ECMlink 2g e16g tune, input appreciated

[Throwback23]

Hey everyone, just finished my tune and was mostly curious if i should continue to pull timing from the small areas of knock im seeing....(.4, .7) anyways everything is pretty dialed but my aem wb is pretty junk as far as logging even after adjusted so its slightly inaccurate on the log, im right around 10.8 (92 pump) throughout...as far as the hp est i know their usually pretty wrong but i did my part to try and make it accurate. Weighed my car at the closest weight station and came out to 2900 without driver and i weight 220ish, i also went with 15% drive train loss but idk probably still off by a chunk. Im no pro tuner so im sure it can be picked apart but i guess im looking for a general go or no go opinion. Thanks everyone!

 

[DSMer541]

Not bad, you could probably lean it out a bit, but your timing curve looks good , I wouldn't worry about the small amounts of knock. Only so much you can do with V2... If you ever need a hand with tuning or anything let me know, i'm not far from you.

 

[snowborder714]

What base fuel pressure are you running?

Do you have a cat in your exhaust?

Why are you adding fuel in the upper range when 780's should support 38 lbs/min without any problem? You should be taking fuel out to lean it to your desired AFR.

Have you looked at your AFRatioEst during a pull? It's way off. Probably a combination of adding a ton of fuel and your MAF Comp not being dialed in.

HP/torque accuracy also depends on the Drivetrain values being set properly.

 

[Throwback23]

What base fuel pressure are you running?

Do you have a cat in your exhaust?

Why are you adding fuel in the upper range when 780's should support 38 lbs/min without any problem? You should be taking fuel out to lean it to your desired AFR.

Have you looked at your AFRatioEst during a pull? It's way off. Probably a combination of adding a ton of fuel and your MAF Comp not being dialed in.

HP/torque accuracy also depends on the Drivetrain values being set properly.

I don't have a cat, and as for injectors i defiantly realize there's something odd going on there...i spent some time trying to figure out why i had to add fuel to see 11.1afr while pushing idc to 90% @ base 2g fuel pressure so i band aided the situation for the time being and bumped it to 50psi without vac and same fuel settings i saw 10.8 throughout on the wb...

Adding a ton of fuel up top was my only method of getting to where i am at 10.8, although via a ghetto method which is not a long term solution...i never questioned if my injectors were smaller then 780s as i got them with the car but maybe they arnt idk...time to pull them out and check i suppose. The maf is dialed, that i dont question at all... i followed the diy everyone is referred to and had good success...5000-6000rpm is exact or real close to 21psi in boost est..what do you usually use for drive train loss%?

Anyways thanks for the input i def want to figure the fuel situation out, i may be too simple minded on this one but regardless of injector settings high or low....if im seeing a good afr and not going over 90% idc my thought is it should usable band-aid, no? i could see some issues if they are smaller though... that 90% idc is going to be inaccurate and in reality maxing them out or beyond thus the reason i have to add fuel...idk time will tell maybe its something else, i drive the car once or twice a month so i have time to fiddle around with it. hope i make sense, if not ill try harder when im more awake

 

[snowborder714]

Well, your MAF isn't dialed in based on your WBFactor value. It shows the variation between AFRatioEst and the logged wideband. That should be 0% or as close as possible. You should be able to get that as well as BoostEst lined up pretty well, but keep in mind you don't have an actual logged boost source so you're just using a calculated value to reference.

Definitely check on the injectors. Something weird is going on there.

For whp estimates, use 0 for drivetrain loss. For engine estimates, I'm not sure.

 

[DSMer541]

Assuming there are no boost leaks, or exhaust leaks and your boost gauge and boostEst lines up at around 5500 rpm ... Injectors are not scaled correctly, or your Wide Band is not reading correctly.. Global fuel is more than likely off.
Since you had to add about 14% fuel in on your sliders to get to the AFR you wanted, just add about 14% fuel or more too global then zero out your sliders, try around -30% global fuel. You will need to bring the deadtime down significantly after doing this as well to compensate for the added fuel. So bring the deadtime down till you see Combined Fuel Trim cycle back around 0%. Then you will want to use you MAFComp sliders to get CombFT inline for any more small deviation in comb Fuel Trim. I like to lightly hold the throttle at about 1300-1400 rpm (not moving), then hold at 2k, 2.5k rpm to adjust that and then go for a drive...

Since your only on V2 we cant modify your fuel maps obviously to get the desired AFR, but judging by your 2.0-2.3 Load the ecu is probably trying to target about 10:1 to as low as 9.6:1 AFR on the base maps above 4500 rpm.. Obviously you don't want that much fuel so thats where the sliders will come into play to get your desired AFR to about 10.8-11.1:1 in boost once the injectors are setup properly.

Your IDC% is getting up there so that's definitely something to be concerned about. But definitely should not be that high with only 780cc injectors. Hopefully the idc% will come down once the injectors are scaled correctly.