dyno help ?????
#1
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dyno help ?????
a few months ago i dynoed my truck with the 100hp jets in.... at 4400rpm the graph drops from 396hp to 341hp real quick and my a/f goes from 12.2 to 9.75....my motor should be making power to 5300rpm .....could detonation be the problem ???? will detonation make the motor drop that much power and make the a/f pig rich .....bottle pressure was 1050 and i only had 92 gas in the tank........i have not been back to the dyno since but would like to redyno soon with the 125hp shot and 104 gas......what do you think???
heres the dyno sheet
http://mailcenter2.comcast.net/wmc/v...horsepower.jpg
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heres the dyno sheet
http://mailcenter2.comcast.net/wmc/v...horsepower.jpg
.
#3
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Originally Posted by sfj
were you running lean before the drop in power and then running rich or what but yeah detonation could definately cause loss in power
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I've never seen detonation change the a/f ratio on my wideband. Sounds like the power drop is due to being too rich. You need to figure out what caused the richness.
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Originally Posted by h777
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sorry guys i dont know why it's not working........but can any of you guys tell me what could make the hp drop at 4400rpm and went from 12.2 to 9.75 a/f....could this be from knock retard?????
hp at 4400rpm was 396 then dropped to 341hp real quick then gradually went up to 367hp at 5400rpm
hp at 4400rpm was 396 then dropped to 341hp real quick then gradually went up to 367hp at 5400rpm