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Back firing after nitrous pass help

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Old 05-19-2014, 09:01 AM
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Default Back firing after nitrous pass help

So I just finished my nitrous kit install and am having a problem with it after it's done spraying. The car is a 2000 camaro with mods: yank 3600ss, 3.42 gears, headers, tsp duals, ls6 intake. The nitrous kit is a brand x bottle and solenoids with a dynotune 78mm plate. I am using an lnc2000 to pull 4* of timing for the 100 shot on a micro switch for wot and an msd window switch. The car feels good when it hits the window and sprays up until I let off. After I let off and am coasting and applying the brakes it back fires some. Currently running br7ef plugs and a 52n and 33f jet as per the dynotune recommendations. This is my first vehicle with nitrous and was hopeing someone would know a little of what's going on and if I should be worried about it.
Old 05-19-2014, 10:00 AM
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Rich backfire.

Lower your fuel jet several sizes.

Learn how to read plugs and get a wideband as well.
Old 05-19-2014, 12:19 PM
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That's what I thought it was. How many sizes do you recommend dropping it off as a good starting point? I'll try reading the plug just little paranoid living 45 min away from the strip and having to test ok back roads.
Old 05-19-2014, 08:43 PM
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I believe that plate is a copy of the nos plate and there jetting seems fat as well. A 28 would seem to be a better starting point to me. Just for reference my buddy runs the nos plate on 63 36 which is probably a little fat as well, but nos recommends 63 38 which seems very fat.
Old 05-20-2014, 03:25 PM
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I'll drop it down to a 30 and check the plugs this weekend and go from there. At first it freaked me out since it was my first time spraying.
Old 05-20-2014, 03:51 PM
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Originally Posted by Kwikasfaki
I'll drop it down to a 30 and check the plugs this weekend and go from there. At first it freaked me out since it was my first time spraying.
Sounds like a rich condition. A fresh set of plugs will tell you alot also.

-Garrett



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