LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

custom tune

Thread Tools
 
Search this Thread
 
Old Dec 3, 2007 | 01:30 PM
  #1  
SSWS6's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2006
Posts: 447
Likes: 0
From: Stockton, CA
Default custom tune

So I got a coupon from Synergy Motorsports for a custom tune for $350 so I am planning on getting a tune for the SS if they can fit me in this month. They never tuned an LS4 before I don't think but they use HP tuners so they should be able to do it. This is what I'm thinking of having them doing along with everything else they normally do:

-remove DOD?
-raise rev limiter to red line in park
-tune for 91 octane
-firm upshifts

Anything else I'm missing? I'm still not sure on the DOD as it does increase fuel efficiency somewhat, but the drone of 4-cyl mode bothers me and I always drive in 3 around town anyway. What do you guys think? If I get the tune I will post the dyno sheet here for everyone.
Reply
Old Dec 3, 2007 | 04:18 PM
  #2  
cherrygxp's Avatar
Launching!
 
Joined: Nov 2007
Posts: 225
Likes: 0
Default

that sounds like a pretty good start and the guys will be able to do quite a bit with the fuel etc... goodluck and psot results
Reply
Old Dec 3, 2007 | 09:22 PM
  #3  
Nacho SS's Avatar
TECH Junkie
iTrader: (4)
 
Joined: Feb 2007
Posts: 3,560
Likes: 0
From: 805-818
Default

Some other stuff to help you get started:

Fans
Governor
Power Enrichment
Fuel Trims
AFR
Torque Management
MAF tuning
Reply
Old Dec 4, 2007 | 11:41 AM
  #4  
SSWS6's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2006
Posts: 447
Likes: 0
From: Stockton, CA
Default

Thanks Nacho, I will mention those things to Rick. So I made my appt today to get my tune next Tuesday.
Reply
Old Dec 4, 2007 | 05:34 PM
  #5  
Area47's Avatar
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,732
Likes: 0
From: K.C.
Default

if they have tuned an ls1, the ls4 is fine.
Reply
Old Dec 4, 2007 | 07:23 PM
  #6  
IMPALA SS 07's Avatar
Launching!
 
Joined: Sep 2007
Posts: 225
Likes: 0
Default

ssws6 where do u live?
Reply
Old Dec 4, 2007 | 08:23 PM
  #7  
SSWS6's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2006
Posts: 447
Likes: 0
From: Stockton, CA
Default

I live in Stockton, CA.
Reply
Old Dec 4, 2007 | 10:14 PM
  #8  
Nacho SS's Avatar
TECH Junkie
iTrader: (4)
 
Joined: Feb 2007
Posts: 3,560
Likes: 0
From: 805-818
Default

Originally Posted by SSWS6
I live in Stockton, CA.
Central Cal guy eh? I'm slightly south of you......
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Dec 14, 2007 | 02:50 PM
  #9  
SSWS6's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2006
Posts: 447
Likes: 0
From: Stockton, CA
Default

Originally Posted by Nacho SS
Central Cal guy eh? I'm slightly south of you......
Actually I'm NorCal! I'm about 30 min south of Sac.
Reply
Old Dec 14, 2007 | 03:11 PM
  #10  
SSWS6's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2006
Posts: 447
Likes: 0
From: Stockton, CA
Default

Got my tune Tuesday and I'm pleased with the results, however I never really got a chance to go WOT from a dead stop yet. Had Rick disable the DOD. Its too early to tell how my overall mileage was affected, but driving around town I think maybe I lost 2-3 mpg at most. Car accelerates better and smoother. Upshifts are much snappier and faster, but not too jerky at partial throttle. Car downshifts much faster too. He adjusted the shift points, but it still seems to shift into 2nd way too early sometimes. Overall the car just feels a lot better. Thanks Rick!

Bad news is that Rick said he couldn't get a good number on the dyno because of some issue he talked about with the newer automatic cars not wanting to stay in 1st. So no numbers or dyno sheet. And sorry, I don't have a digital camcorder so no video guys.

On a side note there was a black S/C'd C6 Z06 there with CCW 505a wheels and Hoosier 345's drag radials. I wonder if that car belongs to anyone on this board. That thing is badass! 850+ whp and sounds freakin crazy! Kudos to whoever built that thing.
Reply
Old Dec 14, 2007 | 06:43 PM
  #11  
Nacho SS's Avatar
TECH Junkie
iTrader: (4)
 
Joined: Feb 2007
Posts: 3,560
Likes: 0
From: 805-818
Default

Sounds great man....good luck, if you have any questions, PM me.
Reply
Old Dec 18, 2007 | 02:39 AM
  #12  
SSWS6's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2006
Posts: 447
Likes: 0
From: Stockton, CA
Default

Originally Posted by Nacho SS
Sounds great man....good luck, if you have any questions, PM me.
Thanks Nacho, will do.

I just got back from a trip to Vegas and I averaged 24 mpg which includes driving around in town in Vegas. Not bad considering the entire drive is going up and down hills and I went 80-85mph the whole way.
Reply
Old Dec 18, 2007 | 02:46 AM
  #13  
Petey.Mcss's Avatar
On The Tree
 
Joined: Oct 2007
Posts: 102
Likes: 0
From: Fresno, Ca
Default

Originally Posted by SSWS6
Actually I'm NorCal! I'm about 30 min south of Sac.

im just south of you, im in Fresno!
Reply
Old Dec 18, 2007 | 07:01 AM
  #14  
cherrygxp's Avatar
Launching!
 
Joined: Nov 2007
Posts: 225
Likes: 0
Default

what does not wanting to stay in 1rst have to do with dyno numbers. Cars are not dynoed in 1rst anyways.
Reply
Old Dec 18, 2007 | 03:30 PM
  #15  
SSWS6's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2006
Posts: 447
Likes: 0
From: Stockton, CA
Default

Originally Posted by cherrygxp
what does not wanting to stay in 1rst have to do with dyno numbers. Cars are not dynoed in 1rst anyways.
He said that he didn't like the dyno results so he did most the tuning on the road. All he said was that he has trouble with these newer automatic cars and he mentioned the car wanting to shift too early. I didn't ask for any further explanation but maybe I should have.
Reply
Old Dec 18, 2007 | 09:08 PM
  #16  
Nacho SS's Avatar
TECH Junkie
iTrader: (4)
 
Joined: Feb 2007
Posts: 3,560
Likes: 0
From: 805-818
Default

Originally Posted by cherrygxp
what does not wanting to stay in 1rst have to do with dyno numbers. Cars are not dynoed in 1rst anyways.
Different gears ratios....1st gear is low...I think 3rd or OD is 1:1 in these cars.
Reply




All times are GMT -5. The time now is 06:08 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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