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Part II: Evo X Tuned

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Old Feb 10, 2008 | 11:42 AM
  #121  
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Originally Posted by nebolic
just curious, looking at a completely stock X ecu on the dyno, have you noticed a sudden decrease in power around 6k to 7k rpm? what is this due to and why is it happening on a stock x?

nebo
I think theres probably too much timing up top, for 91 oct.

On another note, you already have those threee works mods doen to your X??
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Old Feb 10, 2008 | 11:49 AM
  #122  
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From: sacramento
Originally Posted by Evo_Kid
I think theres probably too much timing up top, for 91 oct.

On another note, you already have those threee works mods doen to your X??
yes sir, i will post the dyno graphs, baseline, with filter, with filter and muffler as soon as i get the gif files.

car is exactly 2 weeks old

I have a modding addiction.

New wheels to go on in the next week or so or whenever the vendor can get a hold of the wheels for me.




nebo
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Old Feb 10, 2008 | 03:46 PM
  #123  
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Whats the GFB again?
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Old Feb 10, 2008 | 03:52 PM
  #124  
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Originally Posted by Evo_Kid
Whats the GFB again?
Go Fast Bits BOV.

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Old Feb 10, 2008 | 04:16 PM
  #125  
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Originally Posted by razorlab
Go Fast Bits BOV.

I though that, but was making sure.

Now next question, why did you replace the DV?? Isnt the X DV the same as the IX DV, which is perfectly fine unless boosting 24+lbs??

Not trying to hate just asking.
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Old Feb 10, 2008 | 04:38 PM
  #126  
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Originally Posted by bfdd
Just pointing out that aluminum transfers heat a LOT better than iron. So that heat you're bringing up doesn't really matter till it surpasses the limit where the effectiveness of aluminum vs iron heat dissipiation is crossed. So if aluminum, pulling this outa my ***, is twice as effective at transfering heat than iron, it could essentially take twice as much heat to cause any real problems.
Not necessarily since damage will most likely occur to an aluminum block at lower temperatures then it would to an iron block. Even though aluminum is a better platform for heat transfer the gradient of temperature is what matters when there is a sudden pre-ignition, knock etc...
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Old Feb 10, 2008 | 05:32 PM
  #127  
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Originally Posted by nebolic
just curious, looking at a completely stock X ecu on the dyno, have you noticed a sudden decrease in power around 6k to 7k rpm? what is this due to and why is it happening on a stock x?

nebo
I didn't see this at all; my car pulled cleanly to the rev limiter on the dyno. You can see that here: https://www.evolutionm.net/forums/sh...5&postcount=68

Power was solid from 5600 until the car hit the rev limiter, which is what you see at the drop up top.

Can I ask again that we at least try to keep the thread at least a little bit on topic?
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Old Feb 10, 2008 | 05:37 PM
  #128  
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Originally Posted by Noize
I didn't see this at all; my car pulled cleanly to the rev limiter on the dyno. You can see that here: https://www.evolutionm.net/forums/sh...5&postcount=68

Power was solid from 5600 until the car hit the rev limiter, which is what you see at the drop up top.
Both X's on 91 that we have had on our dyno have this drop. Feels like knock and the actual throttle closing as well as the revs get "sticky".

You can see these drops here:

https://www.evolutionm.net/forums/sh...23&postcount=1

and here:

https://www.evolutionm.net/forums/sh...00&postcount=1

And yes, let's get back on topic.
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Old Feb 10, 2008 | 05:49 PM
  #129  
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From: sacramento
Originally Posted by Noize
I didn't see this at all; my car pulled cleanly to the rev limiter on the dyno. You can see that here: https://www.evolutionm.net/forums/sh...5&postcount=68

Power was solid from 5600 until the car hit the rev limiter, which is what you see at the drop up top.

Can I ask again that we at least try to keep the thread at least a little bit on topic?
yes sir, trying to keep on topic as much as possible but since i am experiencing symptons on a stock car whereas it is feeling like timing being pulled, am curious if Shiv is seeing the same thing and if he dialed that piece in and also if he found out the reason for it.


nebo
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Old Feb 10, 2008 | 05:54 PM
  #130  
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From: sacramento
Originally Posted by Noize
I didn't see this at all; my car pulled cleanly to the rev limiter on the dyno. You can see that here: https://www.evolutionm.net/forums/sh...5&postcount=68

Power was solid from 5600 until the car hit the rev limiter, which is what you see at the drop up top.

Can I ask again that we at least try to keep the thread at least a little bit on topic?
what octane are you running? we only get 91 here in cali.

nebo
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Old Feb 10, 2008 | 08:21 PM
  #131  
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Originally Posted by 34Turbo
Not necessarily since damage will most likely occur to an aluminum block at lower temperatures then it would to an iron block. Even though aluminum is a better platform for heat transfer the gradient of temperature is what matters when there is a sudden pre-ignition, knock etc...
I wasn't argueing the strength of iron vs aluminum. Just that aluminum cools faster due to being far more effiecient dissipating heat. That should let it handle slightly more heat up untill it's weakening point you know.
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Old Mar 17, 2008 | 10:26 AM
  #132  
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Damn, nice work Shiv!
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Old Mar 23, 2008 | 03:58 PM
  #133  
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Can you just confirm what pre-ignition has to do with knock ???

Maybe you were thinking about det ???

Pre - ignition is something very different

Happy Easter guys
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Old Mar 23, 2008 | 07:33 PM
  #134  
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Very nice thread Shiv. I've noticed that there aren't a lot of photos? How come?
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Old Mar 24, 2008 | 10:01 AM
  #135  
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LOL pre-ignition, also called pre-detonation or just detonation, is the cause of knock...just fyi...to all the "experts" who don't know that lol.
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