...

Go Back   Lateral-g Forums > Technical Discussions > EFI and Forced Induction
User Name
Password



Reply
 
Thread Tools Display Modes
  #1  
Old 07-28-2011, 10:37 AM
Yenko LS Yenko LS is offline
Member
 
Join Date: May 2011
Location: ONTARIO CANADA
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
Default 6.0 conversion IDLE PROBLEMS

i love my LS engine,but if i drive spirited the idle will bobble up and down 3 times.Do i need to do a dyno tune to correct this ? It has a out of box tune from Howell. Other than that it runs awesome.i know this is vauge,just trying to find out how man guys how had a professional tune and if it fixed problems? THX Wes
Reply With Quote
  #2  
Old 07-28-2011, 11:43 AM
69MyWay's Avatar
69MyWay 69MyWay is offline
Supporting Member
 
Join Date: Feb 2005
Location: Clinton, IL
Posts: 1,256
Thanks: 8
Thanked 13 Times in 6 Posts
Default

After my live dyno tune - the results were amazing and immediate.

We did an article on it here:

http://mcspeed.homestead.com/Dyno-Tune.html
Reply With Quote
  #3  
Old 07-29-2011, 08:34 AM
Yenko LS Yenko LS is offline
Member
 
Join Date: May 2011
Location: ONTARIO CANADA
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks.. i was looking for the push to get it tuned. One other question ,on conversions is anyone using a clutch switch and other than being a neutral safety does it relate anything to pcm for base idle or off idle problems? Thanks Wes
Reply With Quote
  #4  
Old 07-29-2011, 10:04 AM
69MyWay's Avatar
69MyWay 69MyWay is offline
Supporting Member
 
Join Date: Feb 2005
Location: Clinton, IL
Posts: 1,256
Thanks: 8
Thanked 13 Times in 6 Posts
Default

Quote:
Originally Posted by Yenko LS View Post
Thanks.. i was looking for the push to get it tuned. One other question ,on conversions is anyone using a clutch switch and other than being a neutral safety does it relate anything to pcm for base idle or off idle problems? Thanks Wes


Wes if you are running a stick shift it is crucial that you have a VSS hooked up if you want the best possible drive-ability from your machine. The PCM will look for speed to determine if you are at a stopped idle or if you are coasting. You can have stall problems without it.

On the clutch switch it is just plain smart to have that in there and avoid the car cranking in gear. Many of the wire harness systems go through that to make them work.
Reply With Quote
  #5  
Old 07-29-2011, 10:16 AM
Yenko LS Yenko LS is offline
Member
 
Join Date: May 2011
Location: ONTARIO CANADA
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks for help! Yes i do have a neutral safety threw the tremac transmission.I also have the VSS wired and working. I just dont like the stumble and 1000 rpm base idle. Like your right up says i am happy with every thing else. THX Wes
Reply With Quote
  #6  
Old 07-29-2011, 10:32 AM
camcojb's Avatar
camcojb camcojb is offline
Administrator
 
Join Date: Jul 2004
Location: Wilton, CA.
Posts: 12,579
Thanks: 4,181
Thanked 1,443 Times in 625 Posts
Default

Sounds like the tuner will probably need to adjust the throttle follower tables. This determines how fast the IAC is allowed to shut down when the throttle is closed. Too fast will cause stalling or jumps in idle speed as the IAC catches the engine when the rpms drop fast. May also need to tweak how fast the IAC reacts, slow it down a bit. A good tuner will have that sorted out no problem, as well as setting your idle rpm.
__________________
Jody

PAST CAR PROJECTS

Like Lateral-G on Facebook!

Follow Lateral-G on Instagram!

SPECIAL THANKS TO:
Jacob Ehlers and Amsoil for the lubricants and degreasers for my 70 Chevelle project
Shannon at Modo Innovations for the cool billet DBW bracket
Roadster Shop for their Chevelle SPEC Chassis
Dakota Digital for their Chevelle HDX Gauge Package
Painless Performance for their wiring harness

Ron Davis Radiators for their radiator and fan assembly.
Baer Brakes for their front and rear brakes

Texas Speed and Performance for their 427 LS Stroker
American Powertrain for their ProFit Magnum T56 kit
Currie Enterprises for their 9" Third Member
Forgeline for their GF3 Wheels
McLeod Racing for their RXT street twin clutch
Ididit for their steering column
Holley for their EFI and engine parts
Lokar and Clayton Machine for their pedals and door and window handles
Morris Classic Concepts for their 3 point belts and side mirrors
Thermotec for their heat sleeve and sound deadening products
Restomod Air for their Tru Mod A/C kit
Mightymouse Solutions for their catch can
Magnaflow for their 3" exhaust system
Aeromotive for their dual Phantom fuel system
Vintage Air for their new Mid Mount LS front drive
Hydratech Braking for their hydroboost system
Borgeson for their stainless steering shaft and u joints
Eddie Motorsports for their hood and trunk hinges and misc parts
TMI Products for their seats, door panels, and dash pad
Rock Valley Antique Auto Parts for their stainless fuel tank
Reply With Quote
  #7  
Old 07-29-2011, 10:53 AM
Yenko LS Yenko LS is offline
Member
 
