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Old 12-20-2004, 08:15 PM   #1
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Nitrous Baseline Tuning

hi guys i just got my nitrous kit in today its the Nitrous Oxide System Power Fogger. I wont be putting it in for a little while because i live in wisconsin. but i was just wondering im looking at doing a 50 shot or a 75 shot. i was just wanted to know what jet sizes for the fuel and for the nitrouse i needed to put in the nozzle. and i do not have any access to a dyno and i was just looking form some ideas on how to go about tuning the nitrous properly. thank you for your time.

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Old 12-21-2004, 03:17 PM   #2
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there is only one way to tune nos if you don't have a dyno. You need to run it with nitrous and then look at your plugs. If there is a reddish color and small cracks in the white part by the electrode, you need more gas, and if possible less timing. As far as jet sizes goes, with 43 psi of fuel pressure you should use #38 N #26 G. There is one problem though. Our fuel system is not a return style, so our feul pressure changes to compensate how much vaccume is pulling fuel out of the injectors. Two things you can do 1: use a bigger, about #32, gas jet, 2: I have not tried this yet, but if you unplug the vaccume line from the sensor on the fuel rail and plug both ends you should have 39.5 psi at all times. This will also help to keep from burning pistons since the motor will still be sucking fuel from the injectors.
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