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Old 09-23-2009, 08:19 PM   #1
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Virtual VE tuning

this program is a must have for anyone with hptuners tuning a ls3/l99 ecm with its virtual ve setup, the newer gm pcm's dont have a typical VE table for fuel control, you now have a virtual ve and maf to tune fuel.

this program is from the hptuners forum, it took me a while to get it figured out, my car would not run on the factory ve settings, when i would disconnect the maf it would just die and i couldnt even hardly keep running, after about an hour with this software i can now unplug my maf and drive away with no issues, the enigne fuel trims stay real close to what they were with the maf on.
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File Type: zip EQ_VE3.zip (340.0 KB, 528 views)
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Old 09-23-2009, 09:06 PM   #2
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Whats the advantage of running both MAF and VE. Can you feel the difference? Is the car more responsive? I'm just wondering, right now I have the MAF dialed in perfectly and the car feels great (dynamic airflow is off), I really don't believe tuning the VE table and turning them back on will result in any noticeable differences. . . but i could be wrong
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Old 09-23-2009, 09:17 PM   #3
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what if you are driving along and your maf fails and you dont have the ve tuned your car will probly run like crap. my setup would not run on the factory ve, but a car with just a few bolt-ons may be fine

give it a try, un plug your maf and see how it runs, log your fuel trims and see how far off they are
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Old 09-24-2009, 07:11 PM   #4
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Well since my VE is tuned out I don't think the car will run at all when I unplug the maf lol. Besides from having the backup if the MAF fails while driving I am wondering if tuning my VE will give me any benifits. I'll going to try tuning my VE just for fun but was just wondering if I should expect to see any differences. Thanks
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Old 09-24-2009, 10:24 PM   #5
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E85LSX - what other mods have you done to get to 420RWHP? Also, what all was required to tune for E85? I am planning to purchase HPT to tune my car....so I am in the uphill side of the learning curve. Thx
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Old 09-24-2009, 11:17 PM   #6
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Skip the VE tune crap and run MAF only. Eliminate the VE table imo. Yes the software works to tune the virtual VE but its still alot of extra un-needed work. LS3 sensors are terribly accurate and can handle ALOT of boost!
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Old 09-25-2009, 10:51 PM   #7
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I agree with you 2tightwads but as am experiment I will tune my VE and run both MAF and SD to see if it makes a difference. I will keep you guys posted as to what i find.


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Originally Posted by 66DeuceLS1 View Post
E85LSX - what other mods have you done to get to 420RWHP? Also, what all was required to tune for E85? I am planning to purchase HPT to tune my car....so I am in the uphill side of the learning curve. Thx
I will pm you so we don't hijack this thread but my current mods are in my sig, headers and tuned. I did just finish putting a cam in her though so hopefully I'm closer to 500rwhp now! After I tune it in I'll dyno again and post the results in a new thread.
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Old 09-26-2009, 09:23 AM   #8
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Quote:
Originally Posted by E85LSX View Post
I agree with you 2tightwads but as am experiment I will tune my VE and run both MAF and SD to see if it makes a difference. I will keep you guys posted as to what i find.




I will pm you so we don't hijack this thread but my current mods are in my sig, headers and tuned. I did just finish putting a cam in her though so hopefully I'm closer to 500rwhp now! After I tune it in I'll dyno again and post the results in a new thread.



are you using hptuners,can you post you e85 tune up, id like to look
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Old 09-26-2009, 07:14 PM   #9
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here you go, knock yourself out lol
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File Type: zip 2010 CAMARO LS3 M6_HEADERS_ALCOHOL.zip (1.46 MB, 211 views)
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Old 10-07-2009, 06:42 AM   #10
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The VE tables are used for speed density calculations. Anytime you are changing the airflow requirements (beyond a cold air intake such as a blower, cam, heads, etc) using and tuning the VE table will help with transient fueling predictions (quick throttle changes). That being said you can still 100% disable the VE and run just the MAF
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Old 10-08-2009, 04:19 PM   #11
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Which tables are used for ve with this pcm?
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Old 10-08-2009, 05:40 PM   #12
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Quote:
Originally Posted by Bmble_B View Post
Which tables are used for ve with this pcm?


use the program from my first post and it will run you through which tables to load into it to create your virtual ve table, you can then modify the table and send the data back to the hp tuner file tables
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Old 10-09-2009, 11:29 AM   #13
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use the program from my first post and it will run you through which tables to load into it to create your virtual ve table, you can then modify the table and send the data back to the hp tuner file tables
Cool, thanks for the help. I have skipped from earlier models with tunable ve tables to a 2010 camaro ss with a maggie, so I'm back in the learning curve again!
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Old 10-09-2009, 11:42 AM   #14
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Cool, thanks for the help. I have skipped from earlier models with tunable ve tables to a 2010 camaro ss with a maggie, so I'm back in the learning curve again!
Sh!t you start tuning the MAF/new virtual VE tables and your WAY ahead of the learning curve. There are still shops out there who still rape the IFR/PE tables to get results, never even once touching the MAF/VE! Post you results okay!
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