would the real tuners please stand UP ?

Reply Subscribe

Thread Tools

Search this Thread

Aug 17, 2008 | 12:22 PM

#21

LS1-450

TECH Junkie

iTrader: (33)

Joined: Aug 2005

Posts: 3,783

Likes: 9

By mechanical issue, I meant an exhaust leak, intake leak, pressure venting issue,...etc., something more related to tuning. As for my offer to help................your welcome.

Aug 17, 2008 | 01:12 PM

#22

slow

TECH Senior Member

iTrader: (7)

Joined: Dec 2001

Posts: 6,150

Likes: 7

From: Orlando

Do you have access to any of the tune files, and if so, can you send the one that works, but fails inspection to me ryan212 at aol.com, and i will see if there is anything I can see.

Ryan

Aug 17, 2008 | 04:13 PM

#23

White_Hawk

TECH Fanatic

iTrader: (3)

Joined: Mar 2002

Posts: 1,364

Likes: 0

From: Pontiac, MI

It sounds like a tip-in hesitation issue. Does anyone have some standard ideas for fixing this? I have a similar issue on mine - I was going to try more throttle cracker air flow.

-Geoff

Aug 17, 2008 | 05:21 PM

#24

3timeracin

Thread Starter

Launching!

iTrader: (15)

Joined: Jan 2008

Posts: 214

Likes: 0

From: 81 NY support

I would like to thank all members that sent offers like ls1-450 to help me. Car still has a hesitation like white hawk but had another person I met at the track staurday helped me today, back at the track. I pulled an all nighter switching the carb setup back to the injection he got the car to run alot better went 10.78 best today with the injection was running 10.40's with the carb so its working good now timing to get that hesitation fixed and final tuning done.

Aug 18, 2008 | 03:22 AM

#25

macca_779

TECH Enthusiast

Joined: Nov 2006

Posts: 620

Likes: 0

From: Katherine N.T Australia

Quote:

Originally Posted by Frost

You can run SD without failing the MAF too with a little work in the dynamic airflow area

How would you go about doing this? I know its easy enough to go MAF 100% but going SD 100% without failing the MAF is a new one for me.

Aug 18, 2008 | 04:57 AM

#26

MNR-0

TECH Enthusiast

Joined: Mar 2004

Posts: 647

Likes: 0

From: Australia

Have you tried a 4-bbl instead of the elbow?

Aug 18, 2008 | 09:42 AM

#27

3timeracin

Thread Starter

Launching!

iTrader: (15)

Joined: Jan 2008

Posts: 214

Likes: 0

From: 81 NY support

Quote:

Originally Posted by MNR-0

Have you tried a 4-bbl instead of the elbow?

I tried a carb went 10.40's with carb now going 10.70's with EFI I am going to just run a carb instead runs alot harder with carb.

Aug 18, 2008 | 09:50 AM

#28

Frost

FormerVendor

iTrader: (45)

Joined: Jul 2005

Posts: 5,913

Likes: 2

From: Richmond VA

Quote:

Originally Posted by macca_779

How would you go about doing this? I know its easy enough to go MAF 100% but going SD 100% without failing the MAF is a new one for me.

Should be like this (this is off the top of my head, so...)

Engine>Airflow>Dynamic Airflow
high RPM disable to 8K
Deep Decel MAP 0.00 kPa

Engine>Airflow>Steady State
hi/lo rpm thresh 8K
hi/lo MAP thresh 105kPa
hi MAP Delta 0kPa
lo TPS Delta 100%
hi TPS Delta 100%
idle MAP Integ Time 255
idle map Integ Threshhold 0.00
Idle VSS Max 0.0
Idle TPS Max 0.0%
Idle MAP Time Enable 255
Idle MAP Threshold Enable 0.00

LS1 Tech Stories

The Best V8 Stories One Small Block at Time

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

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

Aug 18, 2008 | 09:58 AM

#29

firechicken_98

TECH Apprentice

iTrader: (8)

Joined: Mar 2004

Posts: 307

Likes: 0

From: Atlanta

Have you tried using a different MAF? A bad MAF will cause the issues that you describe. Find someone with a stock MAF that you know works, put that on and take it for a drive. Just a thought.

