. I guess I'll have to 'guestimate' as some of those cells will only be hit with WOT.
Hitting every cell in the VE during log?
Thread Starter
On The Tree
Joined: May 2004
Posts: 151
Likes: 0
Hitting every cell in the VE during log? Hi All,
When logging fuel trims with HPT for the VE table I seem unable to hit all the cells without using WOT to reach high rpm under load. I'm only managing the first top left third/half. Are there any tricks I can use to help or must I then 'predict' the missing values and shape the table plot manually?
Thanks,
Tom.
When logging fuel trims with HPT for the VE table I seem unable to hit all the cells without using WOT to reach high rpm under load. I'm only managing the first top left third/half. Are there any tricks I can use to help or must I then 'predict' the missing values and shape the table plot manually?
Thanks,
Tom.
You're not going to be able to hit all of the cells in the VE without going to extremes. You shouldn't be going WOT with PE disabled or without a wideband O2. Otherwise as stated above, hills and left-foot-braking will help in hitting some of the outter cells. Beyond that, you'll probably never hit the other cells without a major change in altitude. So, do your best to make an educated guess on what those cells might look like as a sort of back-up. Either way, if you plan on re-enabling your MAF, it should compensate fairly well for any major change.
Originally Posted by SSpdDmon
You're not going to be able to hit all of the cells in the VE without going to extremes. You shouldn't be going WOT with PE disabled or without a wideband O2. Otherwise as stated above, hills and left-foot-braking will help in hitting some of the outter cells. Beyond that, you'll probably never hit the other cells without a major change in altitude. So, do your best to make an educated guess on what those cells might look like as a sort of back-up. Either way, if you plan on re-enabling your MAF, it should compensate fairly well for any major change.
11 Second Club
Joined: May 2004
Posts: 528
Likes: 0
From: Ky
Originally Posted by SSpdDmon
You're not going to be able to hit all of the cells in the VE without going to extremes. You shouldn't be going WOT with PE disabled or without a wideband O2. Otherwise as stated above, hills and left-foot-braking will help in hitting some of the outter cells. Beyond that, you'll probably never hit the other cells without a major change in altitude. So, do your best to make an educated guess on what those cells might look like as a sort of back-up. Either way, if you plan on re-enabling your MAF, it should compensate fairly well for any major change.
Trending Topics
6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
I'm able to hit almost all the cells in a manual car. You simply go light on the pedal and go to max rpm in each gear. You need some open road, but doing that will fill almost all the cells.
As an example.
As an example.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
On The Tree
Joined: May 2004
Posts: 151
Likes: 0
Thanks J-Rod.
I can get the light throttle/high rpm bit but interesting to see that you managed 100KPa at 3600rpm without any PE coming in.
Seems as though we need to disable PE to be sure that the VE is correctly adjusted in the first instance but all advice is NOT to disable PE.
I'll keep trying.
If I happen to enter PE accidentally while logging will I be able to tell. (O2's aside as the cells will be taking multiple hits). Do I disregard any cells that have any PE input?
Tom.
I can get the light throttle/high rpm bit but interesting to see that you managed 100KPa at 3600rpm without any PE coming in.
Seems as though we need to disable PE to be sure that the VE is correctly adjusted in the first instance but all advice is NOT to disable PE.
I'll keep trying.
If I happen to enter PE accidentally while logging will I be able to tell. (O2's aside as the cells will be taking multiple hits). Do I disregard any cells that have any PE input?
Tom.
Originally Posted by Tommy Tucker
Thanks J-Rod.
I can get the light throttle/high rpm bit but interesting to see that you managed 100KPa at 3600rpm without any PE coming in.
Seems as though we need to disable PE to be sure that the VE is correctly adjusted in the first instance but all advice is NOT to disable PE.
I'll keep trying.
If I happen to enter PE accidentally while logging will I be able to tell. (O2's aside as the cells will be taking multiple hits). Do I disregard any cells that have any PE input?
Tom.
I can get the light throttle/high rpm bit but interesting to see that you managed 100KPa at 3600rpm without any PE coming in.
Seems as though we need to disable PE to be sure that the VE is correctly adjusted in the first instance but all advice is NOT to disable PE.
I'll keep trying.
If I happen to enter PE accidentally while logging will I be able to tell. (O2's aside as the cells will be taking multiple hits). Do I disregard any cells that have any PE input?
Tom.
