Anyone seen the "big bore throttle body" by riot racing?

e90dum · 01-22-2018, 04:10 PM

http://www.westcoastriots.com/

I don't think I've seen this mentioned here

hassmaschine · 01-22-2018, 06:08 PM

I don't know what difference it would really make- surely BMW wouldn't have put a throttle plate that was too small, but maybe if the engine is already modded.

Somebody buy one and be the dyno guinea pig.

justpete · 01-22-2018, 06:31 PM

I've had one for more than a year now. Someday it'll get installed and dyno'ed.

rjahl · 01-22-2018, 07:15 PM

Quote:

Originally Posted by justpete

I've had one for more than a year now. Someday it'll get installed and dyno'ed.

Not going to to squat for a stock motor. Might help a modded motor but I suspect the intake manifold, cams and exhaust are the real limiter for big airflow. Past 7,000 RPM or maybe even 6,800 RPM the stock induction system looses efficiency and a larger throttle body is not going to fix it.

Don't forget the N52 only uses the throttle body as a back up to the VVT system. It normally does very little except help hold a little vacuum for the brakes and CCV.

justpete · 01-22-2018, 07:37 PM

Quote:

Originally Posted by rjahl

Not going to to squat for a stock motor. Might help a modded motor but I suspect the intake manifold, cams and exhaust are the real limiter for big airflow. Past 7,000 RPM or maybe even 6,800 RPM the stock induction system looses efficiency and a larger throttle body is not going to fix it.

Don't forget the N52 only uses the throttle body as a back up to the VVT system. It normally does very little except help hold a little vacuum for the brakes and CCV.

Sure, got it for the fun of it. If the cams had worked it might've been worth it, maybe. Not going to sweat it. A flowed head with ITBs might be more fun though.

3002 tii · 01-22-2018, 09:28 PM

Quote:

Originally Posted by e90dum

http://www.westcoastriots.com/

I don't think I've seen this mentioned here

They're bigger among the s52 crowd.

Noir · 01-23-2018, 04:08 PM

Quote:

Originally Posted by justpete

I've had one for more than a year now. Someday it'll get installed and dyno'ed.

I saw this thread and remembered you mentioning it at some point.
Off the top of your head, do you know the size difference between Riot's and Dinan's?

justpete · 01-23-2018, 04:08 PM

Quote:

Originally Posted by Noir

I saw this thread and remembered you mentioning it at some point.
Off the top of your head, do you know the size difference between Riot's and Dinan's?

No, not really, would have to look it up. Doubt it could be much bigger than the RR part though.

Noir · 01-23-2018, 05:01 PM

Quote:

Originally Posted by justpete

No, not really, would have to look it up. Doubt it could be much bigger than the RR part though.

Ain't even gon lie...
I was being lazy.
http://www.e90post.com/forums/showth...t=dinan+intake
So what are your thoughts on such a part?
In your honest opinion, is it worth the effort?

justpete · 01-23-2018, 05:08 PM

Quote:

Originally Posted by Noir

Ain't even gon lie...
I was being lazy.
http://www.e90post.com/forums/showth...t=dinan+intake
So what are your thoughts on such a part?
In your honest opinion, is it worth the effort?

By itself? No, can't see how.

Biginboca · 01-23-2018, 08:16 PM

Quote:

Originally Posted by Noir

Ain't even gon lie...
I was being lazy.
http://www.e90post.com/forums/showth...t=dinan+intake
So what are your thoughts on such a part?
In your honest opinion, is it worth the effort?

So the Riot Racing TB is 80mm and the Dinan is 79mm.

Did anyone ever dyno the Dinan one? If I thought the RR TB would give 8hp (or more) I might spring for it... But I don’t really see it doing all that much.

3002 tii · 01-23-2018, 11:16 PM

Quote:

Originally Posted by Biginboca

So the Riot Racing TB is 80mm and the Dinan is 79mm.

Did anyone ever dyno the Dinan one? If I thought the RR TB would give 8hp (or more) I might spring for it... But I don’t really see it doing all that much.

I think I may actually have a dyno with and without the dinan tb (and intake scoop), I think there was a 5-7whp difference after 6250 rpm...

Noir · 01-24-2018, 06:47 AM

Quote:

Originally Posted by 3002 tii

I think I may actually have a dyno with and without the dinan tb (and intake scoop), I think there was a 5-7whp difference after 6250 rpm...

Nice!

justpete · 01-24-2018, 03:14 PM

Quote:

Originally Posted by 3002 tii

I think I may actually have a dyno with and without the dinan tb (and intake scoop), I think there was a 5-7whp difference after 6250 rpm...

This'd be useful to see. What do you mean by intake scoop?

3002 tii · 01-24-2018, 09:35 PM

Quote:

Originally Posted by justpete

This'd be useful to see. What do you mean by intake scoop?

Ram air, air scoops, etc

3002 tii · 01-28-2018, 11:17 PM

As promised, my before and after are in reverse order:

Car: 2007 BMW Z4 3.0si MT with headers and 3" exhaust

Before: Dinan TB, Afe drop-in filter, RPi air scoops
After: Stock TB, paper filter, no scoops

Each curve was the best of 3 run runs on different dates, 4th gear (closest 1:1) at the same facility. I've since sold the Dinan TB and will throw in a K&N filter after the paper filter gets dirty and call it a day.

hassmaschine · 01-28-2018, 11:26 PM

Which line is before and which is after?

