Nitrous - HP gain VS Shot size - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SSGraybeard · 07-12-2018, 03:12 PM

Hi Guys & Gals, first post here. Have had my Camaro for a little over a year & a 1/2, have been lurking on this forum since the day I bought the car. Have learned a TON of info from this forum, all mods I have done I researched here first.

Question: Car is at the Dyno today (I'm at work) & the tuner just called me asking if I was positive I'm running a 100 shot (I am). He said we are seeing almost 155 rwhp/rwtq increase with the Nitrous! Has anyone else seen such a difference in HP VS shot size?

Will post actual numbers after I pick up the car & get Dyno sheet.

Thanks,
Jim

Edit: Just got back from picking up the car. He pulled quite a bit of timing from original tune (8 degrees) lost 34 HP/41TQ. Now it sits at 370rwhp/366rwtq on the 100 shot it makes 561rwhp/569rwtq, so a 191hp/203tq gain on a 100 shot. Base run today was down 3 HP due to weather conditions from original tuning. AFR is 12.3 N/A & 11.5 - 12.00 on nitrous, running 92 octane with a bottle of torqo added. Timing was 22 degrees now at 14 degrees.

Clarkstar · 07-12-2018, 04:32 PM

I put in "75" jets and got 100hp on the dyno. I think it depends alot on the set up (cam, heads, intake).

joshnmn · 07-12-2018, 06:06 PM

Yikes! That's a heck of a shot

SSGraybeard · 07-13-2018, 12:36 AM

Quote:

Originally Posted by jnmn

Yikes! That's a heck of a shot

I know right? Just got the system dialed in today...the #'s quoted are straight off the dyno sheets, base run, timing retard run, then nitrous pull...I was shocked at the #'s as well...A lot more than I expected from a 100 shot & conservative tune, can still put more timing back in, most likely won't this year, I like the safety net of the tune. BTW Dynojet dyno if that matters to anybody, but car was bone stock when I started & this is the only dyno it's been on, so #'s for comparison purposes for my car should be realistic?

Badbubba · 07-14-2018, 10:40 PM

N.O. recommended jetting is for rear wheel hp. That seems a bit much. Double check jets. 52N 28F.
Maybe stamped wrong? Is the shop adjusting the duty cycle of the injectors or adjusting fuel jet. My 2010 stock fuel system would not support that amount. After the initial hit, fuel pressure recovery was way too slow.

SSGraybeard · 07-15-2018, 12:42 AM

Quote:

Originally Posted by Badbubba

N.O. recommended jetting is for rear wheel hp. That seems a bit much. Double check jets. 52N 28F.
Maybe stamped wrong? Is the shop adjusting the duty cycle of the injectors or adjusting fuel jet. My 2010 stock fuel system would not support that amount. After the initial hit, fuel pressure recovery was way too slow.

Thank You for the input, I was thinking along the same line...reverted back to my street tune for now until I get it all figured out. Strip is not open this weekend here so may have some better info next week. However I am positive that the jets are "100" shot stamping...who knows

ttshovel · 07-15-2018, 02:03 PM

this is why nitrous guys refer to jet size instead of "shot size". there isn't always a direct correlation between the two. if your tune is good, leave it be and run it, you'll be fine

jc615 · 07-15-2018, 09:30 PM

Put 200 pills in and picked up just over 200 hp and tq

SSGraybeard · 07-16-2018, 03:33 AM

Quote:

Originally Posted by ttshovel

this is why nitrous guys refer to jet size instead of "shot size". there isn't always a direct correlation between the two. if your tune is good, leave it be and run it, you'll be fine

thanks for the info...tune is super safe will run it as is next weekend

Badbubba · 07-16-2018, 02:20 PM

What's the bottle pressure?

SSGraybeard · 07-16-2018, 02:54 PM

bottle was full approx. 950 ish w/o heater on. that was early am...I'm sure it was around 1100 or so by the time they were tuning, it's been hot as hell here lately.