Join Date: May 2011
Location: ONTARIO CANADA
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
Default

THANKS GUYS. This is why i come here. It is funny,the longer you drive these conversions the more you want them to be refined. Wes
Reply With Quote
  #8  
Old 07-29-2011, 11:03 AM
camcojb's Avatar
camcojb camcojb is offline
Administrator
 
Join Date: Jul 2004
Location: Wilton, CA.
Posts: 12,579
Thanks: 4,181
Thanked 1,443 Times in 625 Posts
Default

Quote:
Originally Posted by Yenko LS View Post
THANKS GUYS. This is why i come here. It is funny,the longer you drive these conversions the more you want them to be refined. Wes
that's the advantage of these late model EFI swaps; incredible power potential and when properly tuned can drive as smooth as your late model grocery getter.
__________________
Jody

PAST CAR PROJECTS

Like Lateral-G on Facebook!

Follow Lateral-G on Instagram!

SPECIAL THANKS TO:
Jacob Ehlers and Amsoil for the lubricants and degreasers for my 70 Chevelle project
Shannon at Modo Innovations for the cool billet DBW bracket
Roadster Shop for their Chevelle SPEC Chassis
Dakota Digital for their Chevelle HDX Gauge Package
Painless Performance for their wiring harness

Ron Davis Radiators for their radiator and fan assembly.
Baer Brakes for their front and rear brakes

Texas Speed and Performance for their 427 LS Stroker
American Powertrain for their ProFit Magnum T56 kit
Currie Enterprises for their 9" Third Member
Forgeline for their GF3 Wheels
McLeod Racing for their RXT street twin clutch
Ididit for their steering column
Holley for their EFI and engine parts
Lokar and Clayton Machine for their pedals and door and window handles
Morris Classic Concepts for their 3 point belts and side mirrors
Thermotec for their heat sleeve and sound deadening products
Restomod Air for their Tru Mod A/C kit
Mightymouse Solutions for their catch can
Magnaflow for their 3" exhaust system
Aeromotive for their dual Phantom fuel system
Vintage Air for their new Mid Mount LS front drive
Hydratech Braking for their hydroboost system
Borgeson for their stainless steering shaft and u joints
Eddie Motorsports for their hood and trunk hinges and misc parts
TMI Products for their seats, door panels, and dash pad
Rock Valley Antique Auto Parts for their stainless fuel tank
Reply With Quote
  #9  
Old 07-30-2011, 12:25 PM
Mike Norris Mike Norris is offline
Supporting Vendor
 
Join Date: Feb 2007
Location: Indianapolis, IN
Posts: 98
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Good talking to you the other day Wes. Bring her down here and I will see what I can do for ya

Have a great weekend.

Mike Norris
__________________
Mike Norris Motorsports
Raymonds Performance
3828 Clarks Creek Road
Plainfield, IN 46168
407-616-2518
www.mikenorrismotorsports.com
[email protected]
Visit Our Facebook Page
Reply With Quote
  #10  
Old 07-30-2011, 06:01 PM
camcojb's Avatar
camcojb camcojb is offline
Administrator
 
Join Date: Jul 2004
Location: Wilton, CA.
Posts: 12,579
Thanks: 4,181
Thanked 1,443 Times in 625 Posts
Default

Quote:
Originally Posted by Mike Norris View Post
Good talking to you the other day Wes. Bring her down here and I will see what I can do for ya

Have a great weekend.

Mike Norris
Mike's the man!
__________________
Jody

PAST CAR PROJECTS

Like Lateral-G on Facebook!

Follow Lateral-G on Instagram!

SPECIAL THANKS TO:
Jacob Ehlers and Amsoil for the lubricants and degreasers for my 70 Chevelle project
Shannon at Modo Innovations for the cool billet DBW bracket
Roadster Shop for their Chevelle SPEC Chassis
Dakota Digital for their Chevelle HDX Gauge Package
Painless Performance for their wiring harness

Ron Davis Radiators for their radiator and fan assembly.
Baer Brakes for their front and rear brakes

Texas Speed and Performance for their 427 LS Stroker
American Powertrain for their ProFit Magnum T56 kit
Currie Enterprises for their 9" Third Member
Forgeline for their GF3 Wheels
McLeod Racing for their RXT street twin clutch
Ididit for their steering column
Holley for their EFI and engine parts
Lokar and Clayton Machine for their pedals and door and window handles
Morris Classic Concepts for their 3 point belts and side mirrors
Thermotec for their heat sleeve and sound deadening products
Restomod Air for their Tru Mod A/C kit
Mightymouse Solutions for their catch can
Magnaflow for their 3" exhaust system
Aeromotive for their dual Phantom fuel system
Vintage Air for their new Mid Mount LS front drive
Hydratech Braking for their hydroboost system
Borgeson for their stainless steering shaft and u joints
Eddie Motorsports for their hood and trunk hinges and misc parts
TMI Products for their seats, door panels, and dash pad
Rock Valley Antique Auto Parts for their stainless fuel tank
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 10:05 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright Lateral-g.net