Interesting info on B3702 Injection timing
It maybe easier to think of it like a 24hr clock.Originally Posted by joecar
Cycle starts at midnight, IVO happens at mid day, inlet closes at 8pm, EOI needs to be around 10.30am, 9.5hrs before 8pm.
If your IVO earlier at 11am, you need to advance EOI earlier, 10.5 hrs earlier instead of 9.5hrs, before 8pm.
The boundary is at 8pm.
If it a gen 3, boundary is still 8pm, EOI is at 10.30am the following day, 14.5hrs later or 13.5hrs later if IVO happens at 11.00am instead of 12pm
Last edited by Gelf VXR; March 24th, 2014 at 06:47 PM.
UPDATE: Finally made it home and was able to advance the injector timing like we were discussing. I only rolled it forward 24* since that is how far the new intake valve is advanced from the stock cam. So far the smell of the fuel has gone down quite a bit. I had to take out a bunch of fuel at idle because it was pig rich but the rest of the VVE table remained basically the same. I figured the whole fule table would be rich down low but it was only below 1,000rpm. The seat of the pants feel down low is drastic. A bunch more power on tip in and normal driving. The big deal to me is that I gained 3mpg on average over the last four tanks of gas. One thing I haven't been able to do or change yet is the dynamics. There is now a very slight stumble at minimal throttle input. Like backing out of my drive way. It almost acts like I am not moving the throttle when I am to a certain point and then it takes off. There needs to be more effort put into the tune right there. The other thing I noticed is that during cold start up and OL my commanded fuel is static at 13.0 but the WB reads 15.0 now. Any deviations in fueling from 13.0 causes a bit of surging that goes away pretty quickly. These issues could be unrelated to advancing the injector timing but I will work on them and figure it out. Hope this helps anyone that was following along.
02 Z06, 573/530rw N/A 416, 10.21@136.12.
For early Gen3 the the EOI was 4.77 x 90 = 430 deg, 70 deg. difference than with the 5.55 figure.
97 Vette 6spd, CamMotion Titan2 LS1 cam, TSP 5.3 StageII heads, Vararam intake, Z06 manifold, ARH headers/cats, Z06 catback, Monster Stage2 clutch, 04 Z06 pcv, new style knock sensor(late98 to 04).
Using FlashScan V1 with NGK-AFX Wide band
What OS is everyone using... maybe I will release my cax were ido have the injection boundary in efilive...
Gelf Send me your email via PM to email it to you.
"All that is needed for the triumph of evil is that good men do nothing..."
I am running OS 12611938. I have an 07' TBSS running an E67 ECM. I don't have the table you do.
02 Z06, 573/530rw N/A 416, 10.21@136.12.
Because this is for a GEN 3.... you don´t need that parameter.
"All that is needed for the triumph of evil is that good men do nothing..."
Gotcha.
02 Z06, 573/530rw N/A 416, 10.21@136.12.
PM sent, I'm using a gen 4 E40What OS is everyone using... maybe I will release my cax were ido have the injection boundary in efilive...
Gelf Send me your email via PM to email it to you.
E40 doesn't have this value....
"All that is needed for the triumph of evil is that good men do nothing..."
12212156.
Last edited by joecar; June 11th, 2014 at 04:49 PM.
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