07-12-2018, 03:12 PM	#1
SSGraybeard Drives: 2010 SS/RS M6 Join Date: Oct 2017 Location: Portland, Or Posts: 24	Nitrous - HP gain VS Shot size Hi Guys & Gals, first post here. Have had my Camaro for a little over a year & a 1/2, have been lurking on this forum since the day I bought the car. Have learned a TON of info from this forum, all mods I have done I researched here first. Question: Car is at the Dyno today (I'm at work) & the tuner just called me asking if I was positive I'm running a 100 shot (I am). He said we are seeing almost 155 rwhp/rwtq increase with the Nitrous! Has anyone else seen such a difference in HP VS shot size? Will post actual numbers after I pick up the car & get Dyno sheet. Thanks, Jim Edit: Just got back from picking up the car. He pulled quite a bit of timing from original tune (8 degrees) lost 34 HP/41TQ. Now it sits at 370rwhp/366rwtq on the 100 shot it makes 561rwhp/569rwtq, so a 191hp/203tq gain on a 100 shot. Base run today was down 3 HP due to weather conditions from original tuning. AFR is 12.3 N/A & 11.5 - 12.00 on nitrous, running 92 octane with a bottle of torqo added. Timing was 22 degrees now at 14 degrees. __________________ K & N CAI, Vmax PTB, Moroso CC, MSD Blaster Coils/8.5 MSD Plug Wires, Kooks LTH W/ HF Cats, Custom exhaust system W/ Noweeds Cutouts, Upgrade bushing kit for Hurst shifter, Hurst Line Lock, DSS Stage 4 Axles, DSS one piece CF Drive Shaft, Custom Built 1000 HP Clutch, BMR Drag Package/Toe Rods/Coil Over Conversion etc., BMR Extreme rear sway bar, BMR Sub frame connectors, BMR trans tunnel brace, BMR DS safety loop, Nitrous Outlet wet system W/100 shot, Nitto 315 DR's for strip, 315's for dd, Dyno tuned at 406rwhp/407rwtq N/A, 561/569 on Nitrous. Last edited by SSGraybeard; 07-12-2018 at 05:17 PM.

07-12-2018, 04:32 PM	#2
Clarkstar Drives: 2013 1SS 1LE Join Date: Jun 2016 Location: Ixonia wi Posts: 1,456	I put in "75" jets and got 100hp on the dyno. I think it depends alot on the set up (cam, heads, intake). __________________ 2013 1le- Katech 416 short block, TSP custom grind cam, LOD intake, cnc heads by F.ED., Nick William's 102mm T.B., CORN fed, Pedders coilovers. Performance street alingnment by Justin at Lake Country Alignment and dyno tune by Late Model Throttle. 603 h.p. 495 ft lbs tq.

07-14-2018, 10:40 PM	#5
Badbubba GrINned & JUICEd Drives: 15STI, 10Expy, 10 2SS/RS M6, 47KB1 Join Date: Nov 2009 Location: Pittsburgh, PA Posts: 1,247	N.O. recommended jetting is for rear wheel hp. That seems a bit much. Double check jets. 52N 28F. Maybe stamped wrong? Is the shop adjusting the duty cycle of the injectors or adjusting fuel jet. My 2010 stock fuel system would not support that amount. After the initial hit, fuel pressure recovery was way too slow. __________________ GPI SS3 Cam & stuff,N.O. Plate(dedicated fuel tank,progressive,fuel hose upgrade,remote opener,heater,console switches),LNC2000,CTAP,ARH 1 7/8" LTs/gutted cats/X pipe/mufflers,Jet Hot coated LTs,GPI HPT Tune,CAI, Scoop,Rx Catch Can,Gates heater hose relocation, Remote clutch & auto brake res,Metco loop,Momentum Tunnel Brace,TSW Nurb 18",555 & 05,Pfadt trailing arms & toe rods,Autometer WB,Fesler Pillar Pod,LED strips (int),Lloyds floor & trunk mats,LED DRL/front turn & license plate,DRL harness,VLEDs tail lights,Plasticoat Bowties. Ord: Oct 5, 2009 Rec: Nov 19, 2009 13.17@112.6 stock

