Looks like we have more Throttle body tables to adjust for larger throttle bodies

[JANNETTYRACING]

I have long been messing the Throttle area on the GenV E92s with no notable changes.

When adding larger Throttle bodies the ECM will just pull timing to compensate for the added Area instead of closing the blade.

I updated my Beta today and see some new tables So Thank you Hptuners.

I will be testing these out to see how they work wondering if anyone else has used them to adjust for large Throttle bodies?

I hope that the ECM will recognize the actual Throttle Area, close the blade and maintain the Idle timing.

Yes I am well aware of tuning VVE and Hacking Torque Tables for a result, Not something I am on board with.

If the ECM knows the Throttle Area, the TQ Hacking goes away.

[DSteck]

You're welcome.

The original area value that was visible is not used for much.

[JANNETTYRACING]

You're welcome.

The original area value that was visible is not used for much.

Well Thank you Dave Steck.

I had a feeling you were involved.

If we can get it added to the 19 ZR1 that would be great for reference, we install 95mm TB on so many cars.

Had a great discussion with Greg Banish today, Thanks Greg!

I tested a single change today on my personal car and right away I could tell I had more chop from the cam due to less Idle air and more timing.

Love this stuff.

Now to find a way to model the Throttle percent to flow percent of total area for aftermarket TB, Talked with Nick Williams today as well.

Ted.

[DSteck]

The modeling involves some decently complex math unless you know exactly what DMRs are required.
I have it worked out to convert actual airflow into accurate throttle relation tables, but I’ll keep that one to myself.

Copying the throttle tables out of the ZR1 won’t do you much good. The throttle effective area vs percent relation along with effective area is a function of the overall air intake system and not just the throttle body. Copying the LT5 stuff into LT4 causes idle oscillations. Ask me how I know. ��

[Ben Charles]

Nice!! Look forward to playing with it!
Thanks

[TriPinTaZ]

Niceeeeee work, Dave! I actually never change throttle size as I pretty much found a bit of a "hack" in how I model airflow that seems to keep things happy. It will be interesting to play with the new tables.

[ETO_Eric]

Just in the knick of time. I'm working on a LT1 w/Whipple and KaTech 112mm TB. Was having a heck of a time with it. After playing with the main TP vs Airflow table, I was able to get it idling much better. I will report back later with more info.

[JANNETTYRACING]

The modeling involves some decently complex math unless you know exactly what DMRs are required.
I have it worked out to convert actual airflow into accurate throttle relation tables, but I’ll keep that one to myself.

Copying the throttle tables out of the ZR1 won’t do you much good. The throttle effective area vs percent relation along with effective area is a function of the overall air intake system and not just the throttle body. Copying the LT5 stuff into LT4 causes idle oscillations. Ask me how I know. ��

Yes Greg explained that to me with Emphasis on Effective.

I am not so much looking to copy them but use them as a reference as to direction of change.

You are an Engineer, I'm a Reverse Engineer LOL.

[Redline MS]

Teddy,

Saw Nick on Thursday at a Trade show in Charlotte and we spoke about that request. He says he might get on it...Kinda a pain in the ass but he was intrigued by it...lol

[JANNETTYRACING]

Teddy,

Saw Nick on Thursday at a Trade show in Charlotte and we spoke about that request. He says he might get on it...Kinda a pain in the ass but he was intrigued by it...lol

Thanks Howard.

[TriPinTaZ]

I tested these new tables on a client vehicle today with positive results. Hint, don't increase these tables by a ton and keep your changes smooth and uniform like you do with the MAF. Relatively small changes to the tables resulted in noticeable changes in the logs. They also had a direct effect on idle timing.

[JANNETTYRACING]

I tested these new tables on a client vehicle today with positive results. Hint, don't increase these tables by a ton and keep your changes smooth and uniform like you do with the MAF. Relatively small changes to the tables resulted in noticeable changes in the logs. They also had a direct effect on idle timing.

As expected based on the logic as I understand it.

[nicul15]

Any chance to adjust the column header instead? Maybe would like the change to extend to other tables that we don?t see?

[TriPinTaZ]

I dunno, I tried similar changes on another car and the car started surging. This is going to be a tricky table to learn but I'm sure we will figure it out over time. So far it seems like the LT4 cars are more sensitive to the changes vs the LT1 cars. But my sample pool is still very small.

[DSteck]

To be blunt, it's not going to be a guess and check scenario. You need to familiarize yourself with sonic airflow if you want to do it right.