You really need to get a better base tune. I think things are so messed up you are just trying to put bandaids on a horrible base.

Unless you recalibrate your wideband, stoich for e85 is still 14.7:1.

 

I don't think it's a horrible base tune. There might be a setting wrong or something. The car drives good until boost then it's too rich.

I know e85 and gas both use lambda value of 1. That's not a issue here

 

under the required fuel for the AFR setting for e85 should be 9.0. that will put you in a good range on the VE table

 

I agree with 94 Cobra. it does not matter if it's e85 or regular gas

 

If I change it to 9 and switch my gauge to rear e85 stoich will that actually change the tune or will things just display differently. If it does change the tune somehow what else would I need to adjust? Required fuel? Right now my gauge and tuner studio are using gas scale which I am comfortable with and prefer to use for now.

 

you would just change the requiring fuel calculations.where as you engine size, injector size and stoichiometric. this will just make your numbers on your ve table more manageable.right now there is not a lot of difference between your idle numbers and your hi boosted numbers. for example my numbers start at around 67 kPa which i think is around 45 on the VE table and then ramp up to 200 kPa which the numbers on the ve table top out at 255.so essentially there is a wide gap between 45 and 255.so to answer your question you would have to retune your ve table.

 

here's the manual that covers that. http://www.msextra.com/doc/index-ms1.html

 

So change the stoich to 9, recalculate the req fuel, and retune the ve table and that might fix my probem?

 

Do you use a 1:1 fuel pressure regulator that increases fuel with boost?

 

yes I have a one to one fuel pressure regulator.Yes under the required fuelwhere you set your cubic inches an injector size, in which it will change your required fuel.I sent you a personal message.

 

Don't change from the gas scale. Put a copy of your MSQ up here. I'll take a look at it.

 

Will post shortly

 

not sure how to post the tune here

posted here. page 5

http://www.msextra.com/forums/viewtopic.php?f=101&t=57405&p=430458#p430458


Its the latest tune that i re-did. i changed to .700 dead time, lowered req fuel and re calculated the VE table. its still rich wot, I need take more out up top but as u can see the numbers are already getting too low

 

Just a question. You have a real time BARO wired in along with the MAP on the board?

 

yes there is also a BARO inside the box

 

Gotcha.

Everything looks pretty decent. Besides the VE table needing some heavy working on, all the settings seem ok. You do have additional add ons that I haven't worked with before, so I cant say 100% on those.

I'd just make sure your wideband is working correctly, verify with another one, or calibrate it if it has a fresh air calibration.

I would disable your EGO control for now until you get a better table figured out.

Just log your driving around with light throttle pulls, then use the auto tune feature on megalogger to adjust. Once its learned a few times, log some harder throttle pulls. Use those log files to start tuning higher up.

 

i have tpsdot threshold to 1000 just to keep it out of the equation.

 

Thank you for looking.

How do I disable the EGO control? I have it switched to "dont include AFR" under general settings. Is that what turns it off?

I can do some driving gradually getting heavier on the throttle pulls with megalog autotune in between rounds like you suggested and see where it ends up. Im sure the table will end up with very low numbers on top like talked about, but i guess ill try anyways see what happens.

I had somebody suggest to unplug the vacuum to the fuel regulator to disable the 1:1 fueling. any suggestions on that?

 

Leave the regulator, that's a must have for boosted cars.

Go under Fuel control, AFR/EGO control. Put it to DISABLE or NO CORRECTION

I've done a few tables from scratch. I've gotten to where I can get a decent tune on the car within a couple days of logging, correcting, and repeating until it's close. Then dyno to get the kinks out, just use that logger!

 

I will give it a shot! should i not worry about what numbers are coming up on the top end?