Throttle body upgrade

[Woodybangs]

Anyone using a larger throttle body? Maybe one off of the 4.2 V8's?

[will13k7]

the Magnuson's "stage3" kit uses a larger throttle body, non audi part, but oem, forgot which.

[jimrobbington]

I thought it was from a Hemi

[Woodybangs]

I hate to beat this down, but coming from an E55 this seems like it can make some power for our platform. Dual pulley guys should start looking into this.

[s4matty]

Unfortunately it is not just a plug and play.There is some wire changes that have to be done (minor) and some software changes also.I had the hemi TB a while back and the car would not start unless I had gas padal 1/2 throttle to start.I drive the car for 2 min and it went in limp mode.
I just picked up the TB off a 02 BMW 540 it's the same size but different voltages than the hemi so hoping for the best

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[whiped]

Unfortunately it is not just a plug and play.There is some wire changes that have to be done (minor) and some software changes also.I had the hemi TB a while back and the car would not start unless I had gas padal 1/2 throttle to start.I drive the car for 2 min and it went in limp mode.
I just picked up the TB off a 02 BMW 540 it's the same size but different voltages than the hemi so hoping for the best

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One of these days you need to make a build thread and just post pictures of all the crazy things you are doing!

[OnEaNgRyBuNnY]

Unfortunately it is not just a plug and play.There is some wire changes that have to be done (minor) and some software changes also.I had the hemi TB a while back and the car would not start unless I had gas padal 1/2 throttle to start.I drive the car for 2 min and it went in limp mode.
I just picked up the TB off a 02 BMW 540 it's the same size but different voltages than the hemi so hoping for the best

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^ This.

The ecu has to be re-calibrated. Even if the signal is compatible, at any given % of TB postion, the airflow will be very different. I can certainly see more gains on an application such as this where the TB is having air sucked through it by the SC vs being blown through, such as by a turbo, where there are usually lesser gains to be had. If we had a software such as Maestro, this wouldn't be a problem to work out. Then again, neither would the dual pulley. Maybe this is another job for EPL??

[s4matty]

Ya I'm really considering jumping to epl
I love my apr tune but as far as custom stuff they don't want to work with me! I have reached out a few times with no response.
Maybe they will start to offer such things in the future?

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[mrmomo313]

Ya I'm really considering jumping to epl
I love my apr tune but as far as custom stuff they don't want to work with me! I have reached out a few times with no response.
Maybe they will start to offer such things in the future?

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I'd wait until we see an EPL car put up a time like Loe's. Until I see that, I'm not convinced their** tune is better than what Loe has going at the moment.

But I do agree with whiped, you should make a thread for your s4 and post up all the cool stuff you're doing.


edit: the typo was bothering me too much lol

[OnEaNgRyBuNnY]

I'd wait until we see an EPL car put up a time like Loe's. Until I see that, I'm not convinced they're tune is better than what Loe has going at the moment.

But I do agree with whiped, you should make a thread for your s4 and post up all the cool stuff you're doing.

I agree 100%. I'm seeing no results and hearing no numbers from EPL, just anecdotal butt dynos. I like the passion and approach EPL is showing towards the platform, but if i can run an 11.700 on APR 93 off the shelf v3.1 stg 2 tune running 93 oct with a dual pulley and Loe is running 11.2xx on a race file and CW, and EPL silent on 1/4 stats, where is the incentive for me to switch, especially at full retail? I'm not going to throw that kind of money at something unproven when I can get the same, or better, results for less.

[s4matty]

I'm just thinking that some of us have very different set up/mods
And custom tuning for them can go along way.Not saying epl is the solution,but he seems to do a lot of custom tuning..I'm also running the CW with the apr and have really good results at the track with 104 tune and 91 pump with water/meth
But I want more! Lol

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[OnEaNgRyBuNnY]

I agree 100%. And EPL is a start if not ending up to be the solution for at least trying to progress in area where tuning would be required.


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[Loe]

I agree 100%. I'm seeing no results and hearing no numbers from EPL, just anecdotal butt dynos. I like the passion and approach EPL is showing towards the platform, but if i can run an 11.700 on APR 93 off the shelf v3.1 stg 2 tune running 93 oct with a dual pulley and Loe is running 11.2xx on a race file and CW, and EPL silent on 1/4 stats, where is the incentive for me to switch, especially at full retail? I'm not going to throw that kind of money at something unproven when I can get the same, or better, results for less.

It will be a tight race for sure this fall with all of the pulley options out there. It will also be confusing keeping up with the s/c + o/d or just o/d ratio's that I think someone should keep a spreadsheet of all of the combinations to help others make a choice. You'll be hitting more 93 pump records in no time (well, also because you seem to be the only one who posted a full 1/4mile time on this octane and DP ).

