PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

high duty cycle

Thread Tools
 
Search this Thread
 
Old Oct 10, 2012 | 07:27 PM
  #1  
cr2's Avatar
cr2
Thread Starter
Teching In
 
Joined: Sep 2008
Posts: 23
Likes: 0
Default high duty cycle

getting real high duty cycle %'s have a 2002 camaro with a 5.3L turbo. 3 bar map 80# injectors, -8 fuel system with -6 return, boost refrance regulator and two 320lph pumps in the tank. fuel pressure gauge reads that the fuel system is doing its job psi rises with boost. from 12psi-16psi duty cycle is getting into the 120's% to 150's% thinking its either the alternator or the injectors. what do you guys think?
Reply
Old Oct 11, 2012 | 09:26 AM
  #2  
Old Geezer's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Jun 2004
Posts: 5,639
Likes: 71
From: GA, USA
Default

Base fp is?
Data logs?
Reply
Old Oct 11, 2012 | 10:56 AM
  #3  
cr2's Avatar
cr2
Thread Starter
Teching In
 
Joined: Sep 2008
Posts: 23
Likes: 0
Default

base fuel pressure is 58. running E-85. need to get 2000's but i found it wierd before i did the fuel system, and the reason i did the fuel system, i made 707rwhp at 16psi with a duty cycle of 118% then we backed the timing down to be safe and had the duty cycle down to 105. then, from a stock fuel system, did rails -8 lines a boost ref rugulator with -6 return and duel 320lph pumps. and now without all that timming in getting duty cycles in the 150's%. i did upgrade to a 3 bar map though.
Reply
Old Oct 11, 2012 | 02:04 PM
  #4  
Old Geezer's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Jun 2004
Posts: 5,639
Likes: 71
From: GA, USA
Default

No way the injs ever ran at a DC above 100%. @118%, they were already maxed, and I'd think you were lucky it didn't toast something.
Post the tune file and the log[s]....
Reply
Old Oct 11, 2012 | 02:14 PM
  #5  
cr2's Avatar
cr2
Thread Starter
Teching In
 
Joined: Sep 2008
Posts: 23
Likes: 0
Default

heres the tune and a log
Attached Files
File Type: hpt
3barbase5.hpt (458.2 KB, 91 views)
File Type: hpl
5.hpl (588.2 KB, 77 views)
Reply




All times are GMT -5. The time now is 11:09 PM.

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 | 2026-06-09 14:55:56


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