Roto-Fab - Velocity stack

Trochoidal · 03-05-2022, 06:16 PM

Looks like Pray is still finding power. I’d really like to grab one and pair it with the Velossa. Swap it in at that track with an updated tune. This may be good for 1-2 MPH on my NA setup.

“We recieved another shipment of our Pray Performance Roto-fab Bell Mouths in. We got ten in and eight are already sold. We will place another order in a day or two if we get more requests. They are $150+shipping.

On my personal ZL1 we saw a 31rw gain in back to back testing. They work on N/A cars as well but the gains obviously won't be as high. We highly suggest you pair this product with the Velossa Tech Ram Air device we sell.

We recommend you only use these in racing applications as there will be nothing filtering the air entering the engine.“

laynlo15 · 03-05-2022, 06:34 PM

I think you'll see the most gain on PD blower setups. Don't think it will make anything close to that on NA, but still may see some power gains but not 31 rwhp

Duramacr1 · 03-05-2022, 07:20 PM

Mine gets here Wednesday . I don’t know about 2mph increase in the 1/4. That’s wishful thinking on an N/A application. Maybe 1mph if that in my opinion.

Trochoidal · 03-05-2022, 07:37 PM

Quote:

Originally Posted by laynlo15

I think you'll see the most gain on PD blower setups. Don't think it will make anything close to that on NA, but still may see some power gains but not 31 rwhp

No way to see 31 rwhp on NA that’s a given. I’ve always been willing to give ideas like this a try.

Quote:

Originally Posted by Duramacr1

Mine gets here Wednesday . I don’t know about 2mph increase in the 1/4. That’s wishful thinking on an N/A application. Maybe 1mph if that in my opinion.

I’ll take the “1mph here and 1mph there“ any day. That’s what makes it fun. Try new things and see what does and doesn’t work.

s346k · 03-05-2022, 07:49 PM

i think catering to that age old cone on a stick rotofab design is a waste of time. go over the radiator and stop wasting money on stuff returning $100/hp.

bell mouth has been around. i've seen it on some na cars the past couple of years. granted they are no maf race cars with hi rams and no other induction.

laynlo15 · 03-05-2022, 08:16 PM

Quote:

Originally Posted by s346k

i think catering to that age old cone on a stick rotofab design is a waste of time. go over the radiator and stop wasting money on stuff returning $100/hp.

bell mouth has been around. i've seen it on some na cars the past couple of years. granted they are no maf race cars with hi rams and no other induction.

Not a bad point, not really going to help with lower hp mods. Just do a Roto Fab and be done with it.

Trochoidal · 03-05-2022, 08:17 PM

Quote:

Originally Posted by s346k

i think catering to that age old cone on a stick rotofab design is a waste of time. go over the radiator and stop wasting money on stuff returning $100/hp.

bell mouth has been around. i've seen it on some na cars the past couple of years. granted they are no maf race cars with hi rams and no other induction.

Yeah they’ve been around for a long time. Maybe I’ll just make one like this or 3D print one so it’s only $30/hp. I still have the program saved for the aluminum one so I’d just have to change bore and maybe OD.

6spdhyperblue · 03-06-2022, 06:48 AM

I grabbed one. Was gonna try it in the a10 this opening weekend but the weather didn’t cooperate

KingLT1 · 03-06-2022, 07:51 AM

The 31whp gain was on a car making over 900whp. You also need a 103mm TB to maximize the gains.

Brett also said he seen a 1.5 tenth reduction and 1.5mph gain at the track on a 600whp NA combo. He didn't say if that was using a Rotofab or OTR setup.

6spdhyperblue · 03-06-2022, 07:59 AM

I would say it’s safe to assume a rotofab on the na.

If it gets me 0.5 mph it’s worth it to me.

s346k · 03-06-2022, 09:32 AM

it's also fair to note that the velocity stack replaces the air filter. i mean, i'm all about performance, but that's where i draw the line on a street car haha. also i imagine it would require a dedicated tune to compensate for the maf signal. i don't see swapping the vc at the track on an otherwise stock/bolt on car going well at all.

laynlo15 · 03-06-2022, 09:33 AM

Quote:

Originally Posted by KingLT1

The 31whp gain was on a car making over 900whp. You also need a 103mm TB to maximize the gains.

Brett also said he seen a 1.5 tenth reduction and 1.5mph gain at the track on a 600whp NA combo. He didn't say if that was using a Rotofab or OTR setup.

Yes that was on his Zl1.

