Coyote nitrous drop off at higher rpms - Mustang Evolution

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Old 04-06-2015, 08:06 PM   #1
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Coyote nitrous drop off at higher rpms

Hi guys , just finished up my nitrous outlet install a couple weeks ago. So basic setup:
Nitrous outlet plate kit
Nitrous outlet bottle heater with pressure switch (1050psi setting)
Brand x purge
Nos window/tps switch
Nitrous outlet center console plate
NGK 1 step colder irridiums gapped at .035
100shot jets
Bama email tune for 100shot 93 oct for now

I can't get traction in 1-3 right now , I have drag radials sitting in the garage just waiting on my wheels to test it out

4th gear pulls so far seems like the nitrous hits very hard initially and seems to breakup/ lose power as rpms pass 5k I did datalog my pulls a bit and noticed 0degrees of knock through the entire pull.

Any nitrous gurus got any ideas? Maybe I need to recheck my gap? Spark blowout? Any input would be appreciated


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Old 04-06-2015, 08:18 PM   #2
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Oh and hi guys forgot to mention this is my first post lol


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Old 04-06-2015, 08:21 PM   #3
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Could be a couple of things.
1. Start with your system itself. Check your widow switch.

What do the plugs look like?

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Old 04-06-2015, 08:27 PM   #4
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I'll have to go do a nitrous pull again wednesday on my day off and pull the plugs right after. Window switch reads rpms correctly as it should , stage 1 is set at 3200rpms and shutoff is at 6500 tps is set on falling voltage and is on brown wire from throttle body, just did a tps sweep and watch voltage on the window switch , it falls correctly to the preset voltage. I always drive with traction control off so I don't think the ecu could be trying to close the throttle or anything and making the nitrous switch off or anything like that


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Old 04-06-2015, 08:29 PM   #5
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Also to note , i oriented the bottle per nitrous outlets instructions on direction , however the place that filled my bottle found a slight leak at the bottle valve and took it off , put Teflon paste on and reinstalled , maybe the pickup tube is oriented wrong and drawing less liquid nitrous as the pull starts ?


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Old 04-08-2015, 04:18 PM   #6
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Change ur gear ratios


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Old 04-08-2015, 04:21 PM   #7
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Car is on a factory 3.73, just feels like the power drops off for some reason. Gonna try to make a run then pull the plugs today


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Old 04-08-2015, 05:32 PM   #8
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Quote:
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Change ur gear ratios
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Old 04-08-2015, 06:37 PM   #9
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Change ur gear ratios


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Old 04-08-2015, 06:39 PM   #10
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Old 04-13-2015, 09:50 PM   #11
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Well I think I found the problem , bama turned my knock sensor off , found metallic specks on my plugs , talking with Shaun at aed right now . Working out If my motor is hurt or not


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Old 04-13-2015, 09:58 PM   #12
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Knock sensors being off is not necessarily a bad thing. But the tune needs to be spot on.

Mine have been off for awhile. Ever since my built motor

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Old 04-13-2015, 09:58 PM   #13
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Well unfortunately the tune was far from spot on based off what I saw on the plugs


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Old 04-13-2015, 10:02 PM   #14
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Well hate to say it. But
1. Thats what you get for running nitrous with a email tune IMO.

2. Trusting who you did to do the nitrous email tune

3. The NA tune should have been worked out with bama 110% b4 ever thinking about spraying

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Old 04-13-2015, 10:03 PM   #15
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Well unfortunately the tune was far from spot on based off what I saw on the plugs


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You went from stock tune to nitrous tune?? How many revisions Did you do?
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Old 04-13-2015, 10:04 PM   #16
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Coyote nitrous drop off at higher rpms

Yeah this is true , I guess I got sucked in by all the nitrous track videos they put out and I thought everything was ok because I was getting 0 knock in my datalogs and On my Na tune i did a few datalogs and asked when I saw no knock if the sensor was turned off and they said no

Also I didn't go from stock to nitrous , I had revisions with every modification I installed , I didn't feel the need to send in datalogs since the car wasn't exhibiting any sort of knock in the datalogs and all seemed good from what I was looking at. Obviously should have dug deeper , just placed trust where I shouldn't have


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