PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

First Start Issues..

Old Mar 29, 2018 | 08:55 PM
  #21  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,616
From: Central Cal.
Default

Hey, as long as you've got a handle on it. Best of luck, man!
Reply
Old Mar 30, 2018 | 11:41 AM
  #22  
07V's Avatar
07V
Teching In
 
Joined: Mar 2015
Posts: 45
Likes: 0
From: Houston, Tx
Default

Congrats on getting it up and running man. I'm glad you got the ECT stuff worked out, and the cam sensor being the same problem, two birds one stone! Your AFR reading wonky is definitely caused by the longtubes, it's not a big deal. Even after you put exhaust on it will probably bounce around a little, and the stock narrowband will hate the longtubes as well. I like to just command my idle to around 1200rpm to get a true reading for a few seconds to diagnose things like my flex sensor wiring. Just enough to smooth out the idle and get a steady stream of air.

If your narrowbands still aren't working properly after you check wiring (and maybe recheck after looking at the wiring diagrams on the forums like last time...) then be sure to check fuses. When I was trying to get closed loop up and running after several weeks of open loop only in my turbo setup, I couldn't get my o2 sensors to work anymore. I even went and bought new ones even though my old ones were working when I disabled them in my tune. Tried my old tune again, tried everything. Turned out I had blown a fuse when I made an extension harness to move the passenger side one. I felt so stupid.
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 02:47 AM.

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