3002 tii · 01-28-2018, 11:29 PM

Quote:

Originally Posted by hassmaschine

Which line is before and which is after?

Green was before when I had the TB installed. Had to sell it in order to be compliant with time trial rules so took that and the scoops off which lost me some power in the upper range.

Biginboca · 01-29-2018, 04:08 AM

3002 tii thanks for posting your dyno. Doesn’t seem like there’s much power to be had with the throttle body. It probably would be a good compliment to a N54 manifold with tune.

Not sure the gains you show are worth it to me for the price though.

3002 tii · 01-29-2018, 06:22 AM

Quote:

Originally Posted by Biginboca

3002 tii thanks for posting your dyno. Doesn’t seem like there’s much power to be had with the throttle body. It probably would be a good compliment to a N54 manifold with tune.

Not sure the gains you show are worth it to me for the price though.

Not huge but but close to what Dinan reported. Btw if anyone wants a core TB to send in that's not their original I can sell you you my cheap one for $40 shipped.

CobraMarty · 02-06-2018, 07:01 AM

Thanks, got it.

Will probably order that bored TB from WCRiots in a couple of weeks now that I have a core to send them.

GORDON.M3 · 02-11-2018, 02:46 PM

Quote:

Originally Posted by Biginboca

So the Riot Racing TB is 80mm and the Dinan is 79mm.

Did anyone ever dyno the Dinan one? If I thought the RR TB would give 8hp (or more) I might spring for it... But I don’t really see it doing all that much.

Yes, and it virtually made no difference. I'm sure today with BPC tuning there would be some gains.

http://www.e90post.com/forums/showthread.php?t=36024

01-22-2018, 04:10 PM	#1
e90dum Second Lieutenant 59 Rep 275 Posts Drives: E90 LCI 328i manual Join Date: Dec 2015 Location: East coast US iTrader: (0)	Anyone seen the "big bore throttle body" by riot racing? http://www.westcoastriots.com/ I don't think I've seen this mentioned here __________________
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01-22-2018, 06:08 PM	#2
hassmaschine Major General 3966 Rep 7,215 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	I don't know what difference it would really make- surely BMW wouldn't have put a throttle plate that was too small, but maybe if the engine is already modded. Somebody buy one and be the dyno guinea pig.
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01-22-2018, 06:31 PM	#3
justpete Brigadier General 1233 Rep 3,778 Posts Drives: '11 328i '19 M6 Join Date: Jan 2012 Location: DFW iTrader: (0) Garage List 2019 BMW M6 [10.00] 2011 BMW 328i [9.00]	I've had one for more than a year now. Someday it'll get installed and dyno'ed. __________________ 2011 E90 328i 6MT, BMW Aero, CF hood/boot, PI+CAI+RM+3IM+BPC, SS+CI528+ThermoTec+SS#1+2XBurns, AKG 75D eng/trans, Al/Delrin diff/RS, CM 850, UCP, CAE, AKG DSSR, DiffsOnline 3.91 30/90 LSD+BW cooler, C&R, Setrab, Accusump, AST 3-way+Swift, Aurora PR+BW spherical, Vorshlag CPs, M3 brace+UR bar, ARC-8 18x8.5, 255 R1R, RB/CSL rotors+cooling, 135i calipers, RS29, RT700, Safecraft, OMP HTE-R+804F+QD Superquadro, 6pt cage+FIA, Braille, RT DL1Mk3
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01-28-2018, 11:17 PM	#16
3002 tii Lieutenant General 2282 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.24]	As promised, my before and after are in reverse order: Car: 2007 BMW Z4 3.0si MT with headers and 3" exhaust Before: Dinan TB, Afe drop-in filter, RPi air scoops After: Stock TB, paper filter, no scoops Each curve was the best of 3 run runs on different dates, 4th gear (closest 1:1) at the same facility. I've since sold the Dinan TB and will throw in a K&N filter after the paper filter gets dirty and call it a day. Attached Images __________________ Follow for latest mods
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01-28-2018, 11:26 PM	#17
hassmaschine Major General 3966 Rep 7,215 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	Which line is before and which is after?
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01-29-2018, 04:08 AM	#19
Biginboca Colonel 3764 Rep 2,738 Posts Drives: 2009 E92 328i 6MT Join Date: Jun 2017 Location: Boynton Beach, FL... USA iTrader: (3)	3002 tii thanks for posting your dyno. Doesn’t seem like there’s much power to be had with the throttle body. It probably would be a good compliment to a N54 manifold with tune. Not sure the gains you show are worth it to me for the price though.
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02-06-2018, 07:01 AM	#21
CobraMarty Major 619 Rep 1,402 Posts Drives: 2007 328xi e90 + e92 Join Date: Sep 2010 Location: BimmerMILVs.com iTrader: (7)	Thanks, got it. Will probably order that bored TB from WCRiots in a couple of weeks now that I have a core to send them.
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