ISCV control system disassembly
Jan 24, 2013, 09:14 PM
#377
Code:
<table name="ISCV Demand Post Cranking (sub_1F1F8)" category="ISCV Control" address="54f4" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="6fde" type="Y Axis" elements="8" scaling="Temp"/>
</table>
and it can't harm testing it.
If that's the wrong table I'll go through the code again to search for it with my very little skills
Last edited by domyz; Jan 24, 2013 at 09:18 PM.
Jan 25, 2013, 09:04 AM
#379
-Jamie
Jan 26, 2013, 06:07 AM
#380
Rather than clutter this thread up, I created a new thread with detailed info on the start-up fuel and ISCV tables. Here is the link:
https://www.evolutionm.net/forums/ec...cv-tables.html
-Jamie
https://www.evolutionm.net/forums/ec...cv-tables.html
-Jamie
Jan 28, 2013, 05:17 PM
#381
Jan 29, 2013, 02:12 PM
#382
For some reason now I cannot get my idle above 2000-2200 and it revs up and down and up and down .. I can't figure it out? Is there a cap somewhere I'm missing?
Anyways 2000 ish rpm worth of air flow didn't do much for my boost
Anyways 2000 ish rpm worth of air flow didn't do much for my boost
Last edited by 211Ratsbud; Jan 29, 2013 at 02:14 PM.
Mar 11, 2013, 07:36 AM
#383
I'm now trying to fix a small issue that I have since a long time. When I accelerate moderately, as soon as the BOV opens when I let go the throttle, I lose all acceleration, making the drivetrain go back and forth a little bit. (synapse, no preload, soft spring, recirc / new engine mount filled with 60A polyurethane). To explain the problem, what is really annoying is not much the back and forth motion of the drivetrain, but more the first bucking motion which makes the passenger slightly go forth in the seat belt if you know what I mean.
Changing my driving habits kinda patched it (letting off the throttle slower and press the clutch as soon as the BOV starts to dump)
I will try to mess with RPM adder table to see if I can add some hang to the car. Also I read that metal intake pipe could mess the MAF reading when recirc. So maybe switching to SD would help.
I'm not aware of any other way to fix that (fuel/timing) ?
I'm pretty some of you already had something similar to fix in the past ?
Changing my driving habits kinda patched it (letting off the throttle slower and press the clutch as soon as the BOV starts to dump)
I will try to mess with RPM adder table to see if I can add some hang to the car. Also I read that metal intake pipe could mess the MAF reading when recirc. So maybe switching to SD would help.
I'm not aware of any other way to fix that (fuel/timing) ?
I'm pretty some of you already had something similar to fix in the past ?
Last edited by domyz; Mar 11, 2013 at 07:44 AM.
Mar 11, 2013, 08:58 AM
#387
Problem got worse since I installed the omni map sensor, the grimmspeed BCS, the AEM intake all at the same time and flashed the first v7 rom. (early 2011)
So I changed both front and back engine mounts. Maybe 25% better. (summer 2011)
Last week, I filled a brand new front engine mount with liquid 3m. Maybe 25% better.
Issue is still there a little bit. On the street, I can't really modulate the power on lift-off, as soon as the BOV opens I lose my acceleration. It's kind of hard to drive the car smoothly with that engine braking all at once...
If I lift off until the BOV opens, then I let the throttle at the position where the BOV opened, car acts like that:
arbitrary numbers (tps/acceleration):
30% 0,3 G (lift off starting)
28% 0,25 G
26% 0,20 G
24% 0,15G
24% BOV opens
24% -0,3 G (some bucking + engine movement)
24% -0,2G
24% -0,1G (normal engine braking)
24% -0,1G (normal engine braking)
The more I think about it, the more I'm sure it's a MAF reading issue when the BOV's opening. SD should be perfect for me.
If you want to take a look at the tune I'm willing to share it.
edit: And I don't think it'd be a problem for a majority, but I don't have much tolerance for this anymore.
Last edited by domyz; Mar 11, 2013 at 09:10 AM.
Mar 11, 2013, 09:33 AM
#388
A simple check would be to disconnect and plug the lines going to the BOV and lightly cruise around and see if the problem disappears with the BOV not opening with vacuum. If it resolves the issue, its definitely from the recirculation.
-Jamie
-Jamie
