C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

VEmaster

Thread Tools
 
Search this Thread
 
Old Jun 21, 2005 | 09:15 PM
  #1  
FD2BLK's Avatar
FD2BLK
Thread Starter
Safety Car
20 Year Member
 
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Default VEmaster

Anyone ever use this? I am trying to get my BLM's spot on before an upcoming injector swap just so I have a good, near perfect baseline. I loged quite a bit of data today and ran the Vemaster software and it did change several of my VE tables and I am going to give it a run tomorrow and log some more data just wondering whatto expect. Also he recomended only using it up to 3000 RPM's has any one ever used it higher, say to 4000 RPM's? You wil have to forgive me but I am new to the whole tuning thing and am learning but slow. I have all the books and have read most of them but it isn't everything you needto know. I need a tuning for dumbys book, LOL.

BTW its a 94 and I have read conflicting info on how effective it is on a MAF car????
Anyone know if VEPHD will work with

Last edited by FD2BLK; Jun 21, 2005 at 10:31 PM.
Reply
Old Jun 22, 2005 | 07:39 PM
  #2  
ANTI VENOM's Avatar
ANTI VENOM
Melting Slicks
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Oct 2000
Posts: 2,158
Likes: 9
From: N.E. WA
Default

I haven't had the best luck with it on my MAP car, but Tom Wong uses it and it seems to work for him. Good luck!
Reply
Old Jun 23, 2005 | 09:19 AM
  #3  
STL94LT1's Avatar
STL94LT1
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Default

Originally Posted by FD2BLK
BTW its a 94 and I have read conflicting info on how effective it is on a MAF car????
I've had very good results using VeMaster on several 94's.
Reply
Old Jun 24, 2005 | 05:11 PM
  #4  
93 ragtop's Avatar
93 ragtop
Le Mans Master
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Default

Paul, contact Alvin at www.pcmforless.com I remember seeing where they had developed a vemaster phd ? and it was supposed to work a little better. There was a post on here awhile back about this but I couldnt find it.
Reply
Old Jun 24, 2005 | 08:41 PM
  #5  
tjwong's Avatar
tjwong
Le Mans Master
Supporting Lifetime Gold
20 Year Member
 
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Default

Originally Posted by 93 ragtop
Paul, contact Alvin at www.pcmforless.com I remember seeing where they had developed a vemaster phd ? and it was supposed to work a little better. There was a post on here awhile back about this but I couldnt find it.

VE PHd was created by Craig Moates

www.moates.net
Reply
Old Jun 24, 2005 | 09:03 PM
  #6  
FD2BLK's Avatar
FD2BLK
Thread Starter
Safety Car
20 Year Member
 
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Default

Thanks guys. I am starting to get what I feel the real facts are with all of this and already have to many tuners involved so I don't want to drag Alvin into this. Alvin please take no offence to that I respect your opinion but I already have three tuners giving me advice and am trying to sort out what advice is the best for me with my limited knowledge of tuning and limited resources. I am completely convinced that all of the tuners I have spoken with can make a car run absolutely perfect at WOT but the other 90% of the tune I feel takes many hours to get right and is not normally addressed in a dyno tune session. Tom you are one of the few tuners I have ever heard use a dyno for anything other then WOT tuning and if I remember correctly that is one of the reasons you went with a mustang dyno, so you could tune with different load conditions. I respect all of the tuners including Alvin for dedication hundreds of hours to try to make our lives better and am just starting to see that it is a steep learning curve if you want to do this stuff right. My plan at the moment is to try and back up a bit and tune my car as a speed density first with the MAF in place but disabled then hook up the MAF sensor and see where I am at. Just to let you know I have FMS 36# injectors that are stupid lean until the injector constant is around 31.5-33 The dyno cart bellow was with 33 and the WOT A/F was as expected but my BLM's where always 135-140. I changed to a constant of 31.5 and the BLMs cam around but I still need to do some more work. I am going to drop a set of 42's I have in just to get a point of reference if the BLM's come in with the constant at 42 I will assume there is a problem with my 36's if they come close when the constant is around 36 I will know either the motor just likes fuel or there is a problem else where in the tune. I feel pretty good because the timing looks to be just about right (I saw the point where adding timing became a bad thing on the dyno) I have no cam surge and the car runs great but I have a lot of money in this and I want the tune to be correct or as close as possible. Again thanks for all the help and I will let you know how it goes this weekend.
Reply
Old Jun 24, 2005 | 10:41 PM
  #7  
Alvin's Avatar
Alvin
Drifting
 
