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Boost Creep?

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Old Apr 10, 2006 | 06:53 PM
  #11  
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Kristian, this is strange considering that I have the same kit with no signs of boost creep. I will keep an eye on it tomorrow, but I am pretty sure that I am pegging 6psi all the way to redline. I'm glad that you finally got your car up and running, congrats bro! Those are some nice #'s, but I would be concerned with running almost 10psi all the time. BTW, if you get a chance can you please send me your map that you are using if your idle and cold start are working well for you. For some reason, when my car heats up and the coolant gets up to temp, my idle is jumping up past 2400 rpm! I don't know how the hell to fix it, but I definitely need to find a way to.
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Old Apr 10, 2006 | 06:54 PM
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I think the waste gate spring is working correctly since it stays at 7-7-5psi for about 1000 rpm but you could be right captain! I will give it try. The only thing that sucks is that I kind of like the feel of 384hp and at 7psi I will probably be around 340-350 I'm guessing.
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Old Apr 10, 2006 | 07:00 PM
  #13  
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Originally Posted by ex-eclipse,Apr 10 2006, 10:54 PM
I think the waste gate spring is working correctly since it stays at 7-7-5psi for about 1000 rpm but you could be right captain! I will give it try. The only thing that sucks is that I kind of like the feel of 384hp and at 7psi I will probably be around 340-350 I'm guessing.
Trust me I felt the same way. When I first got my car tuned it was creeping up higher than what I wanted. I then got that problem fixed and re-tuned at just 1 psi lower and I feel the difference in power and miss it




But I'd like to keep my power low and raise it little by little...not only cuz I want to keep it low so my clutch holds, but also so I get used to the car at increasing power levels rather than suddenly having A LOT of power...
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Old Apr 10, 2006 | 07:02 PM
  #14  
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I have the disease now, I am going to have to build the motor and rear end this winter!
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Old Apr 10, 2006 | 07:04 PM
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Originally Posted by XclusiveAutosports,Apr 10 2006, 09:53 PM
Kristian, this is strange considering that I have the same kit with no signs of boost creep. I will keep an eye on it tomorrow, but I am pretty sure that I am pegging 6psi all the way to redline. I'm glad that you finally got your car up and running, congrats bro! Those are some nice #'s, but I would be concerned with running almost 10psi all the time. BTW, if you get a chance can you please send me your map that you are using if your idle and cold start are working well for you. For some reason, when my car heats up and the coolant gets up to temp, my idle is jumping up past 2400 rpm! I don't know how the hell to fix it, but I definitely need to find a way to.
Yeah, I will send it to you. How come the tuner couldn't fix that?
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Old Apr 10, 2006 | 07:06 PM
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Originally Posted by ex-eclipse,Apr 10 2006, 11:02 PM
I have the disease now, I am going to have to build the motor and rear end this winter!
I feel the same way

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Old Apr 10, 2006 | 07:17 PM
  #17  
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Check the wastegate first then move from there. I just got finished with an LS-Turbo and the wastegate was bad. Same brand too. The number sounds about right for 9.7 on the WHP. My car (S2000) ran 450whp at 12.8psi. before I went hog wild on building things up (not cody's manifold). Cody's manifold shouldn't be the problem but if it is it will be a fluke on the wastegate position most likely. That is critical for the proper release of gas without creep. Well more to it than that but the basics.


-Chris
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Old Apr 10, 2006 | 07:22 PM
  #18  
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[QUOTE=ex-eclipse,Apr 10 2006, 10:04 PM] Yeah, I will send it to you.
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Old Apr 11, 2006 | 02:33 AM
  #19  
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Originally Posted by wannabuy,Apr 10 2006, 10:17 PM
Check the wastegate first then move from there. I just got finished with an LS-Turbo and the wastegate was bad. Same brand too. The number sounds about right for 9.7 on the WHP. My car (S2000) ran 450whp at 12.8psi. before I went hog wild on building things up (not cody's manifold). Cody's manifold shouldn't be the problem but if it is it will be a fluke on the wastegate position most likely. That is critical for the proper release of gas without creep. Well more to it than that but the basics.


-Chris
Thanks for the advice, I am going to try to move the angle of the waste gate and dump tube and see if that is restricting it enough to make it creep.
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Old Apr 11, 2006 | 07:24 AM
  #20  
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If you are running a 4" DP into a 3" cat back, it could be causing some of the boost creep. This is one reason why I stayed with the 3" DP. My wastegate has a 5.4 psi spring in it and I do boost creep up to around 6.2 and the boost fluctuates quite a bit between 5.5 and 6.2 psi above 7000 rpm. 1 psi or less of boost creep I would consider pretty normal, but what you are experiencing may be due to the 4" DP(if that's what you are using) and possibly a wastegate issue. Also, try getting a boost controller and see what happens. I would guess that after I get my boost controller installed it will cut my creep in half and keep the boost from fluctuating so much.
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