07-15-2018, 02:03 PM	#7
ttshovel Drives: 12 camaro ss, 72 chevelle, 91camaro Join Date: Dec 2013 Location: findlay,oh Posts: 2,069	this is why nitrous guys refer to jet size instead of "shot size". there isn't always a direct correlation between the two. if your tune is good, leave it be and run it, you'll be fine __________________ 12 camaro ss 427lsx, th400, f310 heads, crower shaft mounts, gpi specd solid roller, shearerfab 2k hp a/w, twin bullseye 88mm turbos, hughes pro ssx bolt together converter, holley dominator, 8.50 cert, backhalf, Ford 9", 33x17x16 tires, c16 fuel

07-16-2018, 02:20 PM	#10
Badbubba GrINned & JUICEd Drives: 15STI, 10Expy, 10 2SS/RS M6, 47KB1 Join Date: Nov 2009 Location: Pittsburgh, PA Posts: 1,247	What's the bottle pressure? __________________ GPI SS3 Cam & stuff,N.O. Plate(dedicated fuel tank,progressive,fuel hose upgrade,remote opener,heater,console switches),LNC2000,CTAP,ARH 1 7/8" LTs/gutted cats/X pipe/mufflers,Jet Hot coated LTs,GPI HPT Tune,CAI, Scoop,Rx Catch Can,Gates heater hose relocation, Remote clutch & auto brake res,Metco loop,Momentum Tunnel Brace,TSW Nurb 18",555 & 05,Pfadt trailing arms & toe rods,Autometer WB,Fesler Pillar Pod,LED strips (int),Lloyds floor & trunk mats,LED DRL/front turn & license plate,DRL harness,VLEDs tail lights,Plasticoat Bowties. Ord: Oct 5, 2009 Rec: Nov 19, 2009 13.17@112.6 stock

07-12-2018, 06:06 PM	#3
joshnmn 2&THEHIT Drives: 5th Gen Camaro; 5th Gen Ram 3500 Join Date: Mar 2018 Location: Garner, NC Posts: 1,012 View My Garage	Yikes! That's a heck of a shot

07-15-2018, 09:30 PM	#8
jc615 Account Suspended Drives: Camaro and Sierra Join Date: Jul 2012 Location: Virginia Posts: 795	Put 200 pills in and picked up just over 200 hp and tq

07-16-2018, 02:54 PM	#11
SSGraybeard Drives: 2010 SS/RS M6 Join Date: Oct 2017 Location: Portland, Or Posts: 24	bottle was full approx. 950 ish w/o heater on. that was early am...I'm sure it was around 1100 or so by the time they were tuning, it's been hot as hell here lately. __________________ K & N CAI, Vmax PTB, Moroso CC, MSD Blaster Coils/8.5 MSD Plug Wires, Kooks LTH W/ HF Cats, Custom exhaust system W/ Noweeds Cutouts, Upgrade bushing kit for Hurst shifter, Hurst Line Lock, DSS Stage 4 Axles, DSS one piece CF Drive Shaft, Custom Built 1000 HP Clutch, BMR Drag Package/Toe Rods/Coil Over Conversion etc., BMR Extreme rear sway bar, BMR Sub frame connectors, BMR trans tunnel brace, BMR DS safety loop, Nitrous Outlet wet system W/100 shot, Nitto 315 DR's for strip, 315's for dd, Dyno tuned at 406rwhp/407rwtq N/A, 561/569 on Nitrous. Last edited by SSGraybeard; 07-16-2018 at 03:05 PM.