Riss Racing Axle Back Dyno #'s

SCCAForums.com · 08-10-2009, 12:14 PM

Hey guys, well as I've been dynoing just about everything we can get for these cars, I finally was rewarded with some great gains!

Before Dyno: Car made 346 RWHP 252 RWTQ

After Dyno: Car made just over 360 RWHP and 260 RWTQ!

It was nice to see a bolt on set of Mufflers add 14 RWHP & 8 RWTQ.

You can also see the TQ below 3,000 RPMS is considerably more... and is what is most noticeable driving away from the stoplight.

When I added these mufflers, I'd find myself 'forgetting' to put the car right into M mode... because it felt so strong & responsive down low!

I've now sent my ECU to PowerChip, to get their Flash Tune, and will try to get back to the Dyno to post those gains in the next week or so.

The Riss Racing Mufflers do have some drone noticeable inside the car. In speaking with some others... we've discussed the possibility, if DynaMat in the trunk would help to reduce it as well?

The sound outside the car is amazing, and the Dyno Gains are very impressive.

Peace,
Dave

powertrip · 08-10-2009, 12:26 PM

Wow, very nice gains for just an axle-back

. Are you back to running stock x-pipe now?

SCCAForums.com · 08-10-2009, 12:39 PM

No, to keep the before & after consistent I left the RPI Off-Road on... since that was the 346 'Before' Dyno'.

I now have the Riss Racing Catted X-Pipe... which I'm going to assume flows the same or better... I really like their X design.

Peace,
Dave

powertrip · 08-10-2009, 12:48 PM

Is the drone as bad as it's made out to be with your current x-pipe set-up?

SCCAForums.com · 08-10-2009, 01:03 PM

Not really, no... but there definitely is drone. My buddy who rode with me, after the install, thought it sounded perfect... But I could see if one was say '45' (??) family, strict wife... it could still come across as a bit more inside the car.

Again, though... I was coming from the RPI Off-Road Pipes... and while they were PERFECT w/ stock Mufflers.. they were WAY TO LOUD with the Riss Mufflers!

Dave

SV Concepts III · 08-10-2009, 02:14 PM

Dave,

Those are solid numbers, thanks for posting up the graphs and information.

aus · 08-10-2009, 04:42 PM

Thanks for posting the Dynos.

Did the RPI's have any cats/resonators? Or was it a straight through design?

Can you use the Bluetooth OK with it on?

I'm seriously considering this but don't plan on adding any X-pipe.

SCCAForums.com · 08-10-2009, 04:53 PM

Hi Aus, the RPI's had no cats and no resonators, just straight through.

Bluetooth was difficult w/ the RPI Off Road System.

Bluetoothe is much better w/ the HFC X-Pipe. I'd imagine if you're going to keep your front section stock, it would be really good.

Peace,
Dave

novablackm3 · 08-10-2009, 05:23 PM

i can confirm the from the butt dyno the riss deff did add power.

Adam from riss has also been very responsive in making sure Im completely satisfied.

Riss guys are definitely turning things around

DrKevM5 · 08-10-2009, 06:26 PM

I agree about the Riss guys. They are being responsive to our concerns and are trying to make this right. But this may very well be the best aftermarket exhaust from outside the car I've ever heard. I've had six people in the past 4 days stop and ask what type of exhaust it is. If they can fix the resonance issue, it's a slam dunk.

Ron@Modbargains · 08-10-2009, 06:30 PM

Those are some big numbers

MrHarris · 08-10-2009, 06:39 PM

I agree w/ the resonance issue but it does sound great. Very nice to hear of the positive power gains. Their x-pipe is very well made.

aus · 08-10-2009, 10:00 PM

Is the resonance only with the HFC/X-pipe + axle back Riss unit?

Dave, thanks for all the response.

powertrip · 08-11-2009, 01:13 AM

Hmmm...I'm running resonators with my HFC's...I wonder how much that would reduce the drone? I'm tempted to try this exhaust because it's priced right, and obviously puts down the power

.

Quote:

Originally Posted by SCCAForums.com

Not really, no... but there definitely is drone. My buddy who rode with me, after the install, thought it sounded perfect... But I could see if one was say '45' (??) family, strict wife... it could still come across as a bit more inside the car.

