DIY PROM Do It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.

Changing the upper TPS limit in $6e

Thread Tools
 
Search this Thread
 
Old Aug 29, 2008 | 11:53 PM
  #1  
1991CamaroRslow's Avatar
Thread Starter
Supreme Member
iTrader: (3)
 
Joined: Oct 2005
Posts: 1,833
Likes: 0
From: Cincinatti OH
Car: 1991 L03 700r4 RS
Engine: 1987 WS6 Trans AM Lb2
Transmission: Th350 red neck Performance 3k stall
Axle/Gears: 95 Mustang 8.8 built with 3.73s
Changing the upper TPS limit in $6e

I've had a really strange problem with my Camaro the last few track outings, every time I attempt to spray the car it falls on its face in 3rd burning out the plugs (usually the number 4 and 6 but last time it also got number 7). I read recently that there's an upper TPS limit that turns off the PE enrichment at 4.8 volts in ARAP, what's the address and the formula to change this in the APYP bin? I'm pretty sure my TPS ran over 5 volts at full throttle so if that's the case it could explain why I'm burning plugs. BTW I'm using Tunerpro to edit my proms, thanks in advance everyone.
Reply
Old Aug 30, 2008 | 09:40 AM
  #2  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Changing the upper TPS limit in $6e

Code:
LC1F2   FCB  246        ; IF TPS A/D > set ERR #21
Can set the value to 255 to disable it. To change the value to a voltage:

volts = N * (5 / 255)

RBob.
Reply
Old Sep 2, 2008 | 09:46 AM
  #3  
1991CamaroRslow's Avatar
Thread Starter
Supreme Member
iTrader: (3)
 
Joined: Oct 2005
Posts: 1,833
Likes: 0
From: Cincinatti OH
Car: 1991 L03 700r4 RS
Engine: 1987 WS6 Trans AM Lb2
Transmission: Th350 red neck Performance 3k stall
Axle/Gears: 95 Mustang 8.8 built with 3.73s
Re: Changing the upper TPS limit in $6e

Got it done, my conversion says 51 volts but hey I know what it means. So when this is at the max (255) it is completely disabled? Or can I go to 5.1 volts then run into the same cutoff? Either way this should work but I'm just curious.
Reply
Old Sep 2, 2008 | 11:18 AM
  #4  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Changing the upper TPS limit in $6e

The code uses a BLS, branch less then or same. So it completely disables the error.

Both conversions are correct, one is the inverse of the other:

volts = N * (5 / 255)

-or-

volts = N / 51

RBob.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Azrael91966669
DIY PROM
25
Jun 20, 2017 04:04 AM
mdtoren
TPI
12
Aug 23, 2015 12:52 PM
mdtoren
Tech / General Engine
0
Aug 16, 2015 05:45 PM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM




All times are GMT -5. The time now is 07:35 AM.