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: 14,678
Likes: 751
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: 14,678
Likes: 751
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
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: Sep 2001
Posts: 14,678
Likes: 751
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.