Again, though... I was coming from the RPI Off-Road Pipes... and while they were PERFECT w/ stock Mufflers.. they were WAY TO LOUD with the Riss Mufflers!

Dave

Ca$hOnly · 08-11-2009, 02:17 AM

Solid numbers. Too bad about the drone, but it is expected tbh.

CanM3 · 08-11-2009, 02:54 AM

so you were running an xpipe with the stock muffler....is that right?
If thats the case, then the stock muffler was the bottleneck in the system, so when you put on the free flow muffs your gains shown were the mufflers + the unrealized gains of the xpipe, not just the axle back itself.

Tyler McQuarrie · 08-13-2009, 11:20 AM

Are you going to post any video/sound bites? I would love to hear what it sounds like since I'm going this direction

SCCAForums.com · 08-13-2009, 12:25 PM

I have the DME out being flashed right now...

So... Can't upload any until probably beginning of next week.

Thanks,
Dave

08-10-2009, 12:14 PM	#1
SCCAForums.com Captain 39 Rep 726 Posts Drives: Race Cars Join Date: Dec 2007 Location: Chandler, AZ iTrader: (2)	Riss Racing Axle Back Dyno #'s Hey guys, well as I've been dynoing just about everything we can get for these cars, I finally was rewarded with some great gains! Before Dyno: Car made 346 RWHP 252 RWTQ After Dyno: Car made just over 360 RWHP and 260 RWTQ! It was nice to see a bolt on set of Mufflers add 14 RWHP & 8 RWTQ. You can also see the TQ below 3,000 RPMS is considerably more... and is what is most noticeable driving away from the stoplight. When I added these mufflers, I'd find myself 'forgetting' to put the car right into M mode... because it felt so strong & responsive down low! I've now sent my ECU to PowerChip, to get their Flash Tune, and will try to get back to the Dyno to post those gains in the next week or so. The Riss Racing Mufflers do have some drone noticeable inside the car. In speaking with some others... we've discussed the possibility, if DynaMat in the trunk would help to reduce it as well? The sound outside the car is amazing, and the Dyno Gains are very impressive. Peace, Dave Attached Images __________________ 2010 ZR1 3ZR Wht/Blk 10.7 @ 132 2011 C63 AMG P31 Car Blk/Blk 11.8 @ 117 2010 Nissan GT-R 10.8 @ 129 (Sold) 2008 Lexus IS-F (Sold) 12.5 @ 113 / 2008 Shelby GT500 (Sold) 11.3 @ 126 2008 e90 M3 6MT 12.8 @ 111 (Sold) / 2006 e60 M5 12.4 @ 114 (Sold)
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08-10-2009, 12:26 PM	#2
powertrip Scared money don't make money. 67 Rep 1,449 Posts Drives: 2009 E92 M3 DCT Join Date: Apr 2009 Location: Irvine, CA iTrader: (3) Garage List 2009 E92 M3 [0.00]	Wow, very nice gains for just an axle-back . Are you back to running stock x-pipe now? __________________ 2009 E92 M3/DCT/Alpine White/Fox Red/Carbon Leather OE Tuned 402 whp & 303 wtq/Gintani X-pipe/MXP Axle Back/Rogue Pulley/AFE Stage 2/Cosmetics By IND & EAS HUGE THANKS: Gintani, OE Tuning, and EAS
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08-10-2009, 12:39 PM	#3
SCCAForums.com Captain 39 Rep 726 Posts Drives: Race Cars Join Date: Dec 2007 Location: Chandler, AZ iTrader: (2)	No, to keep the before & after consistent I left the RPI Off-Road on... since that was the 346 'Before' Dyno'. I now have the Riss Racing Catted X-Pipe... which I'm going to assume flows the same or better... I really like their X design. Peace, Dave __________________ 2010 ZR1 3ZR Wht/Blk 10.7 @ 132 2011 C63 AMG P31 Car Blk/Blk 11.8 @ 117 2010 Nissan GT-R 10.8 @ 129 (Sold) 2008 Lexus IS-F (Sold) 12.5 @ 113 / 2008 Shelby GT500 (Sold) 11.3 @ 126 2008 e90 M3 6MT 12.8 @ 111 (Sold) / 2006 e60 M5 12.4 @ 114 (Sold)
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08-10-2009, 12:48 PM	#4
powertrip Scared money don't make money. 67 Rep 1,449 Posts Drives: 2009 E92 M3 DCT Join Date: Apr 2009 Location: Irvine, CA iTrader: (3) Garage List 2009 E92 M3 [0.00]	Is the drone as bad as it's made out to be with your current x-pipe set-up? __________________ 2009 E92 M3/DCT/Alpine White/Fox Red/Carbon Leather OE Tuned 402 whp & 303 wtq/Gintani X-pipe/MXP Axle Back/Rogue Pulley/AFE Stage 2/Cosmetics By IND & EAS HUGE THANKS: Gintani, OE Tuning, and EAS
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08-10-2009, 01:03 PM	#5
SCCAForums.com Captain 39 Rep 726 Posts Drives: Race Cars Join Date: Dec 2007 Location: Chandler, AZ iTrader: (2)	Not really, no... but there definitely is drone. My buddy who rode with me, after the install, thought it sounded perfect... But I could see if one was say '45' (??) family, strict wife... it could still come across as a bit more inside the car. Again, though... I was coming from the RPI Off-Road Pipes... and while they were PERFECT w/ stock Mufflers.. they were WAY TO LOUD with the Riss Mufflers! Dave __________________ 2010 ZR1 3ZR Wht/Blk 10.7 @ 132 2011 C63 AMG P31 Car Blk/Blk 11.8 @ 117 2010 Nissan GT-R 10.8 @ 129 (Sold) 2008 Lexus IS-F (Sold) 12.5 @ 113 / 2008 Shelby GT500 (Sold) 11.3 @ 126 2008 e90 M3 6MT 12.8 @ 111 (Sold) / 2006 e60 M5 12.4 @ 114 (Sold)
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08-10-2009, 02:14 PM	#6
SV Concepts III Lieutenant General 375 Rep 17,017 Posts Drives: BMW Duh Join Date: Apr 2005 Location: Santa Clara iTrader: (13)	Dave, Those are solid numbers, thanks for posting up the graphs and information.
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08-10-2009, 04:42 PM	#7
aus Major General 890 Rep 9,031 Posts Drives: Odysse Join Date: Jul 2005 Location: Seal Beach, CA iTrader: (10)	Thanks for posting the Dynos. Did the RPI's have any cats/resonators? Or was it a straight through design? Can you use the Bluetooth OK with it on? I'm seriously considering this but don't plan on adding any X-pipe. __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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08-10-2009, 04:53 PM	#8
SCCAForums.com Captain 39 Rep 726 Posts Drives: Race Cars Join Date: Dec 2007 Location: Chandler, AZ iTrader: (2)	Hi Aus, the RPI's had no cats and no resonators, just straight through. Bluetooth was difficult w/ the RPI Off Road System. Bluetoothe is much better w/ the HFC X-Pipe. I'd imagine if you're going to keep your front section stock, it would be really good. Peace, Dave __________________ 2010 ZR1 3ZR Wht/Blk 10.7 @ 132 2011 C63 AMG P31 Car Blk/Blk 11.8 @ 117 2010 Nissan GT-R 10.8 @ 129 (Sold) 2008 Lexus IS-F (Sold) 12.5 @ 113 / 2008 Shelby GT500 (Sold) 11.3 @ 126 2008 e90 M3 6MT 12.8 @ 111 (Sold) / 2006 e60 M5 12.4 @ 114 (Sold)
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08-10-2009, 05:23 PM	#9
novablackm3 Captain 125 Rep 813 Posts Drives: Performante, G05 M50i, RR SVR Join Date: Mar 2009 Location: Northern VA iTrader: (3)	i can confirm the from the butt dyno the riss deff did add power. Adam from riss has also been very responsive in making sure Im completely satisfied. Riss guys are definitely turning things around __________________ Huracán Performante 18- Novitec Springs \| RR SVR 19 \| G05 X5 M50i \| E70 11 X5M retired \| Jerez Black E92 10 m3 RE SSK \| AFE Filter \| Fabspeed XFC / Xpipe \| AA ECU 1.5v \| BMW PSW \| Envy Charger \| Megan Exhaust
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08-10-2009, 06:26 PM	#10
DrKevM5 Colonel 2269 Rep 2,519 Posts Drives: G05 X5, F87 M2 Join Date: Aug 2008 Location: Western NY iTrader: (7)	I agree about the Riss guys. They are being responsive to our concerns and are trying to make this right. But this may very well be the best aftermarket exhaust from outside the car I've ever heard. I've had six people in the past 4 days stop and ask what type of exhaust it is. If they can fix the resonance issue, it's a slam dunk. __________________ ?16 M2 Long Beach Blue/Black, 6MT '22 X5 4.0 M Sport Black Sapphire/Tartufo ?22 Tesla Model Y Performance Midnight Silver/White
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08-10-2009, 06:30 PM	#11
Ron@Modbargains 58 Rep 2,201 Posts Drives: 996TT/ae86 Join Date: Aug 2005 Location: 1721 E. Lambert Rd #C, La Habra, CA 90631 iTrader: (3)	Those are some big numbers
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08-10-2009, 06:39 PM	#12
MrHarris yodog 197 Rep 5,026 Posts Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca iTrader: (5) Garage List 2009 BMW [10.00]	I agree w/ the resonance issue but it does sound great. Very nice to hear of the positive power gains. Their x-pipe is very well made. __________________ 2009 E92 M3 \| Alpine White \| Black Extended \| Advan RS \| Turner Test Pipes \| Dinan Axle-Back \| OETuning \| Eibach Springs \| UUC SSK \| VRS Front Lip \| VRS Type I Diffuser \| Matte Black \| RPi Scoops \| MS Filter \| Yokohama AD08 \| F1 Pinnacle Special Thanks: Gintani \| OETuning \| eAs
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08-10-2009, 10:00 PM	#13
aus Major General 890 Rep 9,031 Posts Drives: Odysse Join Date: Jul 2005 Location: Seal Beach, CA iTrader: (10)	Is the resonance only with the HFC/X-pipe + axle back Riss unit? Dave, thanks for all the response. __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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08-11-2009, 02:17 AM	#15
Ca$hOnly Major 47 Rep 1,077 Posts Drives: E92 M3 Join Date: Apr 2009 Location: In ur fridge, eatin ur foodz iTrader: (5)	Solid numbers. Too bad about the drone, but it is expected tbh. __________________
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08-11-2009, 02:54 AM	#16
CanM3 Private 7 Rep 82 Posts Drives: 2008 JB M3 Join Date: May 2009 Location: Calgary, Canada iTrader: (0)	so you were running an xpipe with the stock muffler....is that right? If thats the case, then the stock muffler was the bottleneck in the system, so when you put on the free flow muffs your gains shown were the mufflers + the unrealized gains of the xpipe, not just the axle back itself.
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08-13-2009, 11:20 AM	#17
Tyler McQuarrie Private 5 Rep 77 Posts Drives: 2008 E90 M3 Join Date: Dec 2008 Location: S.F. Bay Area iTrader: (1)	Are you going to post any video/sound bites? I would love to hear what it sounds like since I'm going this direction __________________ www.tylermcquarrie.com
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08-13-2009, 12:25 PM	#18
SCCAForums.com Captain 39 Rep 726 Posts Drives: Race Cars Join Date: Dec 2007 Location: Chandler, AZ iTrader: (2)	I have the DME out being flashed right now... So... Can't upload any until probably beginning of next week. Thanks, Dave __________________ 2010 ZR1 3ZR Wht/Blk 10.7 @ 132 2011 C63 AMG P31 Car Blk/Blk 11.8 @ 117 2010 Nissan GT-R 10.8 @ 129 (Sold) 2008 Lexus IS-F (Sold) 12.5 @ 113 / 2008 Shelby GT500 (Sold) 11.3 @ 126 2008 e90 M3 6MT 12.8 @ 111 (Sold) / 2006 e60 M5 12.4 @ 114 (Sold)
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