C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Alarm problem fixed-Performance Chip Screwed it up???

Thread Tools
 
Search this Thread
 
Old Jun 15, 2005 | 09:42 PM
  #1  
SOF Vette's Avatar
SOF Vette
Thread Starter
Racer
Veteran: Army
20 Year Member
Liked
Top Answer: 1
 
Joined: May 2005
Posts: 372
Likes: 17
From: Cape Coral, FL
Default Alarm problem fixed-Performance Chip Screwed it up???

OK- the short version of the woes:
Clifford alarm system professionally installed- then the car ('91 coupe / L98) wouldn't run Thread here lots of suggestions and help from CF folks (THANKS!!! )
Mechanic looked all through it: final diagnosis, "an aftermarket performance chip in the ECM was knocked loose causing your engine problems, it has been removed, your car now runs stock, like it should. You should throw this chip in the bushes and forget about it-they are nothing but trouble"

I had no clue there was a performance chip in it, it hadn't been mentioned when I bought it last month.
I test drove the car, it runs fine just "differently" (much less powerful feeling) without the chip.
Soooo...
1. Are these chips really that bad for your car?
2. If not, how easy is it to but back into the ECM (mechanic said it just "sits in there on top of the stock chip)?
3. Should I put it back???

The Alarm install shop CAR-TOYS paid for the tow to the mechanic and 100% the diagnostics / repairs

Opinions on what to do next (with / about the chip)?

Thanks Again CF folks!!!

JTK
Reply
Old Jun 15, 2005 | 10:42 PM
  #2  
gbody5's Avatar
gbody5
Pro
20 Year Member
 
Joined: Sep 2001
Posts: 542
Likes: 1
From: Stuck in the 80's
Default

Did he give you the "performance" chip? If so, what is it? If not, tell him to give it to you and you will make the decision on what to do with it.
Reply
Old Jun 15, 2005 | 10:58 PM
  #3  
SOF Vette's Avatar
SOF Vette
Thread Starter
Racer
Veteran: Army
20 Year Member
Liked
Top Answer: 1
 
Joined: May 2005
Posts: 372
Likes: 17
From: Cape Coral, FL
Default

Originally Posted by gbody5
Did he give you the "performance" chip? If so, what is it? If not, tell him to give it to you and you will make the decision on what to do with it.
Thanks gbody-
Yes he did...it is a "38 pin" and has a sticker on it that says:

SUPERCHIPS INC with the numbers
S030401 ACXN

Imprinted on the green plastic of the chip are the following letters:
MEMADPTW

Thanks for helping me out!

JTK
Reply
Old Jun 16, 2005 | 01:10 AM
  #4  
tjwong's Avatar
tjwong
Le Mans Master
Supporting Lifetime Gold
20 Year Member
 
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Default

Originally Posted by SOF Vette
Thanks gbody-
Yes he did...it is a "38 pin" and has a sticker on it that says:

SUPERCHIPS INC with the numbers
S030401 ACXN

Imprinted on the green plastic of the chip are the following letters:
MEMADPTW

Thanks for helping me out!

JTK

Sounds like you have a piggyback chip carrier. The green plastic carrys the SuperChips prom, the GM MEMCAL also is plugged into this green board and the complete assembly plugs into the MEMCAL socket inside your ECM. Normally these boards reside in the PCM without any problems. Your mechanic should have been able to reseat the assembly into the ECM socket, I have never had a problem a problem using these carrier boards.
Reply
Old Jun 16, 2005 | 02:43 AM
  #5  
SOF Vette's Avatar
SOF Vette
Thread Starter
Racer
Veteran: Army
20 Year Member
Liked
Top Answer: 1
 
Joined: May 2005
Posts: 372
Likes: 17
From: Cape Coral, FL
Default

Originally Posted by tjwong
Your mechanic should have been able to reseat the assembly into the ECM socket, I have never had a problem a problem using these carrier boards.
Thanks for the response tjwong.
I found the chip at the Superchips website..#2900 for my particular car.
The mechanic honestly felt that (long term) these chips were somewhat destructive to the car, which was why he recommended to toss it in the bushes
Well, lookin for other opinons since I am a rookie here

THANKS!!!

JTK
Reply
Old Jun 16, 2005 | 11:10 AM
  #6  
tjwong's Avatar
tjwong
Le Mans Master
Supporting Lifetime Gold
20 Year Member
 
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Default

Originally Posted by SOF Vette
Thanks for the response tjwong.
I found the chip at the Superchips website..#2900 for my particular car.
The mechanic honestly felt that (long term) these chips were somewhat destructive to the car, which was why he recommended to toss it in the bushes
Well, lookin for other opinons since I am a rookie here

THANKS!!!

JTK
I really doubt that a generic off the shelf chip would be bad for your car long term or otherwise. If you don't want the chip throw it my way. I can always use the chip carrier No kidding these generic chips are generally modified stock chips that has a bit of timing added, sometimes the cooling fan turn on threshold is changed, a bit of PE fuel is removed. That is about it. Chips do go bad, but GM chips at times will fail as well, granted not very often but chips are nothing but electronic devices and they do fail from time to time.
Reply
Old Jun 16, 2005 | 02:24 PM
  #7  
gbody5's Avatar
gbody5
Pro
20 Year Member
 
Joined: Sep 2001
Posts: 542
Likes: 1
From: Stuck in the 80's
Default

Originally Posted by tjwong
I really doubt that a generic off the shelf chip would be bad for your car long term or otherwise. If you don't want the chip throw it my way. I can always use the chip carrier No kidding these generic chips are generally modified stock chips that has a bit of timing added, sometimes the cooling fan turn on threshold is changed, a bit of PE fuel is removed. That is about it. Chips do go bad, but GM chips at times will fail as well, granted not very often but chips are nothing but electronic devices and they do fail from time to time.


If it runs better/stronger with it, I say use it.
Reply
Old Jun 16, 2005 | 05:48 PM
  #8  
joe3906's Avatar
joe3906
Drifting
10 Year Member
 
Joined: Oct 2004
Posts: 1,976
Likes: 0
From: Patchogue NY
Default

I have the same car as you, and I have a performance chip in it; I also have an aftermarket keyless entry system, and the car runs really strong. If I were you, I would run the car with the chip, then run it without the chip, and then make a decision as to whether or not to leave the chip installed.

After market chips are in essence a mechanism to electronically inject the latest technology, and improved data garnered from years of testing into the car. Make an informed decision. LOL.

Joe B.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-1

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-2

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-3

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-4

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-5

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-6

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-7

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-8

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-9

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
Old Jun 16, 2005 | 06:47 PM
  #9  
SOF Vette's Avatar
SOF Vette
Thread Starter
Racer
Veteran: Army
20 Year Member
Liked
Top Answer: 1
 
Joined: May 2005
Posts: 372
Likes: 17
From: Cape Coral, FL
Default

Thanks for the input and replies folks. I honestly do appreciate the time you all took to consider this.
I have looked at the "Superchips" website and the install looks easy enough.

Any "precautions" I should take in removing the ECM from the vehicle (or is it really even necessary) for the "re-install" of the chip???

As always-THANKS!
JTK
(continueing the learning process)
Reply

Get notified of new replies

To Alarm problem fixed-Performance Chip Screwed it up???





All times are GMT -4. The time now is 12:37 AM.

story-0
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-1
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-2
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-3
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-4
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-5
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-6
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-7
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-8
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-9
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE