TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Quick EBL WOT WBO2 Screenshot

Thread Tools
 
Search this Thread
 
Old 11-09-2007, 12:25 AM
  #1  
Supreme Member

Thread Starter
iTrader: (1)
 
BronYrAur's Avatar
 
Join Date: Jun 2002
Location: Chicago, IL
Posts: 1,843
Likes: 0
Received 2 Likes on 2 Posts
Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
Quick EBL WOT WBO2 Screenshot

Ran the car with the LC1 hooked into the EBL today for a while, could only get in a few short WOT blasts because of traffic but I still managed to figure out some things. Here's a shot of the analysis. Commanded AFR is 12.8 so I'm running rich, but I corrected that already. The big things I noticed are the drop to 94/93 KPa MAP and the duty cycle getting up to 97%. I'm running the stock TBI with ultimate mods so either that is a restriction or the 14x2 open element. I'm also running stock 55# injectors at 21psi. So, according to my calculations, I have enough fuel at 97% DC to support around 315hp. I obviously need more pressure or a switch to one of the other sets of injectors I have around. It's hard to tell where they're going static, because the AFRs actually seem to match the VE table fairly accurately all the way up.

Just thought some of you may be interested in exactly what the EBL puts out and how easy it can be to tune with all this information. Looks like I'm making pretty good power too for a cheap setup.
Attached Thumbnails Quick EBL WOT WBO2 Screenshot-ebl_run_wot.jpg  
Old 11-09-2007, 08:59 AM
  #2  
Supreme Member

iTrader: (1)
 
TonyC's Avatar
 
Join Date: Dec 2000
Location: Mesa, AZ
Posts: 1,463
Likes: 0
Received 0 Likes on 0 Posts
Car: A Camaro
Engine: Weak
Transmission: Weaker
Re: Quick EBL WOT WBO2 Screenshot

That's a nice setup you've got, are you going to dyno it any time soon? I was thinking about upgrading to something along those lines.
Old 11-09-2007, 07:25 PM
  #3  
Supreme Member

Thread Starter
iTrader: (1)
 
BronYrAur's Avatar
 
Join Date: Jun 2002
Location: Chicago, IL
Posts: 1,843
Likes: 0
Received 2 Likes on 2 Posts
Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
Re: Quick EBL WOT WBO2 Screenshot

thanks, I doubt I'll dyno it any time soon, but I want to get to the track before it closes if I can. Just installed some made4you wire looms and new Summit ignition wires. Very nice products. about 28 bucks for the wires, and I believe they're made by Taylor, so that's an awesome deal to me.
Old 11-12-2007, 09:45 AM
  #4  
Member
 
7Point4's Avatar
 
Join Date: May 2004
Location: Dyersburg, TN
Posts: 109
Likes: 0
Received 0 Likes on 0 Posts
Car: 1990 Chevy 454SS
Engine: 454
Transmission: TH400
Re: Quick EBL WOT WBO2 Screenshot

Only experience I have with the EBL is from my own setup, which is different from yours, but from the jpg posted, it looks like your already static at the beginning of that log section. The sPW is maxed at 5.7, and the afr is going richer, which on my setup, was when the injectors were static. I believe the DC% is still going up because the rev's are increasing, so the 'available' PW time is less, and the DC% goes higher.

My MAP goes down quite a bit also at upper range WOT. I made a run with no air filter and housing at the track, and picked up 2 mph (in the 1/8th), and MAP went from 92-94 to 97-98. So that shows it might want more air. Which is good.
Old 11-12-2007, 01:09 PM
  #5  
Supreme Member

Thread Starter
iTrader: (1)
 
BronYrAur's Avatar
 
Join Date: Jun 2002
Location: Chicago, IL
Posts: 1,843
Likes: 0
Received 2 Likes on 2 Posts
Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
Re: Quick EBL WOT WBO2 Screenshot

Originally Posted by 7Point4
Only experience I have with the EBL is from my own setup, which is different from yours, but from the jpg posted, it looks like your already static at the beginning of that log section. The sPW is maxed at 5.7, and the afr is going richer, which on my setup, was when the injectors were static. I believe the DC% is still going up because the rev's are increasing, so the 'available' PW time is less, and the DC% goes higher.

My MAP goes down quite a bit also at upper range WOT. I made a run with no air filter and housing at the track, and picked up 2 mph (in the 1/8th), and MAP went from 92-94 to 97-98. So that shows it might want more air. Which is good.
Wow, thanks for pointing that out, I don't know how I missed that sPW value being constant almost. I was just basically paying attention to the DC%. Looks like I really do need to step up the injectors. Good thing I have some BBC injectors, and 65lb injectors laying around.

I'm also not complaining about it wanting more air haha
Old 11-12-2007, 02:26 PM
  #6  
Supreme Member

Thread Starter
iTrader: (1)
 
BronYrAur's Avatar
 
Join Date: Jun 2002
Location: Chicago, IL
Posts: 1,843
Likes: 0
Received 2 Likes on 2 Posts
Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
Re: Quick EBL WOT WBO2 Screenshot

Well, after a few calculations, I think a 5.7msec pulse width is not static until about 5200RPM. But, if figuring that I want under 85%DC I still am probably on the verge of static injectors for most of that run. Time for a little tuning.
Old 11-12-2007, 06:45 PM
  #7  
Member
 
7Point4's Avatar
 
Join Date: May 2004
Location: Dyersburg, TN
Posts: 109
Likes: 0
Received 0 Likes on 0 Posts
Car: 1990 Chevy 454SS
Engine: 454
Transmission: TH400
Re: Quick EBL WOT WBO2 Screenshot

Originally Posted by BronYrAur
Well, after a few calculations, I think a 5.7msec pulse width is not static until about 5200RPM. But, if figuring that I want under 85%DC I still am probably on the verge of static injectors for most of that run. Time for a little tuning.
FWIW, since installing the VRFPR with the EBL, i wish I would have done it sooner. It does work good.

Not cheap, 115$ for the regulator, and probably another 70$ for the AN stuff, but its worth it. I had to replace the fuel pump also, but still worth it.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
F-body-fan
Auto Detailing and Appearance
37
01-12-2023 01:49 PM
Pac J
Tech / General Engine
3
05-17-2020 10:44 AM
Rocket-Doc
TBI
1
11-14-2015 02:08 PM
Galaxie500XL
Suspension and Chassis
2
10-01-2015 01:05 PM
Damon
Tech / General Engine
8
09-26-2015 04:29 PM



Quick Reply: Quick EBL WOT WBO2 Screenshot



All times are GMT -5. The time now is 11:42 AM.