DIY: ProjectLambda Stock ECU Reflash Tuning (Master Reference Thread) - Page 24 - Subaru Impreza GC8 & RS Forum & Community: RS25.com
 
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DIY: ProjectLambda Stock ECU Reflash Tuning (Master Reference Thread)
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Old 07-01-2019, 08:37 PM   #231
mberenis
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heres a photo of my dyno curve, u can see where my fuel goes lean. its the first dip on the torque curve

https://www.instagram.com/p/BzZg0b4n_zq/?igshid=1mfam5yz4ks49
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Old 07-02-2019, 11:38 AM   #232
mberenis
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so im curious, is the launch mode a hard or soft cut style?
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Old 07-21-2019, 03:42 PM   #233
crjohnson
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Hey Danscomp,

I finally got my 560cc blue injectors installed and the car running. Its running alright but not great.

I noticed in your tune file that you are using the exact load and airflow scalars off the lambda website. I found that the dark blue figures might be slightly wrong. I believe the injectors are closer to 560-565cc and my car ran like shit with those settings.

I was getting +25% stft constantly and terrible idle. I ended up changing the load scalar from 0.036 to 0.04322 and the airflow was 2.0905. I am using the same injector slope and offset from the website.

Those changes at least brought my idle STFT down from +25 to <+5% and drivability has improved heaps, cold starting is still slow and requires a few cranks. Before it was super boggy down low, taking off required heaps of clutch and more than 2-2500rpm. Plus if revs dropped to 2000 or less when changing gear, you almost had to go back to first gear!

Now its much better but still very boggy.
Cruising at 55-60kmh + 9% throttle + 2250rpm + 39kpa manifold pressure = +21 to 25% STFT.

I don't know what my minimum pulse width is as I cannot adjust it.

It seems strange to me that I might have to increase the load scalar more? It will be miles from the settings on the website and what you're using. Plus my hot and cold idle trims look better than the old injectors now.

Edit - it will be interesting to see what the spark plugs look like after some more driving.

Edit 2: I upped the VE across the board (except idle areas), drove home and tried to do some 60km/h cruising to let the STFT do its thing. Logs look really good so far, less than 5% STFT. Still has some bogging down issues at 1500rpm'ish when driving slow in say 1st or 2nd gear.

Edit 3: After a bit more driving, it started to run a bit crap, chew through fuel, plugs looked borderline fouled. Backed it off to .0365 load scalar. Running much better! Bought an AEM 30-0300 wideband too, idle is bang on 14.7ish, anywhere under load is around 11.5-12:1 afr. Looking good and hoping to do a long 3rd or 4th gear up hill pull, shut it off and check the plugs again.

Last edited by crjohnson; 08-23-2019 at 07:11 PM..
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Old 07-22-2019, 07:35 AM   #234
Hatecrewdeathroll
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Theres a few things going on. I dont think i can address evsrything right now. But heres a few recommendations.

1) Use the recommended load scalar

2) disable o2 feedback (set activate to 205c)

3) idle settings for some items need to manually changed when changing injector size / load scalar. The items basically need to be halved (280/560)

4) set your power mode fuel table to desired lambdas then, when warmed up, log lambda, absl kpa, & rpm (upstream o2 is a wbo2) and adjust your ve table til your real lambdas are close to desired.
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Old 07-22-2019, 05:04 PM   #235
crjohnson
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Thanks Hatecrew, I was hoping to borrow dads zeitronix wideband sensor soon and see whats going on a bit more. My car only has 1 narrow band sensor.
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Old 10-08-2019, 03:17 PM   #236
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Anyone know if there is going to be any updates to this software in future?
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Old 10-09-2019, 05:29 AM   #237
mberenis
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Id love to see it further developed. Ive been running it for a while now with great success. The car makes a power curve flat like a diesel, it was amazing how leaned out these things get from the factory. I changed my afr's to 14.4 cruise, 13.5 mid load, 12.5 wot upper. I did a very basic street tune and it made great improvements to throttle response, torque, and imo longevity of the motor. The factory afr's with bolt ons get very lean despite trims and learning, but with prohect lambda i was able to fix that. This thing may be NA but imo it fuggggin rips for no boost. Im constantly dusting traffic &#x1f3c7; vd said 151/148 , factory was 122/118&#x1f44c;&#x1f44c;&#x1f44c; &#x1f44c;

2000 2.5rs ej251 sohc
K&n intake /oe boxwith silencer delete
tsudo catless
tsudo uel
hks 3" exhaust


thats it! with those simple things and project lambda i made reliable gains.
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Old 10-11-2019, 12:42 AM   #238
CO671
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It looks like the units are out of stock: https://lambdatuning.com/product/tuner/
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Old 10-15-2019, 02:26 AM   #239
LYH45
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Quote:
Originally Posted by CO671 View Post
It looks like the units are out of stock: projectLAMBDA Tuner | projectLAMBDA
I emailed them late last month about this and they should have them in stock late this month or early next month.
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Old 10-16-2019, 11:12 AM   #240
Hatecrewdeathroll
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Last time I talked with Mike he said he was working on a flex fuel update. That would be great to see.

I'd also like to see an antilag option similar to the Carberry Rom available for bugeye wrxs.
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