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Default

Originally Posted by tjwong
VE PHd was created by Craig Moates

www.moates.net

TJ,

look at the spread sheet.. it has my name there too. I was in collaboration on that.
Reply
Old Jun 24, 2005 | 10:56 PM
  #8  
Alvin's Avatar
Alvin
Drifting
 
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Default

Originally Posted by FD2BLK
Thanks guys. I am starting to get what I feel the real facts are with all of this and already have to many tuners involved so I don't want to drag Alvin into this. Alvin please take no offence to that I respect your opinion but I already have three tuners giving me advice and am trying to sort out what advice is the best for me with my limited knowledge of tuning and limited resources. I am completely convinced that all of the tuners I have spoken with can make a car run absolutely perfect at WOT but the other 90% of the tune I feel takes many hours to get right and is not normally addressed in a dyno tune session. Tom you are one of the few tuners I have ever heard use a dyno for anything other then WOT tuning and if I remember correctly that is one of the reasons you went with a mustang dyno, so you could tune with different load conditions. I respect all of the tuners including Alvin for dedication hundreds of hours to try to make our lives better and am just starting to see that it is a steep learning curve if you want to do this stuff right. My plan at the moment is to try and back up a bit and tune my car as a speed density first with the MAF in place but disabled then hook up the MAF sensor and see where I am at. Just to let you know I have FMS 36# injectors that are stupid lean until the injector constant is around 31.5-33 The dyno cart bellow was with 33 and the WOT A/F was as expected but my BLM's where always 135-140. I changed to a constant of 31.5 and the BLMs cam around but I still need to do some more work. I am going to drop a set of 42's I have in just to get a point of reference if the BLM's come in with the constant at 42 I will assume there is a problem with my 36's if they come close when the constant is around 36 I will know either the motor just likes fuel or there is a problem else where in the tune. I feel pretty good because the timing looks to be just about right (I saw the point where adding timing became a bad thing on the dyno) I have no cam surge and the car runs great but I have a lot of money in this and I want the tune to be correct or as close as possible. Again thanks for all the help and I will let you know how it goes this weekend.
I think you have my process confused.

We load in a base file that we've developed in the past. The base files are pretty hard core as I honestly have one say.. for a hotcammed stock short block LT1 there will be a completely different tune for injector types (not just a constant change but VE/MAF table change as well), gearing, auto/manual, heads, and even High altitude.. Usually these base files will come from my "load your own" customers where I have usually about 10-15 iterations in just cleaning up blms' or cars we buy as buisness expenses just to dail in different setups. One of my personal cars have had 3 different injectors, 3 different cams, auto/ manual, 2 different types of blowers, nitrous, etc.. not for the performance but just getting the setups nailed.

If you ever have a chance to meet me in person (your in my area) and actually see my library you'll see something like

93 F 350 Auto 3.23 hotcam SVO 30 stock heads
93 F 350 auto 3.23 hotcam Accel 30 stock heads
93 F 350 Auto 3.23 hotcam SVO 30 stock heads high alt
...etc

So for just a hotcammed LT1 there are probally 10 different files per year/model.

so.. we load in this special base, take the car for a ride and record BLM's to make sure they are in order and once the car checks out OK we strap it on.

I guess you just assume we don't do anything to part thottle and just strap it on.. Your really missing the background that goes into these base files.


It also sounds like your more concerned with a number rather than actually performance. But i'll agree a car with blm's closer to 128 seem to drive a ton better than one just inside its limits.. thats why me and craig got going on VEphd. A Ve calculator before the time of VEmaster (for 93 older)

we are working on anthor right now that is super swweet.. a little more user friendly and it has user defined constraints to weedout frivolous data or weed out undesired TPS, map, RPM, datasets.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Jun 24, 2005 | 10:57 PM
  #9  
ztrips's Avatar
ztrips
Pro
15 Year Member
 
Joined: Aug 2004
Posts: 544
Likes: 0
Default

I can't find it on moates.net. Is it available for download?
Reply
Old Jun 24, 2005 | 10:58 PM
  #10  
Alvin's Avatar
Alvin
Drifting
 
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Default

Originally Posted by ztrips
I can't find it on moates.net. Is it available for download?

