Can ANYONE chime in on this?
Thread Starter
Race Director
Joined: Oct 1999
Posts: 17,710
Likes: 1,219
From: Phila PA, Bonita Springs FL
Can ANYONE chime in on this?
From another post:
". The thing is that you can feel what seems to be the "rev limiter bounce" BUT the tach isn't up to the rev limit rpm yet..... Strange! Somebody must know what is happening here........"
I too also bumped what I think was the rev limiter on Sat, on only 1 (the first)out of 15 runs.
Could the rpm's be getting too high too fast, before the pcm "sees" the need to shift?
I have heard sometimes the pcm can't keep up, or can't shift fast enough in an abrupt "spin" situation..
Anyone????
". The thing is that you can feel what seems to be the "rev limiter bounce" BUT the tach isn't up to the rev limit rpm yet..... Strange! Somebody must know what is happening here........"
I too also bumped what I think was the rev limiter on Sat, on only 1 (the first)out of 15 runs.
Could the rpm's be getting too high too fast, before the pcm "sees" the need to shift?
I have heard sometimes the pcm can't keep up, or can't shift fast enough in an abrupt "spin" situation..
Anyone????
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Re: Can ANYONE chime in on this? (indypace78)
Ellis, I realize you're talking A4 here but per the PCM reading the tach signal - I can tell you that when I put my shiftlight in (reads directly off the tach signal) the light activated a finite amount of time before the tach needle/HUD reached rev-limiter rpm. The displays are over-damped to the point that Autotap would seem to be a more direct way of determining if there's truly any PCM reaction time lag.
