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*dynograph* am i safe to run nitrous?

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Old Mar 20, 2005 | 10:34 PM
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Default *dynograph* am i safe to run nitrous?

my air/fuel starts at 13.1 then 13.3 (im trying to read the dynograph) then starts going down to 12.1 then at wot looks like 12.3



am i safe to run 150 shot of nitrous?
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Old Mar 20, 2005 | 10:38 PM
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I think you should worry about getting that car tuned right OFF spray before you spray it.

What is done to your car? And what hack tuned it? (no offense meant)

It also depends on what nitrous kit you have. If it's wet, you should be okay simply by just upping the fuel jet a little too compensate for your already "earlY" lean condition.

If you have a dry maf kit, I'd be a bit more carefull although you "might" still be okay.

Last edited by 5.8litrels1eater; Mar 20, 2005 at 10:59 PM.
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Old Mar 20, 2005 | 10:57 PM
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Right you should be at about 12.6-12.8 or so at torque peak and then somewhere around 12.9-13.0 at peak RPM's. On the juice tune for 11.5:1 or so if spraying a heathy amount.
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Old Mar 20, 2005 | 11:24 PM
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Originally Posted by 5.8litrels1eater
I think you should worry about getting that car tuned right OFF spray before you spray it.

What is done to your car? And what hack tuned it? (no offense meant)

It also depends on what nitrous kit you have. If it's wet, you should be okay simply by just upping the fuel jet a little too compensate for your already "earlY" lean condition.

If you have a dry maf kit, I'd be a bit more carefull although you "might" still be okay.
never been tuned before, so i should take it to go get tuned? this is for a wetkit 150 shot.
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Old Mar 21, 2005 | 02:24 AM
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Originally Posted by violator3434
never been tuned before, so i should take it to go get tuned? this is for a wetkit 150 shot.
what are your other mods?
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Old Mar 21, 2005 | 09:26 AM
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Originally Posted by violator3434
my air/fuel starts at 13.1 then 13.3 (im trying to read the dynograph) then starts going down to 12.1 then at wot looks like 12.3
am i safe to run 150 shot of nitrous?
That doesn't look too bad, but question is was it done through CATS or with open exhaust?
A tune wouldn't hurt, but yes you can add the bottle onto what you've got now. Just run colder plugs and keep the coolant temp down below 200*F.
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Old Mar 21, 2005 | 11:49 AM
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Originally Posted by 5.8litrels1eater
what are your other mods?
lid, k&n, free ram air mod, ngk-tr6, taylor spark plug wires, and the cutout.

i put a cutout right after my passenger side's cats which i think caused me to lose 9 hp. so i gonna try and move it to the i-pipe. do you think this will change my air/fuel ration?
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Old Mar 21, 2005 | 12:04 PM
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Originally Posted by violator3434
lid, k&n, free ram air mod, ngk-tr6, taylor spark plug wires, and the cutout.

i put a cutout right after my passenger side's cats which i think caused me to lose 9 hp. so i gonna try and move it to the i-pipe. do you think this will change my air/fuel ration?

of course it will.
If the wideband was installed after the cats, then you cannot get an accurate A/F the engine is running at.
So I ask again, how was the A/F tested?
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Old Mar 21, 2005 | 12:26 PM
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Originally Posted by white2001s10
of course it will.
If the wideband was installed after the cats, then you cannot get an accurate A/F the engine is running at.
So I ask again, how was the A/F tested?
sorry i tottally just went around your question, it was after the cats. they stuck it in my cutout.
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Old Mar 21, 2005 | 12:48 PM
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Originally Posted by violator3434
sorry i tottally just went around your question, it was after the cats. they stuck it in my cutout.
well you can toss that graph in the waste-can.
You were probably running in the mid to bottom 11:1 AFR range,
and like I said earlier, you're fine to put the bottle on.
I highly suggest getting rid of the cats first.
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Old Mar 21, 2005 | 04:14 PM
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It's worthless to run a wideband after cats, and I think I am actually going to have to agree with white2001s10.
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Old Mar 22, 2005 | 06:05 PM
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did they stick the meter up past the cat, and just used ur cutout as an entry point? y would you have a cutout on only one side?
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Old Mar 22, 2005 | 07:27 PM
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Originally Posted by Phoenix57
did they stick the meter up past the cat, and just used ur cutout as an entry point? y would you have a cutout on only one side?
How do you push the probe through a solid material???? Cats are a honeycomb-like matrix, not an open chamber.
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Old Mar 24, 2005 | 02:46 PM
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I think he means his cutout is after his CAT.
Then the only thing he bypasses is the muffler.
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