Aug 18, 2008 | 10:04 AM

#30

ALLBOTTLE

LS1TECH Sponsor

iTrader: (13)

Joined: May 2007

Posts: 1,062

Likes: 1

Have you checked the PCm It self to make sure it is still running properly? It is possible that at some point in all those tunes someone screwed something up. Get a New PCM flashed with your Vin and start from scratch new a new tune. for all we know that pcm can be toast.

Aug 19, 2008 | 02:56 AM

#31

macca_779

TECH Enthusiast

Joined: Nov 2006

Posts: 620

Likes: 0

From: Katherine N.T Australia

Quote:

Originally Posted by Frost

EFI LIVE doesn't have those tables. So I guess that is why I've never heard of it. Handy stuff to know.

Aug 19, 2008 | 05:08 AM

#32

Frost

FormerVendor

iTrader: (45)

Joined: Jul 2005

Posts: 5,913

Likes: 2

From: Richmond VA

Quote:

Originally Posted by macca_779

EFI LIVE doesn't have those tables. So I guess that is why I've never heard of it. Handy stuff to know.

I have EFIL on my tuning laptop, not here so I can't look

Maybe they are just sporting a different name?

Aug 19, 2008 | 05:46 AM

#33

macca_779

TECH Enthusiast

Joined: Nov 2006

Posts: 620

Likes: 0

From: Katherine N.T Australia

Quote:

Originally Posted by Frost

I have EFIL on my tuning laptop, not here so I can't look

Maybe they are just sporting a different name?

Perhaps. I've looked on two so far 99+LS1 and an 05 1mb LS1. I couldn't see anything, but would be interested if there is something.

Aug 19, 2008 | 09:32 AM

#34

TTPMatt

Banned

iTrader: (18)

Joined: Aug 2003

Posts: 2,984

Likes: 0

From: Wayne, NJ

Quote:

Originally Posted by 3timeracin

I dint feel the car is not ready it has been 9.30's last season on s SD tune so I dont see the big deal with closed loop being added ? all i changed from last season is the camshaft springs and went to closed loop. I am not tottally stupid I have been low eight in a door car I had with a 632 in it i built the complete car myself as well as 5 other cars, also this runs great with my friends carb setup on it with the MSD 6010 box everyshop around here is not reputable by any means the only shop i would consider well known is New Era they are a sponsor so I tried them last and the tune was worse than the tune I had before from TTP the TTP tune the car ran great just a couple hiccups now and then.

Hmm.. I am trying to remember this particular vehicle. I'm glad the car ran great at one point. How did you "add" closed loop? Did you change back all the parameters for closed loop? Could be a few parameters are still left.

I'd be glad to take a peek at it for you...

Aug 19, 2008 | 11:28 AM

#35

3timeracin

Thread Starter

Launching!

iTrader: (15)

Joined: Jan 2008

Posts: 214

Likes: 0

From: 81 NY support

Quote:

Originally Posted by firechicken_98

Have you tried using a different MAF? A bad MAF will cause the issues that you describe. Find someone with a stock MAF that you know works, put that on and take it for a drive. Just a thought.

new slp maf ?

Aug 19, 2008 | 11:30 AM

#36

3timeracin

Thread Starter

Launching!

iTrader: (15)

Joined: Jan 2008

Posts: 214

Likes: 0

From: 81 NY support

Quote:

Originally Posted by TTPMatt

A customer owned the car when you tuned it according to him ? It did run the best at that point. I have bought the car from him now.

Aug 20, 2008 | 10:46 AM

#37

SSAUTOCHROME

Banned

iTrader: (2)

Joined: Jun 2007

Posts: 108

Likes: 0

From: San Antonio,TX

Has your tuner tried this...

This will cause IMMEDIATE system check readiness.

P0131-P0167
P0400-P0430
P1133-P1156
P1404-P1416
P1441-P1443

Set to "NOT REPORTED" Concerning the MIL (DTC's) light codes...just turn them off "DISABLED"

Reply Subscribe