Post your Timing and PSI
Jun 25, 2013 | 08:23 PM
#21
On gasoline(up to E10) I would run atleast an 11.5afr, timing varies from setup to setup. I have seen same setup on two different vechicles not take the same amount of advance. One makes it best power 2-4* less than the other. Pretty close HP/TQ numbers on both. Why? Maybe someone with more experience than me can answer, I haven't learned enough to understand that part yet, lol.
Jun 25, 2013 | 10:11 PM
#24
Instead of blanket timing numbers, anyone care to share how they ramp in their timing in regards to boost?
If using a custom operating system, at what boost level do you start pulling timing from the timing table?
I'd love to be able to rent out some dyno time and really fine tune alot of this stuff. It's alot to ask for on the street, especially when the rear tires are begging for mercy...
If using a custom operating system, at what boost level do you start pulling timing from the timing table?
I'd love to be able to rent out some dyno time and really fine tune alot of this stuff. It's alot to ask for on the street, especially when the rear tires are begging for mercy...
Jun 25, 2013 | 10:25 PM
#25
Bring it in a little higher under the full boost curve area's and where you need power to get it up on the converter. Bring it down a hair thru peak TQ (5200) (peak cylinder pressure) and ramp it back in a hair up top once cylinder pressure starts to drop (6k+). This will keep the HP/TQ up on the top end and still keep pressure at or below where it was during peak tq.
Keep your AIT normal and my "normal" is below 130, don't beat on her hot "200+ eng coolant" with out taking some timing out on both accounts. Again this is on the safer side of the street for setting up timing.
Thats just how I go about it though.
Jun 25, 2013 | 10:41 PM
#27
Bring it in a little higher under the full boost curve area's and where you need power to get it up on the converter. Bring it down a hair thru peak TQ (5200) (peak cylinder pressure) and ramp it back in a hair up top once cylinder pressure starts to drop (6k+). This will keep the HP/TQ up on the top end and still keep pressure at or below where it was during peak tq.
Keep your AIT normal and my "normal" is below 130, don't beat on her hot "200+ eng coolant" with out taking some timing out on both accounts. Again this is on the safer side of the street for setting up timing.
Thats just how I go about it though.
Keep your AIT normal and my "normal" is below 130, don't beat on her hot "200+ eng coolant" with out taking some timing out on both accounts. Again this is on the safer side of the street for setting up timing.
Thats just how I go about it though.
Unfortunately, trying to keep coolant temps and AIT down here in Texas currently is a bitch!
Jun 27, 2013 | 11:38 AM
#29
Would running too rich cause detonation? I dropped my AFR from 11.3 to 11.0 to stay safe above 10psi on 91 octane, around 11 deg of timing, and now I'm getting knock retard at WOT around 4500 RPM without any other changes to the tune.
