Will timing tricker affect reliability on PCM that has been reprogrammed by Ed Wright?
Thread Starter
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
Will timing tricker affect reliability on PCM that has been reprogrammed by Ed Wright?
On my heads, cam and header 98 vert with Ed Wright programming my timing should be 29 degress at WOT but has been autotapping at 27 and 28 degrees. I want perfect timing advance for ultimate performance. Leaning towards the timing tricker to get me extra degree or two as it trick pcm in thinking that air temp is always 51 degrees.
Ed Wright told me to stay away from this and that he set my car at 29 degrees at WOT, but I suspect that he is just being ultra conservative. I would appreciate all intelligent responses as to whether the timing tricker makes sense for me to get an extra edge in timing but even more importantly will this affect my PCMs reliability/dependability, as we all know how damn finickicy these PCMS are.
Thanks,
Nitro
[Modified by Nitrovette, 5:13 PM 8/5/2001]
Ed Wright told me to stay away from this and that he set my car at 29 degrees at WOT, but I suspect that he is just being ultra conservative. I would appreciate all intelligent responses as to whether the timing tricker makes sense for me to get an extra edge in timing but even more importantly will this affect my PCMs reliability/dependability, as we all know how damn finickicy these PCMS are.
Thanks,
Nitro
[Modified by Nitrovette, 5:13 PM 8/5/2001]
Racer
Joined: May 2000
Posts: 405
Likes: 1
From: Dallas
Re: Will timing tricker affect reliability on PCM that has been reprogrammed by Ed Wright?
I like to validate most of the modifications I do. I did many back to back tests on a '98 with the "wallet tricker", AutoTap, and the strip. Despite the 51 degree IAT reading, I was unable to observe any statistically substantial increased timing or improved time slips.
Just my observations.
Just my observations.
Race Director
Joined: Jan 2001
Posts: 11,183
Likes: 85
From: Castle Rock CO
St. Jude Donor '15
Will timing tricker affect reliability on PCM that has been reprogrammed by Ed Wright? (C5 Tweaker)
It makes very little since to me to have somebody like Ed Wright customize your PCM tuning and then turn around and start fooling the PCM. Most likely, Ed worked with the tuning to try and get you the full timing he could without starting detonation and knock retard. You may get 29 to 30 degrees of timing under certain conditions, but you won't just be blessed with it all the time. The PCM looks at a lot of info to decide what your timing should be.
Todd
Todd
Safety Car
Joined: Aug 2000
Posts: 4,154
Likes: 1
From: Murphy TX
Cruise-In II Veteran
Re: Will timing tricker affect reliability on PCM that has ... (Nitrovette)
In principle, I agree with the philosophy of "handle it through programming." I find the sensor hackery that you often see somewhat unsettling. That's about as nicely as I can say it. :blueangel:
That said, I also recognize the value of fine tuning. In that spirit you might look at team-zr1's little adjustable IAT circuit. It's a more flexible approach than using fixed value resistors and retains the function of the stock sensor. Maybe this would be useful to you.
I'm not quite sure I understand your question about PCM reliabilty and/or dependability. :confused: I think if you add a bias to one of the central inputs to timing selection, you could well induce over-aggressive timing and end up with worse timing :eek: but that doesn't have much to do with the reliabilty or dependability of the PCM. Adding such a bias wouldn't "corrupt" the programming if that's what you're thinking. It would just effectively be using the programming out of spec.
That said, I also recognize the value of fine tuning. In that spirit you might look at team-zr1's little adjustable IAT circuit. It's a more flexible approach than using fixed value resistors and retains the function of the stock sensor. Maybe this would be useful to you.
I'm not quite sure I understand your question about PCM reliabilty and/or dependability. :confused: I think if you add a bias to one of the central inputs to timing selection, you could well induce over-aggressive timing and end up with worse timing :eek: but that doesn't have much to do with the reliabilty or dependability of the PCM. Adding such a bias wouldn't "corrupt" the programming if that's what you're thinking. It would just effectively be using the programming out of spec.
