211Ratsbud

iTrader: (1)

sorry i was speaking of your ignitiin timing..

foxbat

Is this a Vipec screen? -35 degrees absolute + 3000rpm kick (20%) would produce around 7psi

211Ratsbud

iTrader: (1)

So are you saying the ignition is 35 retarded from the main map or the actual ign timing is -35? That's where I'm confused

Yeah I have a vipec on the snowmobile heh..

foxbat

I'm not sure, since anti lag has it's own table & you don't have to adjust main timing map. If I had to guess, 'absolute' could mean that timing would be -35 when anti lag conditions are met

211Ratsbud

iTrader: (1)

Ah, well you see my inherit confusion , I just think that some sources cite degree's retarded from main map and degrees total timing and dont differentiate..

regardless, Ive been looking at the WOT box. It is a splice in ignition cut device. Jason suggested using that to cut ign to get enough mixture in the exhaust. I can see where this would be usable. It ties in to both coils, but Im not sure if it cuts one coil at a time, or both simultaneously.

199 usd..

Howver just looking at the instructions it may very well be something that is simple to make since I dont need the user interface and launch control etc..

211Ratsbud

iTrader: (1)

I achieved 6-7 psig tonight with light throttle input approx 30+% and the timing map set up like this. Im pretty sure I was only limited by the fact that the timing tapered off around that PSI range

foxbat

Aren't you hittin -ve timing area during wot?! I think that -ve timing area is too large, you even have -ve's in above 0 boost areas! If you set a throttle kick, measure rpm/load w/kick & you shouldn't need any -ve beyond kick range.

211Ratsbud

iTrader: (1)

you must have missed how I am achieving my alt maps..

the factory sas solenoid wire goes to a resister set up to the alt maps switch. When the SAS solenoid is active I get my alt maps.

It is still on a toggle.

18-20% gives 5psi via omni map sensor roughly 140 load

30% gives 7psi roughly 150ish load

afrs measuring low 11 im almost maxed out rich to get this ..

I can post a log later tonight

This is with boost in the manifold so I bet the SAS valve is shut. I havent finished the control regime for that because I want to have a boost only source for measuring the boost in the UICP and the idea you gave me for the throttle kick got me sorted on my idea today... My goal is to increase the flow through the SAS system to roughly equivelant of 30% throttle.. but achieve much higher measure of airflow through the system..

foxbat

Oh yes, I remember how you explained alt maps, this means that you got the alt-map routine to work, nice!
I think if you could go richer in AFR, you might get more pressure,, why afr max is 11?
How do you plan to increase SAS flow? is it through adjusting SAS tables in the rom?

Keep me posted
P.s. when you discussed the ignition cut with Jason, did he confirm whether the subie group_n rom include an ignition cut or not?

211Ratsbud

iTrader: (1)

Jason never go back to me.. Ive been asking him some questions probably got too much :0


Well one way i can go with this is to ditch the SAS system all together and I have achieved overrun boost on the stock ecu..

but... the person that I am being never satisfied tells me to come up with a nice solenoid to bypass air into the intake manifold, but control it like a Tibuc valve on a PWM... or even a simple air bypass solenoid with no duty cycle

then this is going to passify me until I get 4 runner setup like a WRC fresh air system. At this point the large solenoid valve on a PWM or NO/NC circuit can just be used in that department. There's some options here and I would like to hear your feed back foxbat. Aside from making the factory hardware work, we can atleast make the stock ecu do what we need.


Or if I could figure out the ISCV tables enough to get the steps on decel to be maxed that may provide enough aswell.

foxbat

The goal is to achieve 7-8psi overrun boost (I won't set it any higher even with a stand alone) & it has to be switchable, sas or no sas, it doesn't really matter. The simplest way to do it is probably the best way :]

211Ratsbud

iTrader: (1)

Sounds very doable just need to nail down a bypass into inlet manifold.

It would be nice to have a patch but the switch is already incorporated as far as allowing the alt maps to enable.

211Ratsbud

iTrader: (1)

foxbat

Looks promising! but:
Why the big difference between actual AFR & MAP AFR?
Why negative timing is only -10 rather than -20?
30% & 4000 are high for a throttle kick.

211Ratsbud

iTrader: (1)

this was on overrun, I ran up my load because i made more boost than i intended. I was coasting down a hill here in second gear after a 3rd gear mid rpm pull

Im on Speed density so manifold pressure will make my load go up. So I have to place the timing in the appropraite cells.

i assume my VE needs work, or and theres a clear difference in the VE/burn pattern with the timing that negative

{edit}

this is no way fully functional just yet, but like you said its promising. I need to work on the SAS pin map switching. I dont think it switches back to the map right away. I REALLY might just have to put a switch on the throttle that says its at the HOME position and let it trigger the alt map when its at HOME. What is nice is the conditions that have to be met with the factory output so maybe I need to work on my transition from ALT maps > normal maps. THIS is why i have the timing taper back to normal. I just didnt expect to make 150 load on overrun so I ended up landing in my taper.