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View Full Version : Pulse width Modulation???



vetteboy2k
June 22nd, 2005, 06:58 AM
I get a sorta shuttering from the trans at around 60MPH when the getting into the throttle very slowly (highway crusing) hard to repeat, but like downshifting shifting from 4th-3rd.

Someone told me b/c of my torque converter I need to up the pulse width modulation.

Anyone know where thats located under, or if there is a different meathod of tuning the trans to get rid of the shuttering.

joecar
June 24th, 2005, 07:02 AM
I don't see a tune parameter for this.

To better see what's going on, post a log chart showing:
VSS
RPM
SPARK
TP
MAF
MAP
IAT
ECT
TFT
PRND
Current Gear
PCS
last shift time
last shift error
TCC PWM

and also these pids or state pids (I can't look them up right now...):
TCC flags
brake pedal switch flag
3-2 solenoid

Be sure to be logging in 10 fps mode.

SSpdDmon
June 24th, 2005, 07:25 AM
I don't see a tune parameter for this.

To better see what's going on, post a log chart showing:
VSS
RPM
SPARK
TP
MAF
MAP
IAT
ECT
TFT
PRND
Current Gear
PCS
last shift time
last shift error
TCC PWM

and also these pids or state pids (I can't look them up right now...):
TCC flags
brake pedal switch flag
3-2 solenoid

Be sure to be logging in 10 fps mode.

Hmmm...deja vu :?

http://efilive.com/forum/viewtopic.php?p=12538#12538

joecar
June 24th, 2005, 11:32 AM
Yes, deja vu aka cut-n-paste; we want to see basically the same info in both cases.
8)

vetteboy2k
June 25th, 2005, 12:34 AM
I will get this info, however its going to have to wait alittle while. Going to the tuners today to have them get started on the TTI Twin Turbo install.

vetteboy2k
June 25th, 2005, 12:41 PM
Just an update on the Turbo install as I am quite excited :!: :!: :!:

Motor was pulled from the car. Heads, intake, cam, all removed. Turbos mocked up for clearances and ground down motor mount and front cradle slightly to clear turbo wastegates. Oil pan dropped to drill and tap for oil lines.

Not bad for a half day :!: :!: :!: