PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Simple HPtuner Stuff...

Thread Tools
 
Search this Thread
 
Old Nov 29, 2004 | 07:02 PM
  #1  
C5kid's Avatar
Thread Starter
TECH Regular
iTrader: (12)
 
Joined: Mar 2003
Posts: 453
Likes: 0
From: Hershey, PA
Default Simple HPtuner Stuff...

Ok I just ordered HPtuners and I am goin to attempt to tweek my tune alittle to fix some things I don't like w/ the current tune I got from ECS.

First I am goni to remove the CATS. What do I have to do to turn off the rear 02 sensors?

Then I would like to lower the idle, what needs to be done here?

And finally I am having some surging problems around 2-3k when I am just slightly on the throttle. It kinda bucks and will only go away if i totally let off the throttle or give her some more gas.

Any help is appreciated.
Reply
Old Nov 29, 2004 | 08:51 PM
  #2  
MNR-0's Avatar
TECH Enthusiast
 
Joined: Mar 2004
Posts: 647
Likes: 0
From: Australia
Default

Originally Posted by C5kid
Ok I just ordered HPtuners and I am goin to attempt to tweek my tune alittle to fix some things I don't like w/ the current tune I got from ECS.

First I am goni to remove the CATS. What do I have to do to turn off the rear 02 sensors?

Then I would like to lower the idle, what needs to be done here?

And finally I am having some surging problems around 2-3k when I am just slightly on the throttle. It kinda bucks and will only go away if i totally let off the throttle or give her some more gas.

Any help is appreciated.
Disable Fuel Trim learning in engine section (you cant turn off the O2 sensors, but you can disable what they do)
Adjust base idle RPM under Idle tab in engine section
Idle/surge problems could be caused by many things. Log extensively and come back with some empirical data

Note that if you disable the Fuel trim learning you will have to tune for Open Loop. If it were me I would leave the Trim learning enabled. Its no harm to leave the O2 sensors doing their thing - CATS or not CATS.

If you are runnign no CATS then definately disable COT, under lean cruise tab
Reply




All times are GMT -5. The time now is 11:45 PM.

story-0
10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

Slideshow: 10 reasons daily-driving a swap project might not be for you. Or is it?

By Michael S. Palmer | 2026-06-17 09:39:05


VIEW MORE
story-1
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-2
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 | 2026-06-18 10:26:23


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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