Forced Induction Superchargers | Turbochargers | Intercoolers

best ls coil for turbo

Thread Tools
 
Search this Thread
 
Old May 12, 2021 | 10:52 AM
  #21  
RonSSNova's Avatar
8 Second Club
10 Year Member
Photogenic
Photoriffic
Top Answer: 1
iTrader: (3)
 
Joined: Aug 2011
Posts: 4,729
Likes: 814
From: Portland, OR
Default

Rotary is pretty sharp on this stuff. I bet he has mentioned it before.
Ive run the 585’s simply because they came on my L33. They do look cool with the heat sinks....

Im sure I had a set of the 581’s in my stash but gave them away.

Firecore and Melco were mentioned as brands. Are these not stock GM?

I get occasional popping and unexplained lean spikes and pops from time to time when I get up to 24psi.
My dwell tables are stock. I run the stock ecu. I should check to see if I can log dwell.
And get those coils back.
Reply
Old May 13, 2021 | 10:33 AM
  #22  
Johnny_M's Avatar
10 Second Club
5 Year Member
 
Joined: May 2018
Posts: 168
Likes: 21
Default

Your LS1 coils are good up 1200 hp. This been proven on the dyno. They can handle more dwell time than the truck coils. There is a test that was done YouTube down in Australia on all coil over plugs. Go check it out.
Reply
Old May 18, 2021 | 09:59 AM
  #23  
Forcefed86's Avatar
8 Second Club
15 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: May 2011
Posts: 8,485
Likes: 1,028
From: Wichita, KS
Default

Originally Posted by joes1966
heck I think the 581s are the coils i replaced the 585s with.I wanted to try something different to get something to work in my combo.Will need to take another look at the coils.
What is the lowest gap you've run? Depending on the ECU/harness used I've had to go down to .012 to get plugs to fire. The first thing I do is gap them down silly low and see if that elevates the problem. can you control dwell? What ECU?
Reply
Old May 18, 2021 | 02:57 PM
  #24  
joes1966's Avatar
Thread Starter
On The Tree
 
Joined: Nov 2020
Posts: 131
Likes: 9
Default

Originally Posted by Forcefed86
What is the lowest gap you've run? Depending on the ECU/harness used I've had to go down to .012 to get plugs to fire. The first thing I do is gap them down silly low and see if that elevates the problem. can you control dwell? What ECU?
I have the msd6014 and all you can do is maybe put the ls2 setting in it.I have been down to 15-16 and didnt really help.The car will just fall on its face once its making 20 psi.Its like I turned the key off almost.I have a terminator x on the way but holley so backed up not sure when it will get here

Reply
Old May 18, 2021 | 03:17 PM
  #25  
ddnspider's Avatar
10 Second Club
20 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Aug 2004
Posts: 14,628
Likes: 1,778
From: FL
Default

Originally Posted by joes1966
I have the msd6014 and all you can do is maybe put the ls2 setting in it.I have been down to 15-16 and didnt really help.The car will just fall on its face once its making 20 psi.Its like I turned the key off almost.I have a terminator x on the way but holley so backed up not sure when it will get here
That almost sounds like a grounding or loose connection somewhere in the system.
Reply
Old May 18, 2021 | 03:20 PM
  #26  
Forcefed86's Avatar
8 Second Club
15 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: May 2011
Posts: 8,485
Likes: 1,028
From: Wichita, KS
Default

Looks like you only have ls1/ls2 and "truck" Coil dwell settings. And no indication of what those settings are. I'd call MSD and ask.

Have you logged voltage? I've also noticed if the alt drops off line the deadtimes on the dead times can go wonky and really screw up the tune. All of my alts dropped off line on factory pulleys around 6k. Do you use a resisted plug?

Reply
Old May 18, 2021 | 05:52 PM
  #27  
joes1966's Avatar
Thread Starter
On The Tree
 
Joined: Nov 2020
Posts: 131
Likes: 9
Default

Originally Posted by ddnspider
That almost sounds like a grounding or loose connection somewhere in the system.
I put more grounds on frame heads etc because I thought that might be it as well.It didnt change it.Its very predictable as well it just cuts off pretty much the same time everytime.I record the boost gauge and pretty much consittently at 21psi it just shuts down.
Reply
Old May 18, 2021 | 06:00 PM
  #28  
joes1966's Avatar
Thread Starter
On The Tree
 
Joined: Nov 2020
Posts: 131
Likes: 9
Default

Originally Posted by Forcefed86
Looks like you only have ls1/ls2 and "truck" Coil dwell settings. And no indication of what those settings are. I'd call MSD and ask.