I think Matt will have the solution I have been craving for soon

[OnEaNgRyBuNnY]

It will be a tight race for sure this fall with all of the pulley options out there. It will also be confusing keeping up with the s/c + o/d or just o/d ratio's that I think someone should keep a spreadsheet of all of the combinations to help others make a choice. You'll be hitting more 93 pump records in no time (well, also because you seem to be the only one who posted a full 1/4mile time on this octane and DP ).

I think Matt will have the solution I have been craving for soon

Yeah, there's no secret and nothing special to what I'm doing. I'm just putting the time in at a track that's at all but sea level and hitting it on days with excellent conditions and reporting back. It would be nice if we could get a few more doing the same and get a nice pool of data. A dedicated thread and spreadsheet isn't a bad idea, either. Now who's this Matt?


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[Thurston]

One of these days you need to make a build thread and just post pictures of all the crazy things you are doing!

agreed.

[BlownOne]

It will be a tight race for sure this fall with all of the pulley options out there. It will also be confusing keeping up with the s/c + o/d or just o/d ratio's that I think someone should keep a spreadsheet of all of the combinations to help others make a choice. You'll be hitting more 93 pump records in no time (well, also because you seem to be the only one who posted a full 1/4mile time on this octane and DP ).

I think Matt will have the solution I have been craving for soon

I think you are 100% right and this fall you, Matt and I wil be fighting for not only the first, but the lowest 10 second pass! And it seems like we are all running different tunes...apr, giac and 034. Oh and I have the solution you need right here lol. I'll be posting about it tonight 😎

[OnEaNgRyBuNnY]

I think you are 100% right and this fall you, Matt and I wil be fighting for not only the first, but the lowest 10 second pass! And it seems like we are all running different tunes...apr, giac and 034. Oh and I have the solution you need right here lol. I'll be posting about it tonight 😎

What a tease....

[Loe]

I think you are 100% right and this fall you, Matt and I wil be fighting for not only the first, but the lowest 10 second pass! And it seems like we are all running different tunes...apr, giac and 034. Oh and I have the solution you need right here lol. I'll be posting about it tonight 😎

Can't wait for the solution on your side!

[whiped]

It will be a tight race for sure this fall with all of the pulley options out there. It will also be confusing keeping up with the s/c + o/d or just o/d ratio's that I think someone should keep a spreadsheet of all of the combinations to help others make a choice. You'll be hitting more 93 pump records in no time (well, also because you seem to be the only one who posted a full 1/4mile time on this octane and DP ).

Someone posted a table with a bunch of ratios about a month ago. I wasn't able to find it doing some quick searching.

I will see if I can compile some numbers and get back to you.

[s4matty]

I will post a table with them tonight if nobody has by then..

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[whiped]

Looks like here is an old one:
http://www.audizine.com/forum/showth...iciency-thread

Here is a quick list of what I found for SC pulleys:

STOCK - 63.25 mm
Unitronic - 58.30 mm
APR - 57.75 mm
Revo - 57.65 mm
GIAC/AWE - 57.55 mm
KAVS - 57.50 mm
SRM - 57.45 mm
CTS - 57.02 mm

Probably a few I am missing but, oh well.

[OnEaNgRyBuNnY]

Looks like here is an old one:
http://www.audizine.com/forum/showth...iciency-thread

Here is a quick list of what I found for SC pulleys:

STOCK - 63.25 mm
Unitronic - 58.30 mm
APR - 57.75 mm
Revo - 57.65 mm
GIAC/AWE - 57.55 mm
KAVS - 57.50 mm
SRM - 57.45 mm
CTS - 57.02 mm

Probably a few I am missing but, oh well.

Thanks! Excellent link.


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[whiped]

Thanks! Excellent link.


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No problem, the table is a bit dated though especially with FluidAmprs/iABED'S latest offerings of larger crank pulleys.

Quick table for those

Crank Pulleys:

Stock - 162.18 mm
JHM - 179 mm
GMG - 180 mm
Fluidampr/iABED - 175+ mm

From the table in the above post:

Stock B8.5 DSG peaks at 6,400 RPM at the crank
Stock B8 DSG peaks at 7,000 RPM
TCU tunes peaks at 7,200 RPM (Might change based off the tune)

The SC is supposedly rated for up to 24,000 RPM

You can do the math yourself to figure out exactly what setup you want.

