L98 Chip question
Thread Starter
Racer
Joined: Dec 2003
Posts: 375
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From: Aurora Co
L98 Chip question
Can someone tell me what benefits can be had by replacing the stock chip for my early '86 cast heads with an ADS SuperChip, street model? What upsides and downsides can I expect in performance in a daily driver? Is it a direct part swapout or are there other mods to be done? Thanks -
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Though I don't know exactly what that chip does, there are but a few things that can be done by an off the shelf chip:
-increase injector pulse width at WOT
-increase dynamic ignition timing
-lower the fan on/off temp
-change the TCC lockup point.
Since it is a "street chip" changes will be limited by the EPA. For specifics I would contact their web site or tech support line.
If you want to enhance performance: install an AFPR for trimming fuel flow at WOT, bump the TPS base idle setting from .54Vdc to .65Vdc, bump base timing till just below ping, install a 160deg T-stat and aux fan switch with that switch wired to control the main fan.
-increase injector pulse width at WOT
-increase dynamic ignition timing
-lower the fan on/off temp
-change the TCC lockup point.
Since it is a "street chip" changes will be limited by the EPA. For specifics I would contact their web site or tech support line.
If you want to enhance performance: install an AFPR for trimming fuel flow at WOT, bump the TPS base idle setting from .54Vdc to .65Vdc, bump base timing till just below ping, install a 160deg T-stat and aux fan switch with that switch wired to control the main fan.
Racer
Joined: Apr 2003
Posts: 426
Likes: 0
From: Detroit MI
This is part of a posting from an other efituning site.
ADS Superchip
Here is the other one. It's from the ADS Superchip that was in my car when I bought it. It didn't have any identifying numbers on it, but I presume that it is also the correct one for the car, '88 Vette, 3.07 auto.
The tune is generally richer in most areas and the spark tables are hotter on the top end than even ARAP My worn-out stock L98 was running into pretty severe detonation when running on this .bin, but here it is if anyone wants to take a look.
Download attachment
Removed for obvious reasons
ADS Superchip
Here is the other one. It's from the ADS Superchip that was in my car when I bought it. It didn't have any identifying numbers on it, but I presume that it is also the correct one for the car, '88 Vette, 3.07 auto.
The tune is generally richer in most areas and the spark tables are hotter on the top end than even ARAP My worn-out stock L98 was running into pretty severe detonation when running on this .bin, but here it is if anyone wants to take a look.
Download attachment
Removed for obvious reasons
Team Owner
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Originally Posted by RichD1986
Can someone tell me what benefits can be had by replacing the stock chip for my early '86 cast heads with an ADS SuperChip, street model?
I would not expect a performance increase. No off-the-shelf chip has been proven to be worth the expense.
Race Director
Joined: Aug 2000
Posts: 14,130
Likes: 7
Cruise-In II Veteran
My Late 86 with aluminum heads ran BETTER with the new stock chip I bought from GM.The ads chip I had in my car when I bought it was total junk.If you didnt know,GM upgraded the proms over the years to correct problems that the car may have had at first.
With the ads chip,it ran weird at times and while backing up,the idle would bounce up and down and acted like it wanted to stall.It just felt like it was not running right.If you want a chip done,have it professionally burned for your car by a tuner.Dont buy an off the shelf prom with preset tuning.It may not be correct for your cars tuning.If your car is stock with no head work,cam and etc done,and runs good,dont even bother with pre-programed chips.
Good Luck!
With the ads chip,it ran weird at times and while backing up,the idle would bounce up and down and acted like it wanted to stall.It just felt like it was not running right.If you want a chip done,have it professionally burned for your car by a tuner.Dont buy an off the shelf prom with preset tuning.It may not be correct for your cars tuning.If your car is stock with no head work,cam and etc done,and runs good,dont even bother with pre-programed chips.
Good Luck!
Pro
Joined: Jan 2002
Posts: 718
Likes: 0
From: W.V.C. Utah
Originally Posted by 65Z01
Though I don't know exactly what that chip does, there are but a few things that can be done by an off the shelf chip:
-increase injector pulse width at WOT
-increase dynamic ignition timing
-lower the fan on/off temp
-change the TCC lockup point.
Since it is a "street chip" changes will be limited by the EPA. For specifics I would contact their web site or tech support line.
If you want to enhance performance: install an AFPR for trimming fuel flow at WOT, bump the TPS base idle setting from .54Vdc to .65Vdc, bump base timing till just below ping, install a 160deg T-stat and aux fan switch with that switch wired to control the main fan.
-increase injector pulse width at WOT
-increase dynamic ignition timing
-lower the fan on/off temp
-change the TCC lockup point.
Since it is a "street chip" changes will be limited by the EPA. For specifics I would contact their web site or tech support line.
If you want to enhance performance: install an AFPR for trimming fuel flow at WOT, bump the TPS base idle setting from .54Vdc to .65Vdc, bump base timing till just below ping, install a 160deg T-stat and aux fan switch with that switch wired to control the main fan.