Have you logged voltage? I've also noticed if the alt drops off line the deadtimes on the dead times can go wonky and really screw up the tune. All of my alts dropped off line on factory pulleys around 6k. Do you use a resisted plug?
I called msd to see what the dwell setting are because I was curious as well.Msd,HOlley etc is so screwed up right now that the several people I talked to had absolutely no idea.Youy on the hold for 30 minutes or more and when you finally get through its to a person who only knows how to pick up he phone and thats it.I called to check on my terminator x and the person on the line told me that by looking at their site they dont ship out till 6/18.I told them i understand if you order it that day the ship time is the 18th what I want to know is when mine ships out that I ordered a 3 weeks ago.I told them I can get that info from the jegs website and ended up slamming the phone down for the 3rd time that week.All I can say about them currently is they are absolutely horrible.Sorry about the ran in your post you say the alt times .Is that the alternator or something else..I will look at that as well the shut down is very predictable and I have changed wastegates,carb,took my boost controller out of the loop and used a manual boost controller.I have basically changed everything you can change except turbos and ignition
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old May 18, 2021 | 06:38 PM
  #29  
ddnspider's Avatar
10 Second Club
20 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Aug 2004
Posts: 14,628
Likes: 1,778
From: FL
Default

Originally Posted by joes1966
I put more grounds on frame heads etc because I thought that might be it as well.It didnt change it.Its very predictable as well it just cuts off pretty much the same time everytime.I record the boost gauge and pretty much consittently at 21psi it just shuts down.
I've had a WOT shutoff condition in the past and it was wiring. It was exactly as you described, like someone shut the key off. Are you saying it doesn't do it at lower boost and same rpm?
Reply
Old May 18, 2021 | 07:51 PM
  #30  
joes1966's Avatar
Thread Starter
On The Tree
 
Joined: Nov 2020
Posts: 131
Likes: 9
Default

[QUOTE=ddnspider;20352916]I've had a WOT shutoff condition in the past and it was wiring. It was exactly as you described, like someone shut the key off. Are you saying it doesn't do it at lower boost and same rpm?[/QUOTE..What did you end up doing to fix your issue.This is the how mine acts.I run it and it does happen when im winding it out.Thats when I figured it was at the most boost which seems to be 20-21 psi.It just basically shuts off.I ran the wire for power from the msd to the battery with a 30map fust to make sure it wasnt that and no difference.I also ran a ton of grounds to make sure it wasnt that.Please post your findings would love to hear them..thank you
Reply
Old May 18, 2021 | 08:39 PM
  #31  
ddnspider's Avatar
10 Second Club
20 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Aug 2004
Posts: 14,628
Likes: 1,778
From: FL
Default

Originally Posted by joes1966
..What did you end up doing to fix your issue.This is the how mine acts.I run it and it does happen when im winding it out.Thats when I figured it was at the most boost which seems to be 20-21 psi.It just basically shuts off.I ran the wire for power from the msd to the battery with a 30map fust to make sure it wasnt that and no difference.I also ran a ton of grounds to make sure it wasnt that.Please post your findings would love to hear them..thank you
I've seen 3 different causes all show the same symptom. Coil pack wiring/EMI from a 2 step rev limiter, broken ground wire on the back of a cylinder head, and the stupidest was the battery terminal grounding out against the AC dryer. You need to see if it's strictly boost related or if it does it at the same rpm at less boost. Also need to see if it's at launch or in all gears. Blowing out spark isn't going to act like turning the key off, it'll act like a rev limiter/2 step.
Reply
Old May 19, 2021 | 04:02 AM
  #32  
joes1966's Avatar
Thread Starter
On The Tree
 
Joined: Nov 2020
Posts: 131
Likes: 9
Default

Originally Posted by ddnspider
I've seen 3 different causes all show the same symptom. Coil pack wiring/EMI from a 2 step rev limiter, broken ground wire on the back of a cylinder head, and the stupidest was the battery terminal grounding out against the AC dryer. You need to see if it's strictly boost related or if it does it at the same rpm at less boost. Also need to see if it's at launch or in all gears. Blowing out spark isn't going to act like turning the key off, it'll act like a rev limiter/2 step.
I will double check everthing again.I have switched all coil packs with the factory wiring included so shouldnt be anything with that..have many grounds but will look into that as well.I so appreciate you posting and its like a complete turn off and not a sputter etc when it happens...thanks again
Reply
Old May 19, 2021 | 05:20 PM
  #33  
joes1966's Avatar
Thread Starter
On The Tree
 
Joined: Nov 2020
Posts: 131
Likes: 9
Default

Originally Posted by ddnspider
I've had a WOT shutoff condition in the past and it was wiring. It was exactly as you described, like someone shut the key off. Are you saying it doesn't do it at lower boost and same rpm?
pmed you
Reply




All times are GMT -5. The time now is 08:55 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE