What happened to my PEAK HP?
05-19-2004, 04:06 PM
#1
Staging Lane
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What happened to my PEAK HP? I dynoed my car on the 150 shot and on motor.... i am attaching the graphs for both. The motor pass looks great, the way it should be. But the Nitrous pull peaks HP at 5k and just flatlines until 6400.....
That doesnt make sense to me, could someone explain to me how it happened?
Mods are ls6 intake,underdrive pulley,mac headers with 3" collectors, 3" y-pipe and bullets for a catback, CC 220/224 530/534 on a 112 LSA with 918 springs. Stock heads...shaved about .030"
Autotap numbers look good.
It did it on both my nitrous passes
Please help.
That doesnt make sense to me, could someone explain to me how it happened?
Mods are ls6 intake,underdrive pulley,mac headers with 3" collectors, 3" y-pipe and bullets for a catback, CC 220/224 530/534 on a 112 LSA with 918 springs. Stock heads...shaved about .030"
Autotap numbers look good.
It did it on both my nitrous passes
Please help.
05-19-2004, 04:13 PM
#2
Launching!
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well man.. i'm do not know a lot about these cars.
but IMO it looks like somethin is bein restrictive up top when u spray. its got enough flow n/a, but when u spray, it cant either 1, suck in enough air, or 2, let out enough air.
a cutout may open it up? or maybe a ported tb. somethin aint flowin enough.
nice numbers anyways though!
but IMO it looks like somethin is bein restrictive up top when u spray. its got enough flow n/a, but when u spray, it cant either 1, suck in enough air, or 2, let out enough air.
a cutout may open it up? or maybe a ported tb. somethin aint flowin enough.
nice numbers anyways though!
05-19-2004, 04:14 PM
#3
Originally Posted by SlowLS1
I dynoed my car on the 150 shot and on motor.... i am attaching the graphs for both. The motor pass looks great, the way it should be. But the Nitrous pull peaks HP at 5k and just flatlines until 6400.....
That doesnt make sense to me, could someone explain to me how it happened?
Mods are ls6 intake,underdrive pulley,mac headers with 3" collectors, 3" y-pipe and bullets for a catback, CC 220/224 530/534 on a 112 LSA with 918 springs. Stock heads...shaved about .030"
Autotap numbers look good.
It did it on both my nitrous passes
Please help.
That doesnt make sense to me, could someone explain to me how it happened?
Mods are ls6 intake,underdrive pulley,mac headers with 3" collectors, 3" y-pipe and bullets for a catback, CC 220/224 530/534 on a 112 LSA with 918 springs. Stock heads...shaved about .030"
Autotap numbers look good.
It did it on both my nitrous passes
Please help.
05-19-2004, 06:21 PM
#7
Everything looks good to me. Looks a lot like the graph of my nitrous passes. Nitrous power isn't going to climb like a NA graph. It's the initial hit of full power then pretty much stays a constant until you let out. There would be a few variables like bottle pressure and exhaust flow but the changes won't be major.
Jeffrey
Jeffrey
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05-19-2004, 08:32 PM
#10
Staging Lane
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Well if it is normal...i wont be concerned...i'd be curious to seem some of the nitrous dynographs if anyone has some they are willing to share....
Thanks!
Thanks!
05-20-2004, 09:27 AM
#11
What was your bottle pressure threw the pull.If your bottle pressure droped off that would explain the pwer loss and the fact that you went so rich.Take a full bottle and try it again.If it keep going that fat with atleast 1000 psi step down one size on the fuel jet.If im seeing the graph right you were running around 10.9 to 11.2 on air fuel.Thats your power loss.
Dave
Dave