Running better
Thread Starter
Drifting
Joined: Aug 2010
Posts: 1,880
Likes: 4
From: Montgomery Texas
Running better
For some reason sense I started spraying my car I have noticed the engine has more power when I am not spraying, does this make any sense? It might sound crazy but it is true the car responds quicker and feels like it has more power. Am I just carzy or is there something to this?
Race Director
Joined: Sep 2001
Posts: 14,659
Likes: 749
From: NEwhere Ohio
For some reason sense I started spraying my car I have noticed the engine has more power when I am not spraying, does this make any sense? It might sound crazy but it is true the car responds quicker and feels like it has more power. Am I just carzy or is there something to this?
If you are spraying too much extra fuel, then you are running rich and I could imagine it'd be possible to be slower when spraying.
Youd have to be waaay rich, black smoke coiming out the back. etc.
The NX kit I had gave some recommended fuel nozzle jet sizes and recommended nitrous nozzle jet sizes.
The fuel jet size it recommended for a 100 shot was too conservative. I had to go down a jet or two to make the most power.
The biggest frustration for me with nitrous was how it made more power on a full bottle vs. a half empty bottle. Even if you heated that half-empty bottle up to the same PSI you sprayed at with a full bottle. It still would feel 'sluggish' compared to the punch from the full bottle. It was like making more power on a full tank of gas vs. a 1/4 tank of gas.
Racer
Joined: Aug 2009
Posts: 337
Likes: 6
From: Kanata ON
For some reason sense I started spraying my car I have noticed the engine has more power when I am not spraying, does this make any sense? It might sound crazy but it is true the car responds quicker and feels like it has more power. Am I just carzy or is there something to this?
Thread Starter
Drifting
Joined: Aug 2010
Posts: 1,880
Likes: 4
From: Montgomery Texas
I am running a nx wet system the only thing I can figure is maybe the engine had a bunch of carbon and I blew it all out spraying N2O. I have never had the half tank situation, I have a 15# tank and a heater.
Melting Slicks
Joined: Feb 2011
Posts: 2,322
Likes: 6
From: Los Altos CA
I'm way out of my depth here, but...
The fuel injection book I've been reading discusses how the computer adapts to driving conditions. As an example they mention that if you take a DD to the drag strip the performance will improve run-to-run as the computer adapts.
Maybe that's going on here?
The fuel injection book I've been reading discusses how the computer adapts to driving conditions. As an example they mention that if you take a DD to the drag strip the performance will improve run-to-run as the computer adapts.
Maybe that's going on here?
Racer
Joined: Aug 2009
Posts: 337
Likes: 6
From: Kanata ON
I'm way out of my depth here, but...
The fuel injection book I've been reading discusses how the computer adapts to driving conditions. As an example they mention that if you take a DD to the drag strip the performance will improve run-to-run as the computer adapts.
Maybe that's going on here?
The fuel injection book I've been reading discusses how the computer adapts to driving conditions. As an example they mention that if you take a DD to the drag strip the performance will improve run-to-run as the computer adapts.
Maybe that's going on here?
The main thing the computer learns is the AFR under different part throttle driving conditions based on the O2 sensor. However, nitrous is only engaged at WOT when the computer ignores the O2 sensor (in narrowband applications anyway) due to power enrichment.
I have never found my computer learns anything at the drag strip, and unless the car in question has a wideband O2 sensor I can't imagine how it could.
Jeff
Race Director
Joined: Sep 2001
Posts: 14,659
Likes: 749
From: NEwhere Ohio
I'm way out of my depth here, but...
The fuel injection book I've been reading discusses how the computer adapts to driving conditions. As an example they mention that if you take a DD to the drag strip the performance will improve run-to-run as the computer adapts.
Maybe that's going on here?
The fuel injection book I've been reading discusses how the computer adapts to driving conditions. As an example they mention that if you take a DD to the drag strip the performance will improve run-to-run as the computer adapts.
Maybe that's going on here?
Where is your inlet air temp? Are you spraying directly onto it?
Doing so can cause the computer just to dump fuel (run rich) because it thinks the air is extra dense (because its cold).
Relocate your IAT upstream of the nitrous nozzle if this is the case.
Thread Starter
Drifting
Joined: Aug 2010
Posts: 1,880
Likes: 4
From: Montgomery Texas
i thought of something else...
Where is your inlet air temp? Are you spraying directly onto it?
Doing so can cause the computer just to dump fuel (run rich) because it thinks the air is extra dense (because its cold).
Relocate your IAT upstream of the nitrous nozzle if this is the case.
Where is your inlet air temp? Are you spraying directly onto it?
Doing so can cause the computer just to dump fuel (run rich) because it thinks the air is extra dense (because its cold).
Relocate your IAT upstream of the nitrous nozzle if this is the case.
My N2O nozzle is right in front of the throttle body .
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Race Director
Joined: Sep 2001
Posts: 14,659
Likes: 749
From: NEwhere Ohio
Im not familiar with l98 and where the iat temp sensor is.
Make sure you are not spraying on it.
Btw I saw your post on how you are running 15 lb bottle, that would help wth seeing consistent power across an entire tank regardless of level.
I was running 10lb bottle (nx wet system) with heater and nx insulated jacket.
Make sure you are not spraying on it.
Btw I saw your post on how you are running 15 lb bottle, that would help wth seeing consistent power across an entire tank regardless of level.
I was running 10lb bottle (nx wet system) with heater and nx insulated jacket.
Racer
Joined: Aug 2009
Posts: 337
Likes: 6
From: Kanata ON
Im not familiar with l98 and where the iat temp sensor is.
Make sure you are not spraying on it.
Btw I saw your post on how you are running 15 lb bottle, that would help wth seeing consistent power across an entire tank regardless of level.
I was running 10lb bottle (nx wet system) with heater and nx insulated jacket.
Make sure you are not spraying on it.
Btw I saw your post on how you are running 15 lb bottle, that would help wth seeing consistent power across an entire tank regardless of level.
I was running 10lb bottle (nx wet system) with heater and nx insulated jacket.