How to retard timing....
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,577
Likes: 3
From: Southern Maryland Maryland
How to retard timing....
What can I do to retard timing while I am at the track on nitrous? I really dont want to have to load a new program for nitrous. Is there any way I can program the timing table to retard the timing on nitrous? Maybe trick the air temp sensor?
Phillip
Phillip
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
You can use a relay and a resistor in the IAT circuit.
In normally closed state of the relay the IAT signal is fed to the computer..When you the Spray is inabled, the other pole of the relay contains a resistor, and that is switched ot the computer.
20ohms will give you a tone of retard, you can play with it to get the right amount by logging with auto tap till you get the amount you want.
In short, its telling the computer is screaming hot out and the calibration of timing retarf vs IAT is manipulated.
The table comes into play at 40 degrees C
Phil
In normally closed state of the relay the IAT signal is fed to the computer..When you the Spray is inabled, the other pole of the relay contains a resistor, and that is switched ot the computer.
20ohms will give you a tone of retard, you can play with it to get the right amount by logging with auto tap till you get the amount you want.
In short, its telling the computer is screaming hot out and the calibration of timing retarf vs IAT is manipulated.
The table comes into play at 40 degrees C
Phil
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Phil, there is a module designed specifically for doing this. It's virtually pnp and is programmable. I forget the name of it but I'll see if I can find it and get back with you.
Edit: Call Nitro Dave's (866.648.7637) and ask for their Timing Tuner. It taps into the crank harness and allows you to run N2O timing only when you want it. Here's the link.
http://www.nitrousoutlet.com/
Edit: Call Nitro Dave's (866.648.7637) and ask for their Timing Tuner. It taps into the crank harness and allows you to run N2O timing only when you want it. Here's the link.
http://www.nitrousoutlet.com/
Last edited by Patches; Aug 22, 2004 at 07:04 PM.
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
I am running a Timing Tuner from Ramcharger. It works great. It also allows you to set some other parimeters such mimumum and maximum activation and cut-off. It even lets you add to your base timing if you are so inclined 
Melting Slicks
Joined: Apr 2003
Posts: 2,285
Likes: 16
From: Nashville TN
Originally Posted by BOTTLE FED
I am running a Timing Tuner from Ramcharger. It works great. It also allows you to set some other parimeters such mimumum and maximum activation and cut-off. It even lets you add to your base timing if you are so inclined
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,577
Likes: 3
From: Southern Maryland Maryland
Here's what I am going to do.....
Wire a relay hooked to the nitrous relay, when the nitrous activates the temp relay will activate. The temp relay will be normally closed and go to the IAT sensor, once the temp coil activates it will go to a plug in resistor. I am going to reprogram the ECU so under very hot conditions(Resistor) it will retard 5-7 degrees. Make any sense?
Phil
Wire a relay hooked to the nitrous relay, when the nitrous activates the temp relay will activate. The temp relay will be normally closed and go to the IAT sensor, once the temp coil activates it will go to a plug in resistor. I am going to reprogram the ECU so under very hot conditions(Resistor) it will retard 5-7 degrees. Make any sense?
Phil
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