How much is too rich?
How much is too rich? Well, I got my LC-1 hooked up and it works. Woohoo!
But it reads 10.1:1 AFR. Sound too rich to me. Any thoughts on what is considered too rich? And how much power do you think I'll gain by leaning it up to say..12.5:1? The engine is a 408.
But it reads 10.1:1 AFR. Sound too rich to me. Any thoughts on what is considered too rich? And how much power do you think I'll gain by leaning it up to say..12.5:1? The engine is a 408.
Just took it for a test drive. Idling it sat at about 19-20:1. Cruising down the road it was about 14.5-15:1. And when I nailed it, it went all the way down to 10.6:1. Too rich. I am running a 150 shot (wet) although I have not sprayed this new motor yet. It still sounds way to rich even for nitrous. Guess I need to talk to my tuner... 
Originally Posted by yobabiesdaddy2001
I dont think it should be idling at 19-20:1 that is kind of lean or uhhh very lean. Do you have a tuner program your self?
(Except yourself, because you care about your vehicle and its performance 100x more than anyone else.)Back to the LC-1,
I am wondering if my Lc-1 needs recalibrating. If true, that would make the WOT VERY rich. Any thoughts on that? Am I just running too lean at idle? Or is it just my LC-1 need recalibrating?
Is it cammed? Does it lope? If so you cant really trust the wideband reading at idle. If its a smooth idle motor, well, then its way too lean at idle.
BTW 10.5:1 A/F is way too rich. I would verify all your radings with another wideband. Take it to a dyno maybe?
BTW 10.5:1 A/F is way too rich. I would verify all your radings with another wideband. Take it to a dyno maybe?
Trending Topics
Did you hook up your LC-1 to your laptop and set it up using the LMProgrammer software?
What kind of gauge are you using?
If the outputs arent programmed it will read fawked up..
What kind of gauge are you using?
If the outputs arent programmed it will read fawked up..
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
Originally Posted by edcmat-l1
Is it cammed? Does it lope? If so you cant really trust the wideband reading at idle. If its a smooth idle motor, well, then its way too lean at idle.
BTW 10.5:1 A/F is way too rich. I would verify all your radings with another wideband. Take it to a dyno maybe?
BTW 10.5:1 A/F is way too rich. I would verify all your radings with another wideband. Take it to a dyno maybe?
Thats what I was just planning to do, verify the calibration with another wideband.
Originally Posted by stone4779
Did you hook up your LC-1 to your laptop and set it up using the LMProgrammer software?
What kind of gauge are you using?
If the outputs arent programmed it will read fawked up..
What kind of gauge are you using?
If the outputs arent programmed it will read fawked up..
As far as the gauge, it is the dynotune freebie that they gave away with the LC-1.
Thats probably it though...I'll see if I can borrow a laptop from work tomorrow. Thanks guys..
Your biggest challenge with that setup is going to be that 98 OS. It can ~work~, like settling for DOS when you could run XP?!? That setup is begging for a Road Runner and RTACS.
Originally Posted by Doc
Your biggest challenge with that setup is going to be that 98 OS. It can ~work~, like settling for DOS when you could run XP?!? That setup is begging for a Road Runner and RTACS.
With a 114 LSA it ought to idle pretty nice
Originally Posted by Doc
Your biggest challenge with that setup is going to be that 98 OS. It can ~work~, like settling for DOS when you could run XP?!? That setup is begging for a Road Runner and RTACS.
Originally Posted by 1320FEVER
Oh yeah, I forgot to mention that the current tune is an open loop tune.
Do you know what the idle vacuum is?
Originally Posted by edcmat-l1
Why? I could see open loop idle, but I wouldnt think it needs to be open loop tuned....Not that cam.
Do you know what the idle vacuum is?
Do you know what the idle vacuum is?
Originally Posted by edcmat-l1
Roadrunner and rtacs would be nice, but not needed. Its definately tunable...
With a 114 LSA it ought to idle pretty nice
With a 114 LSA it ought to idle pretty nice
98 Trans Am Idle
Originally Posted by 1320FEVER
No, how do I find this out? I had a shop tune it, so I don't know the specifics other than it is an open loop tune.
Yeah, that chops pretty hard. It dont sound like a 114. I see why its an open loop tune. Dont trust the wideband at idle. It sees way too much oxygen. Thats also why you cant make it idle in closed loop. It really screws with the 02s. You should be able to make it run in closed loop, just have to make it idle in open. She sounds real nice, tho...
Last edited by edcmat-l1; Feb 18, 2007 at 10:32 PM.
Originally Posted by edcmat-l1
You would need to scan it. How hard does it lope? What RPM does it idle at? That will tell you a little bit. Even with the 240+ duration, with the 114 LSA it should be fairly smooth.
I posted a link to the idle in the post above yours..
Originally Posted by edcmat-l1
Roadrunner and rtacs would be nice, but not needed. Its definately tunable...
With a 114 LSA it ought to idle pretty nice
With a 114 LSA it ought to idle pretty nice