Proposed setup for nitrous system...need some advice/clarification
Thread Starter
Joined: Jun 2002
Posts: 669
Likes: 1
From: Amarillo, TX
Proposed setup for nitrous system...need some advice/clarification I am going with a Dynotune wet kit.
I will be using a timing tuner to pull timing and a scanmaster to monitor for knock. I am wanting to run a maximum of 150 but am going to start with 50, 100 then 150 just to make sure everthing goes well, since this will be my first time using nitrous. I will be using TR6 plugs. I wanted to get an idea from those who have used the timing tuner as to how much timing you have pulled. My car has a good N/A tune with A/F at 12.8 at 6300rpm(I shift at 6400rpm) and wanted to make sure that pulling timing would be all that is necessary since I can't adjust the fuel tables without another tune. I believe 1 1/2 degrees per 50hp is what I read to be safe.
Does this sound like a good/safe way to do it?
Any other experience or helpful hints would be greatly appreciated.
Thanks, James.
I will be using a timing tuner to pull timing and a scanmaster to monitor for knock. I am wanting to run a maximum of 150 but am going to start with 50, 100 then 150 just to make sure everthing goes well, since this will be my first time using nitrous. I will be using TR6 plugs. I wanted to get an idea from those who have used the timing tuner as to how much timing you have pulled. My car has a good N/A tune with A/F at 12.8 at 6300rpm(I shift at 6400rpm) and wanted to make sure that pulling timing would be all that is necessary since I can't adjust the fuel tables without another tune. I believe 1 1/2 degrees per 50hp is what I read to be safe.
Does this sound like a good/safe way to do it?
Any other experience or helpful hints would be greatly appreciated.
Thanks, James.
Last edited by Dr. Jeckel; Feb 6, 2007 at 01:29 PM.
What is your timming at now? Im assuming with the cam you already have acustom tune. Standard rule of thumb for a 150 shot will be about 4 degrees. As far as adjusting airfuel you can do so by changing out the fuel jet. You will not need a custom tune.
Dave
Dave
Thread Starter
Joined: Jun 2002
Posts: 669
Likes: 1
From: Amarillo, TX
Thank you for the help. It is greatly appreciated!!
Yes I had it dyno tuned. I am not sure what the timing is set at, but I'm sure i could get Jason to check it out for me.
I just wanted to hear from someone with alot of nitrous experience or has run the timing tuner, that infact just retarding the timing would be fine.
Like I said I will be going with a small shot at first and checking for knock as I go to a higher shot.
I have a friend who is running the stock fuel pump with near identical rwhp numbers on an MS3 cam and 150shot. He had it dyno tuned with the nitrous and A/F ratio was 11.5, which suprised me.
Anybody else had a similiar setup where the stocker is holding up well?
I thought the stock fuel pump wasn't good over about 450rwhp
Also I plan to do a walbro 255 with hotwire kit, but thought it was interesting his is doing fine and has been for well over a year now.
Yes I had it dyno tuned. I am not sure what the timing is set at, but I'm sure i could get Jason to check it out for me.
I just wanted to hear from someone with alot of nitrous experience or has run the timing tuner, that infact just retarding the timing would be fine.
Like I said I will be going with a small shot at first and checking for knock as I go to a higher shot.
I have a friend who is running the stock fuel pump with near identical rwhp numbers on an MS3 cam and 150shot. He had it dyno tuned with the nitrous and A/F ratio was 11.5, which suprised me.
Anybody else had a similiar setup where the stocker is holding up well?
I thought the stock fuel pump wasn't good over about 450rwhp
Also I plan to do a walbro 255 with hotwire kit, but thought it was interesting his is doing fine and has been for well over a year now.
I would upgrade the fuel pump for anything over a 100 hp. Or atleast watch the fuel pressure. If the fuel pressure drops and strugles to recover when the nitrous comes in you are running out of fuel pump.
Dave
Dave
