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Old 04-19-2017, 09:31 AM   #776
arghx7
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looks like the tuner took out the high overlap for fuel economy up to 3200rpm.
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Old 04-19-2017, 12:24 PM   #777
mrsaturn7085
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Chances are they took the aggressive spark advance out of the cruise portion of the map, as well. These two changes are why many people get ~10 mpg after a tune.
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Old 05-01-2017, 04:52 PM   #778
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Mine was telling me the TGV Deletes was the reason for my bad fuel economy. But he pulled a lot of AVCS advance out in the cruising area. Down to like 15. I should look at the ignition advance in the cruising area as well. Stuff like this is why I started teaching myself.

No where and I mean No where did I find anyone ever saying TGV Deletes on an EJ will hurt fuel economy. I searched high and low. I mean how do the JDM Subaru (Yes I know the 207 is a different motor) get along just fine.
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Old 05-01-2017, 05:12 PM   #779
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Quote:
Originally Posted by Delphi View Post
No where and I mean No where did I find anyone ever saying TGV Deletes on an EJ will hurt fuel economy. I searched high and low. I mean how do the JDM Subaru (Yes I know the 207 is a different motor) get along just fine.
TGV's only help on cold start to control emissions (hence their use in the US). They are pretty much useless otherwise. There is no reason anyone should loose MPG from them alone.
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Old 05-02-2017, 10:24 PM   #780
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Default Dual AVCS Cosworth S2

thanks for all informations !

what do you recommend using for Cosworth AVCS cams S2? (in my sti 08 Dual AVCS for GTX3582 GEN2)

the specs are

Int 278 Degree, 10.74mm Lift
Exh 274 Degree, 10.0mm Lift


I couldn't find much data on, how much i can do for better and for max ?
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Old 05-03-2017, 05:23 PM   #781
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Quote:
Originally Posted by dplancy View Post
thanks for all informations !
what do you recommend using for Cosworth AVCS cams S2? (in my sti 08 Dual AVCS for GTX3582 GEN2)
the specs are
Int 278 Degree, 10.74mm Lift
Exh 274 Degree, 10.0mm Lift
I couldn't find much data on, how much i can do for better and for max ?
Tuning them basically follows the same lines as any other AVCS tuning. I have the same 04 STI heads (no exhaust) in my built motor. All depends on when your car is making boost by.

I hope you have enough fuel! With mine running a 52lbs/min turbo, I ran our of injector at 18PSI. Then again, I have smaller injectors (850cc).

If you need help, feel free to PM
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Old 05-04-2017, 12:04 PM   #782
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thanks for your answer.

For me I have small injectors too (1000cc), I think to buy next month 2000cc ID

For the tune, I thought I had a good starting point or angle errors to avoid not to hit the piston.

Thank you very much, I will try some adjustments and I contact you soon
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Old 03-01-2018, 09:31 AM   #783
BrucesOutbackXT
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Default AVCS tuning Mileage & Power.

Cam timing is a degree of cam = 2 degrees on the Crankshaft.

Taking notice on the two stock valve timing maps on AVCS Cruise and non Cruise.

Max out in area's on Both at 40* advanced but much less on the Non Cruise settings.
Hence you looking at where the power settings are on the non cruise.

You can see were the Cruise map is choking you engine out with EGR blowing into the engine.

If we know what the physical advertised or actual duration of the cam is then we could come up with some very interesting programing to get the full benefits of the (AVCS) programing of your engine.

I have made one map with only adjusting the Cruise settings lowered the advance settings a bunch and gained highway mpg to 27.4 on a 14 mile run reset mpg counter and put cruise on 70 mph. ( max advance was 14 degree)

Noted on this map at 80 mph it seemed to get hunger pains on the gas tank but still better than stock settings.



Were talking on a 2008 Outback XT Limited Automatic.

My Wife's 2011 Outback 2.5 L non turbo gets 30 mph @ 80 mph all day long.

Noted though gearing with her six speed trans gets a reduction in 500 RPM over my XT.
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Old 03-01-2018, 05:18 PM   #784
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speaking of avcs

don't know if anybody noticed, but tomei posted recommended values for dual avcs engines



its on their website under cams
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Old 03-02-2018, 06:06 PM   #785
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Before anyone blindly plugs those numbers into the AVCS table - those are a recommended WOT base map for the Tomei cams, not OEM. It's literally a single stripe of the entire table.

OEM cams run a considerably different range.
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Old 03-02-2018, 06:28 PM   #786
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Quote:
Originally Posted by mrsaturn7085 View Post
Before anyone blindly plugs those numbers into the AVCS table - those are a recommended WOT base map for the Tomei cams, not OEM. It's literally a single stripe of the entire table.

OEM cams run a considerably different range.
+1, and those are also for the EJ207
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Old 03-03-2018, 12:44 PM   #787
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Quote:
Originally Posted by ShinjiML View Post
+1, and those are also for the EJ207
That is true and noted in the image - this thread covers all AVCS tuning though the vast majority here will be on some generation of EJ255/257!
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Old 03-03-2018, 01:03 PM   #788
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I can't believe we have to start adding disclaimers and warnings to our posts now
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Old 03-03-2018, 11:10 PM   #789
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It just seemed like an odd thing to post given the extremely limited application of the info.
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Old 03-04-2018, 03:30 AM   #790
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really? I've seen so many posts in the past with "I've got these kelford/tomei/any other cams, what should I use as AVCS values" I figured it'd be useful
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Old 03-05-2018, 01:46 PM   #791
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It is appreciated and useful! By odd thing to post, I meant without the disclaimer - that's all!

Sadly, you've gotta work around the lowest common denominator here.
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Old 03-31-2018, 08:01 PM   #792
BrucesOutbackXT
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Default avcs edit map by expanding map size in ecuflash

I have been tuning my obxt 2008 auto.

I have sum success in expanding some of the maps to sizes used in stock
2009 WRX STI map. But on other parts of the mapping when trying enlarge the mapped area It seems to screw up the map when you ad data to it.

Any solutions advice ?

I now I can copy past parts of mapping into obxt map. but I was wanting to duplicate the maps information then give it a go.
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Old 05-11-2018, 03:21 PM   #793
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Need help sourcing a part number

I noticed some W25 heads have separate AVCS line on the passenger's head, not connected to the back of the head and turbo (the ever-breaking trio)

My D25 heads also have that opening, so I want to get it

here is what I mean

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