PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Where does the power come from?

Thread Tools
 
Search this Thread
 
Old Jul 16, 2009 | 08:37 PM
  #1  
sum guy's Avatar
Thread Starter
Launching!
iTrader: (4)
 
Joined: Jan 2007
Posts: 213
Likes: 1
From: South Carolina
Default Where does the power come from?

In the magazines and forums I've been reading it seems a good tune is worth about 25 hp. Even on a mostly stock engine. Learned on here these motors don't respond alot to advance timing, so most of the power is made with the air fuel ratio. Right? Does a tuner typically add fue or lean it out on a stockish tune? Thanks
Reply
Old Jul 16, 2009 | 08:52 PM
  #2  
slow's Avatar
TECH Senior Member
20 Year Member
iTrader: (7)
 
Joined: Dec 2001
Posts: 6,150
Likes: 7
From: Orlando
Default

it depends on the vehicle.

Some truck will run stoich at wot, those you add fuel to make power, other vehicles are rich from the factory and you need to remove fuel.

most ls1 cars do not get 25 hp from just a tune.

Ryan
Reply
Old Jul 17, 2009 | 09:41 AM
  #3  
2Tightwads's Avatar
Banned
 
Joined: Jun 2009
Posts: 42
Likes: 0
From: San Antonio, TX
Default

Normally leaning out the fueling and removing torque management on a stock tune net some seat of the pants dyno gains.
Reply
Old Jul 17, 2009 | 09:55 AM
  #4  
redtan's Avatar
TECH Junkie
iTrader: (5)
 
Joined: May 2008
Posts: 3,764
Likes: 17
From: Belmont, MA
Default

Even tho LSx engines don't really respond well to timing, you can still increase the timing and gain some power.

My stock LS2 was in the 20-21 range, now with the tune it's as high as 27, so clearly some power was made there. Add in better fueling at WOT and you can gain some 15rwhp from just a tune...idk if 25rwhp is realistic on a bone stock engine.
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