Should be.. might be on the old website link on the front page.
Reply
Old Jun 24, 2005 | 11:13 PM
  #11  
FD2BLK's Avatar
FD2BLK
Thread Starter
Safety Car
20 Year Member
 
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Default

Originally Posted by Alvin
I think you have my process confused.
Alvin,
Sorry I didn't mean to imply how you tune as I have no idea. I was at no point referring to you or the way you tune in any way. I have never had you do any work for me so I would have no place making any comments. The only point I was trying to make is I already have brought in to many chefs and one more would likely just confuse me more. I am open to any and all suggestions and am thankful for the help that many including you offer freely on the boards. My only other point is for me it's not about a number it’s about the proper A/F ratio for all conditions. The best way I can describe it is using speed density as an example I want all the cells to be correct. In order to do this the car needs do be driven under a Varity of load conditions and RPM ranges. I don't think many are willing to spend the money to do this and most tuners while generous would probably prefer to not work for free. I could be way off here but I just want the car to be tuned for my new setup as well for 50% throttle going up a hill as it is for WOT at 6000 RPM's on a dyno. BTW do you think my idea of tuning in speed density mode to begin with is compleatly crazy or could it provide a good baseline to begin with ensuring I have proper fuel below 4000 RPMs and then I can hook up the MAF sensor make any needed changes then finaly get to PE and WOT A/F and timing?
Reply
Old Jun 24, 2005 | 11:19 PM
  #12  
FD2BLK's Avatar
FD2BLK
Thread Starter
Safety Car
20 Year Member
 
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Default

Originally Posted by ztrips
I can't find it on moates.net. Is it available for download?

http://www.moates.net/gmecm/software.html
Reply
Old Jun 24, 2005 | 11:33 PM
  #13  
Alvin's Avatar
Alvin
Drifting
 
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Default

Originally Posted by FD2BLK
Alvin,
Sorry I didn't mean to imply how you tune as I have no idea. I was at no point referring to you or the way you tune in any way. I have never had you do any work for me so I would have no place making any comments. The only point I was trying to make is I already have brought in to many chefs and one more would likely just confuse me more. I am open to any and all suggestions and am thankful for the help that many including you offer freely on the boards. My only other point is for me it's not about a number it’s about the proper A/F ratio for all conditions. The best way I can describe it is using speed density as an example I want all the cells to be correct. In order to do this the car needs do be driven under a Varity of load conditions and RPM ranges. I don't think many are willing to spend the money to do this and most tuners while generous would probably prefer to not work for free. I could be way off here but I just want the car to be tuned for my new setup as well for 50% throttle going up a hill as it is for WOT at 6000 RPM's on a dyno. BTW do you think my idea of tuning in speed density mode to begin with is compleatly crazy or could it provide a good baseline to begin with ensuring I have proper fuel below 4000 RPMs and then I can hook up the MAF sensor make any needed changes then finaly get to PE and WOT A/F and timing?


If your really worried about tuning part throttle what I would do is setup a realistic limit say 118-134. (notice its more of a swing to rich) Its ok to venture beyond those realms occasionally but when you do a average at the end of the log it should fall between those lines.

You probally would be best hiring someone to do a "over the net" or "load yourself" package and just swap datalogs and bins back and forth. One thing though, now that you've changed your injector constant you'll need to redo your wot stuff.


If you want to do it yourself I would reccomend building a nice spreadsheet that averages BLM's on a particluar run vs. say MAF gm/sec or VE spot. Then us a commmon correction formula to figure out where you need to go with it.

Its not beyond your ability if you have any experience with excel. its just important that you take a look at AVG blm and not instant BLM. If I was you, I would almost think about correcting the MAF transfer function per gm/sec block if you want it extremely accurate.. its how I do the mustangs and older L98's and I've had really great success with both.

I can't speak from too much experience on the 94-95's because bryan handles them, The only thing I do with them is clean them up on the dyno and do datalogs on them to make sure they are looking good on BLM.
Reply
Old Jun 25, 2005 | 11:02 PM
  #14  
Alvin's Avatar
Alvin
Drifting
 
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Default

Craigs been working on a new spreadsheet and while i've been down here I"ve been kinda making sugestions on it. Its pretty powerful in the right hands. What it does is plot a variable you define threw a csv dump. It allows you to quick look at AFR, O2, blm, int, etc.. what ever you set.

If you need it, or anyone else for that matter I can send it to you.

Its really just nice seeing a AVG blm x RPM x MAP table to see exactly where you stand and where you need to go.
Reply
Old Jun 25, 2005 | 11:06 PM
  #15  
FD2BLK's Avatar
FD2BLK
Thread Starter
Safety Car
20 Year Member
 
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Default

Alvin sent you a Pm am am interested my e-mail is ejfagala@yahoo.com

Thanks again for all the help.
Reply

Get notified of new replies

To VEmaster





All times are GMT -4. The time now is 01:03 AM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE