PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Can completely draining the battery wipe a tune?

Thread Tools
 
Search this Thread
 
Old Mar 30, 2011 | 11:48 PM
  #1  
Nastyc4's Avatar
Thread Starter
TECH Resident
iTrader: (13)
 
Joined: Sep 2006
Posts: 861
Likes: 5
From: Canada
Question Can completely draining the battery wipe a tune?

Can completely draining the battery wipe a tune?

I had an issue of stuttering while cruising in 6th. It popped the light but now it gone. Ever since my car has lost a ton of snarl from the exhaust. It doesnt rumble or bark when snapping the throttle. I don't know how else to explain it but it sounds more stock-like now. Drivability funny as it may seem, seems to actually be better. Better low rpm pulling when lugging gears trying tosave gas. I got on it a couple of times and it pulls real had so mug that it might even be faster I dunno.

This is really wierd I can't believe the sound has changed, there's no service engine light on anymore either. I wonder if that jerking I was getting cruising in 6th may have damaged something ?
Reply
Old Mar 31, 2011 | 12:05 AM
  #2  
minytrker's Avatar
9 Second Club
20 Year Member
Photogenic
iTrader: (13)
 
Joined: Sep 2004
Posts: 1,979
Likes: 273
From: Brenham
Default

No, it just erases your fuel trims and anything that it learned. The tune is hard programed into the pcm and wont erase by unhooking the batt.
Reply
Old Mar 31, 2011 | 12:58 AM
  #3  
Nastyc4's Avatar
Thread Starter
TECH Resident
iTrader: (13)
 
Joined: Sep 2006
Posts: 861
Likes: 5
From: Canada
Default

Interesting so it can have some noticeable affect on drivability ? That can explain it then, the car drives really good a little too stock like but I'd trade this smoothness for a little sound any day.

It all started with the driveline bucking while cruising at 80mph in 6th, it came and went. But the real change I'm describing here in sound and drivability only happened after I left the parking lights on and I killed the battery.
Reply
Old Mar 31, 2011 | 07:46 AM
  #4  
redtan's Avatar
TECH Junkie
iTrader: (5)
 
Joined: May 2008
Posts: 3,764
Likes: 17
From: Belmont, MA
Default

It's like a computer...if you unplug it from the wall and take the unit away does the hard drive lose all your files?

If reseting your battery makes the car drive better means your fueling needs to be tuned. The tune that you have now calls for shitty fueling, but reseting the battery fixes that...you need to get that fixed in the actual tune not by the battery.
Reply
Old Mar 31, 2011 | 12:55 PM
  #5  
Nastyc4's Avatar
Thread Starter
TECH Resident
iTrader: (13)
 
Joined: Sep 2006
Posts: 861
Likes: 5
From: Canada
Default

Oh I agree I would need to get the tune looked at. It was tuned in south Cali before I brought it up here in the winter weather in Toronto last summer. I just ant seem to figure out how the car sounded the way it did for 10 months and ten all of a sudden I flatten te battery and it sounds different and drives different..
Reply




All times are GMT -5. The time now is 11:08 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