KingLT1 · 03-06-2022, 10:05 AM

Yes you have to tune for the airflow change. You could tune for the Bellmouth and leave it as is even if you swap back to the filter. It's just going to run a tad rich in PE. Not enough to cost much power or hurt anything....especially NA setups.

Vtor_ZL1 · 03-06-2022, 10:38 AM

* Filter not shown ?

03-05-2022, 06:16 PM	#1
Trochoidal Drives: 2017 Camaro 2SS A8 Join Date: May 2019 Location: USA Posts: 1,656	Roto-Fab - Velocity stack Looks like Pray is still finding power. I’d really like to grab one and pair it with the Velossa. Swap it in at that track with an updated tune. This may be good for 1-2 MPH on my NA setup. “We recieved another shipment of our Pray Performance Roto-fab Bell Mouths in. We got ten in and eight are already sold. We will place another order in a day or two if we get more requests. They are $150+shipping. On my personal ZL1 we saw a 31rw gain in back to back testing. They work on N/A cars as well but the gains obviously won't be as high. We highly suggest you pair this product with the Velossa Tech Ram Air device we sell. We recommend you only use these in racing applications as there will be nothing filtering the air entering the engine.“ Attached Images __________________ Roto-Fab w/sound tube delete, Katech ported TB, Pray IM, Velossa, DD side markers, DSX FF, UPR Catch can, Halo brace, My custom vent gauge pod Originally Posted by arpad_m - “Aww, yet another oil thread with almost the same question in the OP“

03-05-2022, 06:34 PM	#2
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,860	I think you'll see the most gain on PD blower setups. Don't think it will make anything close to that on NA, but still may see some power gains but not 31 rwhp __________________ 2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff

03-05-2022, 07:49 PM	#5
s346k Drives: like an old lady Join Date: Jun 2012 Location: indiana Posts: 2,396	i think catering to that age old cone on a stick rotofab design is a waste of time. go over the radiator and stop wasting money on stuff returning $100/hp. bell mouth has been around. i've seen it on some na cars the past couple of years. granted they are no maf race cars with hi rams and no other induction. __________________ 2016+ camaro: everyone’s first car

03-06-2022, 06:48 AM	#8
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,675	I grabbed one. Was gonna try it in the a10 this opening weekend but the weather didn’t cooperate __________________ ‘22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28” dragpack - 11.68@122 ‘16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold)

03-06-2022, 07:51 AM	#9
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,799	The 31whp gain was on a car making over 900whp. You also need a 103mm TB to maximize the gains. Brett also said he seen a 1.5 tenth reduction and 1.5mph gain at the track on a 600whp NA combo. He didn't say if that was using a Rotofab or OTR setup. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

03-05-2022, 07:20 PM	#3
Duramacr1 2Spdsy Drives: 2021 Camaro LT1 A10 Join Date: Mar 2016 Location: Mission hills Posts: 122	Mine gets here Wednesday . I don’t know about 2mph increase in the 1/4. That’s wishful thinking on an N/A application. Maybe 1mph if that in my opinion.

03-06-2022, 07:59 AM	#10
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,675	I would say it’s safe to assume a rotofab on the na. If it gets me 0.5 mph it’s worth it to me. __________________ ‘22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28” dragpack - 11.68@122 ‘16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold)

03-06-2022, 09:32 AM	#11
s346k Drives: like an old lady Join Date: Jun 2012 Location: indiana Posts: 2,396	it's also fair to note that the velocity stack replaces the air filter. i mean, i'm all about performance, but that's where i draw the line on a street car haha. also i imagine it would require a dedicated tune to compensate for the maf signal. i don't see swapping the vc at the track on an otherwise stock/bolt on car going well at all. __________________ 2016+ camaro: everyone’s first car

03-06-2022, 10:05 AM	#13
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,799	Yes you have to tune for the airflow change. You could tune for the Bellmouth and leave it as is even if you swap back to the filter. It's just going to run a tad rich in PE. Not enough to cost much power or hurt anything....especially NA setups. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

03-06-2022, 10:38 AM	#14
Vtor_ZL1 Who Needs to KNOW? Drives: 18 ZLE Join Date: May 2018 Location: Left Side of the Moon Posts: 1,771	* Filter not shown ? __________________ ing for grip. Are you in the NY/NJ/PA/CT region? Join us for autox fun at MetLife Stadium. HUGE lots, tons of runs. http://www.motorsportsne.com/

User Name		Remember Me?
Password