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5500 rpm car misfire at 550hp

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Old 05-15-2012, 08:47 PM
  #61  
zach711f
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Thanks. I'm glad it was a simple problem. Soon as I get back from Vegas I can go pic the ***** up
Old 05-18-2012, 01:58 PM
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binder
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Originally Posted by zach711f
Ok so it ended up being the coil packs that were bad. They swapped em out and there is no more misfire. Final dyno numbers were. 565 whp and 580tq at 17 psi. I told them to hold off on taking it any higher until I get a twin pump and more injector even though there was room to go. Il post dyno sheet later when they email it to me.
i can't remember, is this pumpgas? If so you won't have much more room to go without having detonation issues.

and i'm glad it was an easy problem. 9 times out of 10 it's a part that has gone bad. Stock ignition system is plenty strong. I'm still skeptical that some people have issues with it in the 500hp range and "need" an ignition booster. I would bet if they put brand new coil packs in their issue would resolve instead of just forcing the coil packs to work harder when they are damaged.
Old 05-18-2012, 03:21 PM
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Originally Posted by binder
i can't remember, is this pumpgas? If so you won't have much more room to go without having detonation issues.

and i'm glad it was an easy problem. 9 times out of 10 it's a part that has gone bad. Stock ignition system is plenty strong. I'm still skeptical that some people have issues with it in the 500hp range and "need" an ignition booster. I would bet if they put brand new coil packs in their issue would resolve instead of just forcing the coil packs to work harder when they are damaged.
I'm running e-85 to make those numbers. I'm going to get a twin pump setup soon to be on the safe side and a possible bigger turbo housing to get a Lil more out of it. I figured it be something small as well. When things don't go right I get parinoid quick and think of the worst.
Old 05-18-2012, 03:32 PM
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binder
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ah, e85 will turn out very nice with more boost
Old 05-18-2012, 03:35 PM
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It sucks because theres only 3 pumps I can go to in rapidcity lol but I only drive the car 4 months out of the year here lol.
Old 05-18-2012, 04:46 PM
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binder
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not many around here either. All you need is 1 station though...when a local one shut down i started driving 10 minutes just for fuel.

I have a 15 gallon tank with pump hose on it for backup though. Haven't needed to use it yet.
Old 05-18-2012, 05:37 PM
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The trip back from Denver will be fun. Gunna throw 4 cans in the back of the truck following me
Old 05-19-2012, 10:31 AM
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just start searching for places. I always plot out my stations when going on long trips.
Old 05-19-2012, 01:22 PM
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theres alot of nothingness out there..lol
Old 05-21-2012, 08:54 PM
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Just got a steal of a deal on a cjm twin pump. 600 shipped.
Old 05-26-2012, 11:18 AM
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Originally Posted by zach711f
Just got a steal of a deal on a cjm twin pump. 600 shipped.
new?! whole setup or just the pump?
Old 05-26-2012, 06:59 PM
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final numbers for now..more when i get my twin pump installed that just came in yesterday.
Old 05-27-2012, 06:44 AM
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If you haven't already, disable knock control before the next tuning session.
Old 05-27-2012, 07:45 AM
  #74  
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what fuel are you using? that's some high hp for a gt35r
Old 05-27-2012, 08:50 AM
  #75  
str8dum1
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is your boost holding steady to redline? who told you you are going to make more power with a twin pump?

You can already see that the turbine is pretty close to maxed out on how your trq takes a total nosedive. It doesnt even hold flat trq for 200rpms.

I'm interested into the miracle your tuner is gonna perform.
Old 05-27-2012, 09:27 AM
  #76  
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I'm going to try the bigger housing for the turbo as well to make more power. But honestly after driving the car I don't even care anymore. Jut Gunna leave it alone. And it's on e85 binder. And I don't like that tq curve either not sure Mabey it's time for a big boy turbo kit. (twins)
Old 05-27-2012, 09:31 AM
  #77  
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duh, i just saw it's e85. In all honesty if you aren't going lean now you have plenty of fuel and i wouldn't mess with the system. You are pretty much maxed for a gt35r so I would leave it alone and just be happy. The amount you "might" gain won't be worth the added expense and complexity in the system.

Which single pump is this? the new walbro?
Old 05-27-2012, 12:26 PM
  #78  
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No it's the aeromotive 340
Old 05-27-2012, 01:30 PM
  #79  
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ya, turbine housing probably won't fix the drop off in tq. The turbo is just done. I wouldn't scrap the system for a twin turbo setup unless you are planning on really running more power. All that money lost just for 50hp or so wouldn't be worth it. Coming from someone with a 650hp car it's not useful. On the street i keep the boost turned down below 600hp because even with my 305 mickey drag radials i'm spinning through 3rd gear. if you plan on using the extra power on the track then you might benefit but for street purposes it's a waste. That's why i'm switching to a smaller turbo. I have so much on the top end i'm not using so i'm reducing the size so i can have the power i want and carry it longer.

You could just upgrade to a gt37r without wasting a bunch of money to get some extra power.
Old 05-27-2012, 04:28 PM
  #80  
zach711f
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I've decided I'm Gunna leave it alone. It's good enough for me. Now I can do some body work and paint. Mabey some better coils. Bc's don't drop for **** in the rear learned that the hard way.
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