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Yeo
Zorce Jedi Master
Joined: 06 Apr 2005
Posts: 1936
Location: Far Rockaway, NY
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 Posted: Fri Feb 29, 2008 7:30 am Post subject: Evo X GSR problems |
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| RobEvo wrote: |
Vishnu post from the X A/F etc. + dyno.
"Observations:
-The X runs grossly rich under boost. So rich, in fact, that the engine bogs briefly between shifts at WOT. Really annoying.
-Power output is very sensitive to fueling as soon a AFR leans out from the 10-10.5:1 AFR range it usually runs in at full load. And it stays reasonably sensitive to enleanment even into the 12-12.5:1 AFR range. Something that wasn't the case with the 4G63.
-Engine still makes power in the presence of detonation events (which is not good of course). The 4G63 would behave differently by immediately yanking back several degrees of timing and 20-30lbft of torque. Not sure why the ECU in the X isn't as reactive to knock a the older ECUs. One interesting thing I noticed is that the tachometer movement becomes "sticky" when accelerating during audible knock activity. Haven't seen that before.
-Engine tends to detonation at fuel cut. We had to enrich and retard the last 300rpm prior to fuel cut to prevent this from happening. "
link:
http://forums.evolutionm.net/showthread.php?t=322616
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Sanctifier
Zorce Moderator
Joined: 07 Apr 2005
Posts: 1794
Location: Good question!
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| Posted: Fri Feb 29, 2008 8:09 am Post subject: |
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^ ^ ^ Ohh Ohh!... but early days yet with a brand new (pretty good) engine design.
Just like anything else they will have to shoot the ECU bugs until they get it right.
Most people buy cars "blind." They care more about appearance than about performance.
I wish  paid the same attention to the clumsy styling of the Evo X saloon and Sportback. 
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mitsu power
Looking for the Jedi base
Joined: 10 Jul 2005
Posts: 33
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| Posted: Mon Mar 10, 2008 5:24 pm Post subject: |
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^^ good reading really wish Mitsu get back to the basic..
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