breaks up under load
Thread Starter
11 Second Club
iTrader: (11)
Joined: Dec 2008
Posts: 784
Likes: 0
From: San Diego/ from the 316
breaks up under load need some ideas on where this issue is coming form.
2004 GTO forged 347 78mm turbo 4l80 9.6:1 compression 230ish cam 3400ish stall.
in park the car free revs fine, snappy response idles and revs fine. even when snapinging the throttle open and closed quickly..
once it is put in gear the idle gets rougher, and if there is any load it will break up and show lean on AFR guage. something new is the gas pedal feels like it is pushing back when it does it. its cable not electronic.
im at a loss where to look. new crank and cam sensors along with 3 bar MAP sensor.
not sure what else to say need any more info just tell me here is a copy of the current tune and a basic log I need to set up new configs still ..
any help will be accepted!!
21sep_1.hpl
21sep_91base.hpt
2004 GTO forged 347 78mm turbo 4l80 9.6:1 compression 230ish cam 3400ish stall.
in park the car free revs fine, snappy response idles and revs fine. even when snapinging the throttle open and closed quickly..
once it is put in gear the idle gets rougher, and if there is any load it will break up and show lean on AFR guage. something new is the gas pedal feels like it is pushing back when it does it. its cable not electronic.
im at a loss where to look. new crank and cam sensors along with 3 bar MAP sensor.
not sure what else to say need any more info just tell me here is a copy of the current tune and a basic log I need to set up new configs still ..
any help will be accepted!!
21sep_1.hpl
21sep_91base.hpt
On The Tree
Joined: Nov 2012
Posts: 183
Likes: 0
From: Winnipeg, Manitoba
need some ideas on where this issue is coming form.
2004 GTO forged 347 78mm turbo 4l80 9.6:1 compression 230ish cam 3400ish stall.
in park the car free revs fine, snappy response idles and revs fine. even when snapinging the throttle open and closed quickly..
once it is put in gear the idle gets rougher, and if there is any load it will break up and show lean on AFR guage. something new is the gas pedal feels like it is pushing back when it does it. its cable not electronic.
im at a loss where to look. new crank and cam sensors along with 3 bar MAP sensor.
not sure what else to say need any more info just tell me here is a copy of the current tune and a basic log I need to set up new configs still ..
any help will be accepted!!
Attachment 470071
Attachment 470072
2004 GTO forged 347 78mm turbo 4l80 9.6:1 compression 230ish cam 3400ish stall.
in park the car free revs fine, snappy response idles and revs fine. even when snapinging the throttle open and closed quickly..
once it is put in gear the idle gets rougher, and if there is any load it will break up and show lean on AFR guage. something new is the gas pedal feels like it is pushing back when it does it. its cable not electronic.
im at a loss where to look. new crank and cam sensors along with 3 bar MAP sensor.
not sure what else to say need any more info just tell me here is a copy of the current tune and a basic log I need to set up new configs still ..
any help will be accepted!!
Attachment 470071
Attachment 470072
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
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
Thread Starter
11 Second Club
iTrader: (11)
Joined: Dec 2008
Posts: 784
Likes: 0
From: San Diego/ from the 316
Well i know they are gunna be high the are autozone wires. I have to use longer wires. I need to buy some better wires i know. I didnt think it would be an issue just to get running
You know what is much easier to find than a set of known good used spark plug wires? One of these. Test your wires before you spend a dime on another set
Last edited by oscs; Sep 25, 2014 at 07:29 AM.
Hows your voltage on the car? My car was pretty low on voltage (9-10v) and it really messed with my injectors. it was fine driving around but as soon as it transitioned into boost, it broke up really bad.
at night Had same issue. Wait till night time with hood up have someone sit in seat footbrake dont break tires loose just load car. Watch plug wires there will be a arch some where. I run same plugs .35 gap. Ohmed wires still had issue. Then was told to wait till dark have wife footbrake car and sure enough only under load I had 1 arch off header. Headers were wrapped to amazing.
Had same issue. Wait till night time with hood up have someone sit in seat footbrake dont break tires loose just load car. Watch plug wires there will be a arch some where. I run same plugs .35 gap. Ohmed wires still had issue. Then was told to wait till dark have wife footbrake car and sure enough only under load I had 1 arch off header. Headers were wrapped to amazing.