CRANK/SC * RPM@crank

---

For example, the classic dual pulley:

JHM Crank: 179 mm
SC: 57-58 mm
TCU Tune: 7,200 RPM

179/57 * 7200 = ~22,200 - 22,600 RPM for the SC

Personally, I am leaning more this route when I go stage 2:

Fluidampr Crank: 206 mm
Stock SC: 63.25
TCU Tune: 7,200 RPM

206/63.25 * 7200 = ~23,450 RPM

A few have mentioned wanting the following setup:

Fluidampr Crank: 189mm
CTS sc: 57mm
TCU Tune: 7,200 RPM

189/57 * 7200 = ~23,900 RPM

In the end, a used SC for our cars can be picked up for $800 or so and are easy to swap out. Thus, I am sure someone will blow one up at some point testing the limits

[cspcrx]

Great info, but if one goes does it crap parts in to the motor?

[whiped]

Great info, but if one goes does it crap parts in to the motor?

It's possible but, I don't think we have enough data yet. (Which isn't necessarily a bad thing)

I wonder what would happen in the event that it was over-spun or over-heated.

Looking at the tear down thread here: http://www.audizine.com/forum/showth...arger-Teardown

Most the moving parts are no where near any of the engine inlets but, I'm sure they could find a way there.

Hopefully someone far more knowledgeable than me can properly answer

[OnEaNgRyBuNnY]

It's possible but, I don't think we have enough data yet. (Which isn't necessarily a bad thing)

I wonder what would happen in the event that it was over-spun or over-heated.

Looking at the tear down thread here: http://www.audizine.com/forum/showth...arger-Teardown

Most the moving parts are no where near any of the engine inlets but, I'm sure they could find a way there.

Hopefully someone far more knowledgeable than me can properly answer

It's POSSIBLE, for sure, but I'd be more worried about an intercooler grenadining and causing an issue to the motor. Otherwise, it looks like the intercoolers may actually protect the engine from smaller bits and unless there was a large hole in the IC's, I doubt enough fluid would enter the cylinders to cause hydro locking or bend a rod but it's all possible. I really doubt the SC would tear apart, though. I'd imagine it'd seize and the belt would shred before anything else happened.

I'm toying with buying a second SC and switching to the fluiddampr spec'd to max it out. For me, there is a little too much extra vibration with the JHM and I really like the modular design concept of the FD unit.


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[whiped]

We should find a guinea pig who is willing to push their car to the limit.

Hell, I would happily throw some money in a pot via goFundMe or some other sort of crowdfunding for someone to go the extra mile and find that upper limit.

Obviously this person would have to be active here, willing to post logs/times/pics/etc.

Any takers? Anyone else willing to back it?

[s4matty]

Yup I'm game

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[s4matty]

I'm going to be running a 194mm with the apr blower pulley soon.Once I finish my c02 cooling setup.

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[whiped]

I'm going to be running a 194mm with the apr blower pulley soon.Once I finish my c02 cooling setup.

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And then you will be posting lots of pictures, your 1/4 mi times and dyno results right?

[s4matty]

I did the dyno on here a while ago
And have another dyno app booked for Fri at 11..Have done a lot of work since the last runs.

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[Loe]

I'm going to be running a 194mm with the apr blower pulley soon.Once I finish my c02 cooling setup.

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you have the solution I've been craving for (echo, echo, echo...lol)

[s4matty]

Hopefully have it done to test at the track this weekend..I will keep you posted Loe

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[OnEaNgRyBuNnY]

you have the solution I've been craving for (echo, echo, echo...lol)

Yeah sounds legit. Only in the very top end will you be over-spinning the blower. I'm thinking I'm going to have to go with a combo light this.

Any chance you'd be willing to share with us what your co2 setup consists of, or is it in another thread I missed???


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[whiped]

Any chance you'd be willing to share with us what your co2 setup consists of, or is it in another thread I missed???


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It's mentioned somewhere... Maybe the "What did you do with your S4 today" or "Supercharger cooling techniques" I think. (Don't have time to look right now)

@s4matty, more proof you need a build thread!

[OnEaNgRyBuNnY]

It's mentioned somewhere... Maybe the "What did you do with your S4 today" or "Supercharger cooling techniques" I think. (Don't have time to look right now)

@s4matty, more proof you need a build thread!

One of the few who would have an actual build...


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[Pawan2013]

I'm just thinking that some of us have very different set up/mods
And custom tuning for them can go along way.Not saying epl is the solution,but he seems to do a lot of custom tuning..I'm also running the CW with the apr and have really good results at the track with 104 tune and 91 pump with water/meth
But I want more! Lol

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What is a CW?

[s4matty]

Chipwerke

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[613B6]

Here is some good info on ratios, just scoll down: http://www.vdamper.com/30-V6-TSI-Supercharged_p_42.html

[Pawan2013]

sorry to be off topic but s4matty said he has the CW with apr, how does that work, is CW not just another tune? How does this setup work? Also thanks for the link 613B6, I think I'm going to go with a 206mm crank pulley with stock blower pulley instead of just a blower pulley or dual pulley, what are your guys thoughts on this?