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Cheap Antilag


vrfour_nz
Junior Member


Galant VR-4 org Post #: 925925 posted 08/27/10 05:26 AM     Remind Me!  Send Private Message   Edit Post      
I had a spare bypass valve from a Evo 7 that normally goes from pre- throttle intercooler pipe to exhaust manifold,and decided to plumb it in the same as the Evo 3 Group A cars had..using the EGR port that goes from beside the intake port through to the exhaust port on number 4 cylinder. I have also connected a normally closed relay to the ignition timing plug through a vacuum switch to retard the timing when it sees vacuum/decel. Heres a vid on the practice run at last Sunday's sprint of what it sounds like on the car. click
Haven't tryed out the open relay that pulses a coil on vacuum/decel & idle bypass yet due to blowing a piston last sunday..should be good flames on the way though .


Edited by vrfour_nz (08/27/10 08:47 AM)

Posts: 55 | From: Wellington,New Zealand | Member Since: 10/27/08 | IP: (218.101.84.10) | Report this post to a Moderator

mitsuturbo
Banthony
555/1000


Galant VR-4 org Post #: 925944 posted 08/27/10 09:23 AM     Remind Me!  Send Private Message   Edit Post      
I'm confused.
Is this cramming fresh air through the EGR system, or scavenging exhaust and dumping it into the intact tract?



92 GVR4 555/1000 11.41 @ 128.26mph
97 CBR900RR
2012 Hyundai Veloster

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curtis Galant VR4.org Moderator
Space Blanket from NASA plumbed into the attic
475/1000


Galant VR-4 org Post #: 925972 posted 08/27/10 11:01 AM     Remind Me!  Send Private Message   Edit Post      
I think the way these work it forces in fresh air in the exhaust which of course contains oxygen, this explodes in the manifold to keep the turbine spooled up beyond what it would be at a give at a give throttle position.



92 GVR4 0475/1000
Greenhouse Effect Green
Exceeds Mechanical Limits
"Put the dawg to work.
Ass, Gas or Milkbones. Nobody rides for free" Jon AKA Toybreaker

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JNR
5 star (English Professor) member Has extensive pop up picture book collection
20/1000


Galant VR-4 org Post #: 925983 posted 08/27/10 11:41 AM     Remind Me!  Send Private Message   Edit Post      
That's cool...how hard is it one the turbine blade and/or turbo bearings, or whatnot?

Posts: 9750 | From: ca | Member Since: 04/23/04 | IP: (12.234.232.130) | Report this post to a Moderator

vrfour_nz
Junior Member


Galant VR-4 org Post #: 926173 posted 08/28/10 09:10 AM     Remind Me!  Send Private Message   Edit Post      
factory turbine/shafts are great and take a beating,chinese knock offs don't. the turbine piston ring/seal is a custom higher tension one i make that i normally use in the group n rally evos. i use the later Evo 3 7cm exhaust housing with nickel to stop the cracking problem,but instead the nickel stuffs threads. i don't run water through the bearing body to stop the water boiling through heat soak of the exhaust housing. the bearings get replaced once a season(1000 racing kms)running 24psi.


Edited by vrfour_nz (08/28/10 09:16 AM)

Posts: 55 | From: Wellington,New Zealand | Member Since: 10/27/08 | IP: (218.101.88.76) | Report this post to a Moderator

mitsuturbo
Banthony
555/1000


Galant VR-4 org Post #: 927466 posted 09/02/10 05:56 PM     Remind Me!  Send Private Message   Edit Post      
Some years ago, i had a keydiver chip with NLTS set at 5500. I wired the timing ground to a pwr/eco switch, put the other side to ground, and took out the part of the switch that locks it down when depressed. Thus becoming a mom-switch, it became my timing retard for added spool up at speed (and sometimes at launch).



92 GVR4 555/1000 11.41 @ 128.26mph
97 CBR900RR
2012 Hyundai Veloster

Posts: 3528 | From: Near Seattle, Washington | Member Since: 06/02/08 | IP: (130.76.32.144) | Report this post to a Moderator

Andy_S
Overcomplicated


Galant VR-4 org Post #: 927475 posted 09/02/10 06:43 PM     Remind Me!  Send Private Message   Edit Post      
^What kind of results did it net? Any before and after spool numbers?



I found v8's...

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mitsuturbo
Banthony
555/1000


Galant VR-4 org Post #: 927681 posted 09/03/10 09:38 AM     Remind Me!  Send Private Message   Edit Post   
Well, it worked for me. I know that much.
Before the button, i couldn't make more than about 5-6psi off the stutter. This was good for launching, but more boost from a roll was where it was fun/useful. I could build about 12-14psi without a problem after grounding the timing out.



92 GVR4 555/1000 11.41 @ 128.26mph
97 CBR900RR
2012 Hyundai Veloster

Posts: 3528 | From: Near Seattle, Washington | Member Since: 06/02/08 | IP: (130.76.32.16) | Report this post to a Moderator


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