05-27-2017, 05:12 PM | #1 |
Drives: 2013 Camaro SS LS3 Join Date: Jun 2015
Location: Davenport IA
Posts: 718
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18:1 AFR??!!
This is the second time I have my car out tuning on nitrous. I'm running C16 in a stand alone. Last time I sprayed, my AFR sat at around 10.8:1. I'm usually constantly 11.8:1 WOT on the motor and 10.8:1 on nitrous. Now I'm 12.5-13.2:1 on the motor and 18:1 and up on nitrous! My idle and normal driving is still the same around 14.7:1 stoich. The only thing I've changed was the plugs. I've went from b8efs to b9efs. The car doesn't seem to feel any different than normal under normal conditions and wot.
Anyone have any ideas? I was thinking maybe I leas fouled the O2 sensor but if that's the case why does it seem to function normally under normal driving and idle?
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Romans 5:8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. -Fastlane Cold Air Intake, NPP cat back exhaust, Stainless Works LT Headers, 2r max camshaft, Stage 3 Ported Heads (Manley Stainless steel values, titanium retainers, dual valve springs, bronze guides), Wiseco Forged Pistons, K1 Forged Rods, Clevite Bearings, Factory Crankshaft, Comp Cams rocker arm trunion kit, Morel 5315 lifters, JP performance single billet timing chain, Melling oil pump, Spec stage 3+ clutch and flywheel, BMR trailing arms, Nitto 555r 305/35/20. |
05-27-2017, 05:19 PM | #2 |
Drives: 2010 ss Join Date: Oct 2015
Location: windom mn
Posts: 337
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my guess is your spaying nitrous without fuel.turn off the nitrous bottle and run the nitrous system then check yr air fuel
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05-27-2017, 05:40 PM | #3 |
Check each component
Fuel solenoid , clogged nozzle or jet, stand alone pump, it's a fuel supply issue. Since it's happening on motor and on nitrous it could even be an injector that is a little off.
The previous post is a real good way to start troubleshooting. |
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05-27-2017, 07:04 PM | #4 | |
Drives: 2013 Camaro SS LS3 Join Date: Jun 2015
Location: Davenport IA
Posts: 718
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Quote:
Sent from my VS990 using Tapatalk
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Romans 5:8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. -Fastlane Cold Air Intake, NPP cat back exhaust, Stainless Works LT Headers, 2r max camshaft, Stage 3 Ported Heads (Manley Stainless steel values, titanium retainers, dual valve springs, bronze guides), Wiseco Forged Pistons, K1 Forged Rods, Clevite Bearings, Factory Crankshaft, Comp Cams rocker arm trunion kit, Morel 5315 lifters, JP performance single billet timing chain, Melling oil pump, Spec stage 3+ clutch and flywheel, BMR trailing arms, Nitto 555r 305/35/20. |
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05-27-2017, 07:05 PM | #5 | |
Drives: 2013 Camaro SS LS3 Join Date: Jun 2015
Location: Davenport IA
Posts: 718
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Quote:
Sent from my VS990 using Tapatalk
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Romans 5:8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. -Fastlane Cold Air Intake, NPP cat back exhaust, Stainless Works LT Headers, 2r max camshaft, Stage 3 Ported Heads (Manley Stainless steel values, titanium retainers, dual valve springs, bronze guides), Wiseco Forged Pistons, K1 Forged Rods, Clevite Bearings, Factory Crankshaft, Comp Cams rocker arm trunion kit, Morel 5315 lifters, JP performance single billet timing chain, Melling oil pump, Spec stage 3+ clutch and flywheel, BMR trailing arms, Nitto 555r 305/35/20. |
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05-27-2017, 07:27 PM | #6 |
Drives: 2013 Camaro SS Turbo Join Date: Apr 2014
Location: South Florida
Posts: 1,525
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Pull all the plugs, one will be different than all the others
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05-27-2017, 07:33 PM | #7 | |
Drives: 2013 Camaro SS LS3 Join Date: Jun 2015
Location: Davenport IA
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Quote:
Sent from my VS990 using Tapatalk
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Romans 5:8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. -Fastlane Cold Air Intake, NPP cat back exhaust, Stainless Works LT Headers, 2r max camshaft, Stage 3 Ported Heads (Manley Stainless steel values, titanium retainers, dual valve springs, bronze guides), Wiseco Forged Pistons, K1 Forged Rods, Clevite Bearings, Factory Crankshaft, Comp Cams rocker arm trunion kit, Morel 5315 lifters, JP performance single billet timing chain, Melling oil pump, Spec stage 3+ clutch and flywheel, BMR trailing arms, Nitto 555r 305/35/20. |
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05-27-2017, 07:36 PM | #8 |
Drives: 2013 Camaro SS LS3 Join Date: Jun 2015
Location: Davenport IA
Posts: 718
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Also if my a/f was that far lean, wouldn't it make the car shudder or backfire? This is on a pretty big shot.
