A question of timing..
Thread Starter
Member
Joined: Apr 2004
Posts: 33,838
Likes: 23
From: Sunshine Coast - England UK
A question of timing..
Hi all,
Up to what boost can the standard ECU, with FMU keep the timing in check? I imagine the ECU has a limited range that it can advance, does anyone know what this is and proven it on a dyno?
I will be installing mine soon and want to stick with the FMU for a while, and concerned about ignition timing.
Most interested.
MB
Up to what boost can the standard ECU, with FMU keep the timing in check? I imagine the ECU has a limited range that it can advance, does anyone know what this is and proven it on a dyno?
I will be installing mine soon and want to stick with the FMU for a while, and concerned about ignition timing.
Most interested.
MB
Former Moderator
Joined: Sep 2002
Posts: 45,352
Likes: 427
From: Mother F'in TN
The timing controller from Vortech has it's own internal map sensor, and is prgrammed from Vortech. The map supplied pulls under 3deg total timing retard.
It can be reprogrammed if you have the R4 software from Split Second.
The OEM ECU operates normally with the Timing controller installed. The controller sends an offset crank position input signal to get the PCM to retard the timing. The PCM still thinks it is running as much advance as possible.
I had to pull an additional 3deg accross the map to get my car to not detonate on oxygenated winter fuels, in the 4-5K rpm range.
It can be reprogrammed if you have the R4 software from Split Second.
The OEM ECU operates normally with the Timing controller installed. The controller sends an offset crank position input signal to get the PCM to retard the timing. The PCM still thinks it is running as much advance as possible.
I had to pull an additional 3deg accross the map to get my car to not detonate on oxygenated winter fuels, in the 4-5K rpm range.
Thread
Thread Starter
Forum
Replies
Last Post
chainsaw1968
S2000 Forced Induction
9
Mar 2, 2013 05:21 PM