It sounds to me like your getting too much fuel. If it is bogging down then smoking tells me there is too much fuel. I am assuming that you have a wet kit am I right? If so, check to make sure that you are spraying NOS. If you arm the system and trip the WOT switch it tell the sylenoids to spray extra fuel and NOS at the same time and if for some reason the NOS is not spraying it is just going to dump a bunch of uneeded fuel to the throttle body making your car WAAAAY rich. Check that. Close the bottle and arm the system, check the sylenoids bye putting your hand on it and tripping the WOT switch. You will feel it click if it is working. I am gonna bet that is your problem. BTW get rid of those platinum plug with the n2o, bad combo. N2O does not like platinum, they react to one another. I just finished my NX kit and put motorcraft plugs in gapped at 35 with timing set @ 11 with 75 shot. Runs perfect. gonna jump to 100 shot tommorow then bye the end of the weekend shoot it with 150.
Your fuel pressure sounds fine by the way.
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