Individual injector trim?
 

It looks like if you run full sequential injection you can manage each injector's fuel trim. Anyone doing this with great success? Just kinda curious.

To do it accurately and see gains, you need four widebands.

So you think that taking the flow info from Witch Hunter and putting REQFUEL for the average and then trimming each from that would not be worth the time? Too many other variables?

Also, here is another approach... multiple EGT rather than multiple AFR:
Megasquirt-3 MS3 AFR Safety System

Really? How would that even work? I mean logistically where would you put four widebands?

...and sequential injection.

Plenty of room on Savington's headers.

https://www.miataturbo.net/attachmen...et-j2wqrrl-jpg

Easy peasy. Reverent actually has exactly that on his miata right now.

I tried to find a pic, but can't find it. I'm sure he can re-post it

I get the idea from the nuge's pic, so basically you end up with individual runners on each exhaust cylinder and each one gets a wideband.

Strangely enough, I can't find the pic with the widebands on the headers.

https://www.miataturbo.net/attachmen...1&d=1380352144

https://www.miataturbo.net/attachmen...1&d=1380352046

Did you see much deviation cylinder to cylinder Rev?

0.1-0.2. And guess what, cyl #4 is not the "hottest" (old m.net myth), and there's no direct correlation between EGT temps and AFR, ie the hottest cylinder is not the one that runs the leanest.

So where is the data on individual cylinder temp?

And you are talking EGT not coolant right?

Dann

What data do you want? Yes, EGT, not coolant temps.

I thought cyl 4 was only hot on the earlier cars, with the MK2.5, the adjusted headgasket fixed the issue?

Me too, and coolant only not EGT, Id have thought egt would have to do with flow in the IM and fuel rail.

Dann

I just said what the m.net myth was. :)

No turbo for you Reverant? Or is it somewhere down the line?

lol @ individal widebands

4 channel EGT

http://imageshack.us/scaled/landing/13/egtsnavsn2o.png

okay, Tom.

Yep, basically all the dual feed fuel rail fanbois were saying #4 was starving, etc.