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06 Tribeca
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Discussion Starter · #41 · (Edited)
about modified valve body - I wrote a bit here - Tuning 5EAT
it is from Russia - [email protected] For 5EAT he has like stage 1, 2, 3. (For Tribeca he suggests stage 0.5 - for me it was a bit enhanced, so - 0.5+ :DDDD ) Guy has reputation - has tuned (I believe) all variations on 4EAT, both generations on 5EAT (also has done 5EAT "relatives" on Infiniti) - may be something else which I am not aware of.

HexMod worked only on TG5C (as far as I have read). I really like his posts.

Stall in torque convertors - I consider myself more like "time attack/sprint" guy, not really drag practitioner :))) (though as a testing procedure - pretty good). So - I value more responsiveness.

Suspension tuning - since I am not your average "soccer mom" in Tribeca, I want it to behave more "sportiish" - so, some adjustability might be useful. for nonadjustable setup - I would have went with Bilstein B6 (if those were available, even stinking nissan rogues have B4, B6, B8... but not tribeca)... Anyway, I will make cad drawings of struts and at some point of boredness will try to find something matching from other cars :D Now - I have ability to "grab" custom spring rates and 20click adjustability (rebound) on shocks. According to Flatout Suspension - it is possible to rebuild them on your own or you can send struts to them to rebuild with different valving.

Deleting AVCS does not give any power. it just shows that "deleter" has either low intellectual abilities, or VERY specific requirements(which, to be honest, I can't really think of). It is technological step "backwards". A long time ago - when guys tuned engines - when they couldn't get camshafts with "sportier" profiles - they made vernier pulleys, to rotate camshaft relative to crank thus moving peak up or down (as they wanted/needed).
Novadays - AVCS allows to do that by punching in numbers in maps and there is no need to get your hands dirty, do wrenching for 4hours to get to the point where you can test your setup...

About SUBARUs intentions -EZ30D(or how some prefer to call it EZ30R) - power per liter is ~81.(6)hp/liter. EZ36D - it is just 71.(6)... Other N/A Subaru engines - FB25 (way more modern than H6) is 72.8hp/liter. EJ25 even less...FA20D (brz engine < 2017) is 98.5hp/liter, 2017+ it is 102.5 hp/liter.
So - at least 3.0 liter engine in Tribeca is a tiny bit sportier than all the rest, but still not as sporty as BRZ engine :D
There are rumours that EZ30D was developed together with Porsche people (though - I haven't read it in any reputable source...may be again - bad researcher :D ).

About COBB - you mean their kit for Tribeca in 2006? 2006 Cobb Tuning Subaru Tribeca - Performance Tuner Road Test - Motor Trend - it is technologically the same as Raptor-s (centrifugal type). but I like their shortened intake pipe (probably Subaru-style hood with opening above filter would be helpful too :D
unfortunately - not much technical details :(
Pardon, but I am not stating that by just deleting AVLS/AVCS this will "give" you power.
Rather, I am stating that by deleting them you can now enhance your cams/valves where you couldn't before.
Our cam shafts are hollow and thus cannot be ground...
So when wanting power from cams on EZ's they must be milled from scratch from solid billet blocks.
Once at this point the cams are massive and the head needs to be milled to allow then to even rotate.
Therefore, AVLS or AVCS cannot retained.
You then have a cam that can be adjusted by cam gears.
You also gain massive lift and duration that AVLS/AVCS cannot ever achieve.
Furthermore, oil pressure doesn't need to be used.
A huge benefit is allowing for incredible strength and needless to say achieve higher RPM ceiling.

Beyond all of that jargon - the valve train is simplified and with that 1) the weight is significantly decreased 2) it's stronger. My engine has both AVLS/AVCS deleted and custom cams/valvetrain to now run up to 9,000RPM safely.
 

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V6er Version 2
Facelift (EZ36D, 5EAT TG5D), MY2008, 7seat Limited (no DVD, no NAVI)
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2014 Subaru Tribeca
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29 Posts
Just got around to reading this thread - cool to see where this is going.

What are you plans for the exhaust? I saw you... liberated... the muffler section, wondering if you are just going to keep it cut or run side pipes or what?
 

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V6er Version 2
Facelift (EZ36D, 5EAT TG5D), MY2008, 7seat Limited (no DVD, no NAVI)
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474 Posts
in whole topic i couldn't find anything about exhaust cutting....
about me - I did some cutting to fit "fantastic" stuff from Walker... and after ~6month replaced that **** with OEM part (should have done it in first place :D
 

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2014 Subaru Tribeca
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in whole topic i couldn't find anything about exhaust cutting....
about me - I did some cutting to fit "fantastic" stuff from Walker... and after ~6month replaced that **** with OEM part (should have done it in first place :D
I was looking at the first pics from @BENI6N and the exhaust was cut, assuming for added clearance
 

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V6er Version 2
Facelift (EZ36D, 5EAT TG5D), MY2008, 7seat Limited (no DVD, no NAVI)
Joined
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474 Posts
aaah... found the picture you meant... I would like to do custom rear mufflers too... for higher rear "approach angles" (I don't like side view when rear mufflers "stick out"). :D
 
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