25DB Widebody Rsti

But wait..
There is more !!!


I've fiddled around with CAN bus and now I can control the boost levels from the Motec Pdm keypad !!!



Here is the Link ECU wastgate and CAN tables.
Its relatively easy concept.
Digital input 10 is Meth signal from Aquamist controller.
If its ON it reads the 1 column.
Say its a last position 0.6 that equates to Boost target of 49.3.
It then goes to WDC table and looks up 49.3.
This drives the boost solenoid from 24.5 up to 26 Duty cycle.

-mav- said:

So you basically use single value as boost target? Or this table is some sort of modifier? TPS is no longer considered for target boost?

Click to expand...

Correct.. I just set a target boost based on my switch input.
No TPS. RPM based modifier.
Looking at the table above: For 34.8(Map) (20psi boost) at 6000rpm run a WG of 15%.

So yes.. I could potentially reach preset boost level with partial throttle. (Higher boost levels should require more gases.) (if thats your concern)

-mav- said:

I have AEM methanol kit and I'm thinking of good way to integrate it with link ecu. It has controller that accepts electronic input and I can use spare output to generate request for meth, but I'm not sure how to get feedback from the system back to ECU...

Click to expand...

First thing you need is a safety output from your AEM meth kit. (basically on when all green and off when a fault is detected)
That will turn on with the AEM system and it will switch the ignition and fuel tables.

Next you could either use fuel/ignition table 2 or use the correction 3D and 4D tables.
Once AEM is green your fuel table switches and injects less fuel and your ignition table switches and adds more timing.


Here is my Aquamist setup:



DI5 --> digital input from Aquamist. (the safety switch input)
Aux 6 --> PWM output to control the duty cycle of the meth injection. (this is only so I can change the settings without opening up the Aquamist box)
Fuel table 2 activates on DI5.
Ignition table 2 activates on DI5 as well.

Key point to test is that once AEM detects a fault or flow issues that it grounds the safety switch causing Link Ecu to switch back to Fuel 1 and Ignition1 or disabling a 3D,4D table.

Off for a long overdue update.

I've decided to send my injectors to clean and flow test.
Was getting some knock at places that I dont think I should..

Here are the charts they sent.

Pre-cleaning.
Not terrible but still a 2% deviation on injector #1 with total spread of 3-4%.



Post cleaning.
Total spread is down to 2% on average.
From what I read ID runs their injectors at about .5% spread.



Anyhow.. the cool part is I can correct this in the Link ecu.
Making it almost .5% deviation.. as this is the minimum correction that Link allows.



After install it was time for leak check.. and there was a tiny leak from the fuel rails.
With the Cossworth fuel rails I have, I've changed the original o-ring to a smaller one so I can have a mechanical lock with the ORB fitting.
Little did I know that the rails are garbage.

Instead having a groove cut into where the ORB goes, all they did is a chamfer.


Here it is squeezing the o-ring so both surfaces can mate.
With the old o-ring there was no mechanical contact and I suspect this is why people have engine fires, the only friction is on the o-ring itself.



Right next to the therads is the chamfer. What it should have been is a groove so the o-ring can fit almost flush. Then once you tighten the ORB both surfaces will meet creating a lock.



This is how much the o-ring had to be crushed in order to get both surfaces to meet.



So if you in the market for rails.. pay attention to that chamfer..
If it has a chamfer instead of a groove its garbage.


Last but not least .. I played a little seamstress....



And here it is installed.

I love companies that that do more than sell a product.
Its no surprise that Injector Dynamics are "THE" injectors to buy.
Besides flow matching to 1% they also post cool vids on youtube.

One of them that I watched was on fuel pulsations and fuel dampeners.
Subarus do come factory stock with a dampener or two...

Since I've replaced the lines I removed mine..

After watching the video I looked at my map and I do have two spots that either have very high volumetric efficiency or there are some fueling issues.



This could also be due to the fuel oscilations...
So I've bought the Radium fuel pulse dampener.



What can I say.. The quality is pretty disappointing.
First thing I do is, I check if this thing is air tight..
Attach the hose and simply suck on it..
What do you know.. it leaks straigt out of the box !!!!!
No biggie right ?
All screws are tight.. so I open it up.



What do I find ?
A metal shaving right between the green cap and the membrane.
What do you know.. the surface is already scratched !!!!



But wait.. there is more..
That shaving wasnt the issue..
The problem was the nipple leaking.
It came loose pretty easy.. and this is what came out of the nipple area.
It wasnt metal.. and didnt look like something used to seal.



Now.. I had to re-seal the nipple thereads with teflon tape.... TWICE !!!
As on the first try it leaked again.


Finally I had to shorten the feed hose to accomodate the dampener.




Here its sits installed.



Sadly my laptop just died while logging so I cant tell if this does anything.


Last but not least.. got a foam canon and was testing it out...