high rpm miss
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high rpm miss
well guys i have a problem and need to figure it out. just had the car tuned and dynoed. what is happening is in 2 spots 4500 rpm it falls a little and the a/f goes from 12.8 to 13.3 and at 6000rpm a/f goes from 12.9 to 13.4 it falls flat like a dead cylinder you can here it in the exhaust like a rev limiter, can feel it to. it is not vavle float i would see it in the graph like a waterfall effect but it just falls flat -30hp and flat lines. the guy who tuned my car knows what he is doing and the a/f it perfect across the board. i am not pulling any timing anywhere in the pulls or anything, no knock nothing. tomorrow i am going to change out some coils it is the only thing i can think of. i have brand new plugs tr6 gaped at .35, new wires (which i am going to change again just to change ) and hopefully will fix it. any other thoughts? by the way it is a ls1 thx mike
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the af ratio does not change due to the tune I saw the screen as it was making pulls
it changes due to something else
this car just drops 30-40hp like a rock at exactly 6k it drops so fast it follows the vertical line on graph that is the 6k mark.....strangest **** in the world the car pulls strong and then hits 6k and
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i think i might have figured it out. i found that i am running to long of pushrods ( 7.350 ) and i need to be running ( 7.325 ) hopefully that will fix the issue. crossing fingers