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Romans 5:8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. -Fastlane Cold Air Intake, NPP cat back exhaust, Stainless Works LT Headers, 2r max camshaft, Stage 3 Ported Heads (Manley Stainless steel values, titanium retainers, dual valve springs, bronze guides), Wiseco Forged Pistons, K1 Forged Rods, Clevite Bearings, Factory Crankshaft, Comp Cams rocker arm trunion kit, Morel 5315 lifters, JP performance single billet timing chain, Melling oil pump, Spec stage 3+ clutch and flywheel, BMR trailing arms, Nitto 555r 305/35/20. |
05-27-2017, 09:15 PM | #9 |
Injector
I doubt it is an injector.
I don't get to drive mine at time. Fuel can cause corrosion/rust on injectors and anything with moisture in it. Just an idea to feed thought. I think you will find it's a fairly minor issue but I have seen some crazy things. I wouldn't rule anything out. Good news is you caught it before you broke a piston or bent a rod. |
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05-27-2017, 09:18 PM | #10 | |
Drives: 2013 Camaro SS LS3 Join Date: Jun 2015
Location: Davenport IA
Posts: 718
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Quote:
Sent from my VS990 using Tapatalk
__________________
Romans 5:8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. -Fastlane Cold Air Intake, NPP cat back exhaust, Stainless Works LT Headers, 2r max camshaft, Stage 3 Ported Heads (Manley Stainless steel values, titanium retainers, dual valve springs, bronze guides), Wiseco Forged Pistons, K1 Forged Rods, Clevite Bearings, Factory Crankshaft, Comp Cams rocker arm trunion kit, Morel 5315 lifters, JP performance single billet timing chain, Melling oil pump, Spec stage 3+ clutch and flywheel, BMR trailing arms, Nitto 555r 305/35/20. |
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05-28-2017, 12:02 AM | #11 |
Drives: 2013 Camaro SS LS3 Join Date: Jun 2015
Location: Davenport IA
Posts: 718
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I found out after troubleshooting with the methods you guys suggested that I had my fuel solenoids channel on my NOS mini set to a 1 sec. Delay! Ouch! I fuel and nitrous on separate channels due to the amp drain of 4 solenoids since I'm running a direct port system.
I'm still trying to figure out why while n/a I'm 13:1 when before yesterday I was always 11.8:1. I don't want to spray again with new plugs until I sort that out. Any ideas? Sent from my VS990 using Tapatalk
__________________
Romans 5:8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. -Fastlane Cold Air Intake, NPP cat back exhaust, Stainless Works LT Headers, 2r max camshaft, Stage 3 Ported Heads (Manley Stainless steel values, titanium retainers, dual valve springs, bronze guides), Wiseco Forged Pistons, K1 Forged Rods, Clevite Bearings, Factory Crankshaft, Comp Cams rocker arm trunion kit, Morel 5315 lifters, JP performance single billet timing chain, Melling oil pump, Spec stage 3+ clutch and flywheel, BMR trailing arms, Nitto 555r 305/35/20. |
05-28-2017, 05:37 AM | #12 |
Fuel ?
Again there are so many variables.
Is it possible you got into some fuel that isn't consistent? Anything can throw off a wide ban. Exhaust leak maybe ? I'm guess the engine seems to be running fine, you just have a change in AFR. |
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05-28-2017, 03:30 PM | #13 | |
Drives: camaro ss\rs Join Date: Jun 2014
Location: Italia
Posts: 755
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Quote:
what data logger are you using?
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2014 camaro SS Whipple powered ,3.750 pulley,ID850, CAI,Flowmaster American Thunder exhaust,MGW racing shifter,Bo White ported tb,MightyMouse Catch Can,Vitesse throttle controller,GM 3.91 rear end, Dynatech longtube haders, BTR Pd cam,Fluidampr stock pulley,ZL1 fuel pump and ADM fpcm, Phastek scoop and fluid thank relocation Bmr Motor mount . Tuned by Mastuning
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05-28-2017, 03:37 PM | #14 |
Drives: 67RS Camaro ,Black 2013 ZL1 Join Date: Jun 2010
Location: Alberta
Posts: 1,408
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I'm surprised you needed to go to a 9 heat range.
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Tags |
bosch, nitrous, nos, ratio |
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