will have like four or five scenarios to work with as the TB is much easier to modulate....no "learning" involved as the throttle will behave like it always should have.


Guys.....there is no software patch for a mechanical airflow issue with the TB....in out of the box trim it's a really poor design from the standpoint of properly metering airflow

It was an inexpensive TB that GM already had on their shelves for low performance truck applications that got the nod on your 6th Gen Camaros as well as 7th Gen Vette's....a total bean counter move by GM. This is a fact and honestly it is so poorly designed it shouldn't have even gotten the nod on truck engine putting out half the output of the what you guys are dealing with. Those who have seen these up close and personal with any clue of the physics involved in laminar airflow would agree I assure you.

The main issue is the huge lip or ridge around the entire perimeter of the throttle bore housing and the amount the throttle blade has to move to finally clear the ridge and uncover additional airflow so the engine can respond. That's the lag or bog your feeling.....your pushing on the pedal more but not much is happening. Sure....the blade is physically opening more and operating correctly but due to the poor shape of the housing bore it doesn't really uncover any additional air until it moves 10-15% more than it should and then it happens quickly so the throttle is not very easy to modulate.

That's one of the huge benefits of my ported TB.....the modulation of the throttle is improved in a huge way especially in the lower throttle positions.

The fact when its done the more streamlined shape flows 15% more air allows the engine to generate more power ad more torque.....another huge win fr modest dollars spent and 10 minutes of yuor time installing it.

For the guys that posted in this thread not thinking they have an issue, I will send you a TB and take it back on my dime (full refund including freight which I usually don't do) just to get your honest assessment of the product. I think you will be very surprised to feel what a properly shaped TB can do for you.

Make sure you take a long hard look at what the stock TB looks like before installing mine.....the light bulb in your head will go off immediately when you do.

You have nothing to lose and all to gain.....not too many performance shops offer you this type of scenario.....take advantage of it. You will love how much easier the car drives and how much more responsive it is with the modded TB. For the type of money we are discussing (under $400 shipped), it doesn't get any better.

Happy Holidays.....cant believe its 2019 in a few days!

-Tony
661-714-1317
www.mamomotorsports.com

Dude, you have to be one of the coolest business owners I’ve ever encountered. I bought a ported throttle body for my FIRST Zl1 1LE, the car got totalled a week later and you gladly refunded me my money without hesitation.

At the time I wasn’t sure if I was going to get another Zl1 1LE. Glad I was able to find another 2018 in the color I wanted.

Now you take the time to explain they why behind the bog on the throttle AND make this offer.

I wish my car didn’t have to be put away for the winter or I would take you up on this offer. Sucks living in the north east, I can’t wait to retire and get the hell out of here.

By the way, it’s incredible to me that some people don’t experience this bog/weird throttle response during daily driving. It’s impossible to miss.

[Alain]

Originally Posted by mlee

I kind of doubt it or someone would have posted it by now.

All I can say is my car could not be any smoother from a dead stop taking off. Never had a single glitch there. Whether they tweaked the TB or tune, I have no idea, but this was a huge concern of mine when I decided to go with a 19 and very happy I don't have to deal with it.

I wonder if there is any way we can examine a 2018 throttle body and the throttle body in your 2019 for differences in shape.

[Frisbey]

Originally Posted by unavailablezl1

I have dumped the clutch many times and have not had any bogging IF, IF I modulate the throttle correctly. Else, it will bog. So I know for me it is just learning. Going the other way on modulating, the tires just spin. So Bog, Correct, Spin are my three scenarios. Get it right and it is pure joy.

This is what I’ve learned as well.

If I start from an idle without adding a touch of throttle, it will bog,
Giving it just a touch of throttle, no bog, AT ALL

Works perfect for me.

This is much less of an issue for me than the clutch was on my 2013 RS/SS Camaro. That took a bit longer to master than the bog issue of the ZL1

The bottom line,
They were both great hot rods, no complaints at all.

[S.T.A.R.]

Tony, thank you , this issue was obvious when I brought the car home. My wife, who drag raced in the past, as well as my two sons who thought it was just an odd, searching type of feel, far from smooth.

After reading through this forum, I gave your TB a shot, to go with the green filter a week or so later...night and day difference on install Tony.

Merry Christmas!

[6spdhyperblue]

Tony can you explain how the untuned ecm responds to the different air curve per throttle position? What happens with the timing and why is there a limit to how much material is removed.

[devnull]

I've bought a few Mamo TB's (mostly on C7 corvettes). Tony is the real deal, and these suckers work well!

[mlee]

Originally Posted by Alain

I wonder if there is any way we can examine a 2018 throttle body and the throttle body in your 2019 for differences in shape.

...or part #. Certainly worth a look.

[Quicksilver64]

Tony,
I appreciate your explanation. Completely makes sense now. I have your TB (on top of a Roto Fab) and and am thrilled with it. No issues since installing, I get occasional traction control intervention but no bog on my 17 ZL1.
Thank you for the TB and the additional education.