Anyone do a build (or know of someone who has done a build) with individual widebands for each cylinder?

This set-up, as opposed to a wideband in the manifold after the exhaust runners gather, gives an accurate afr reading per cylinder so that you know how exactly each cylinder is running (ie too rich or lean etc...).... it will net you more power if tuned correctly, AND save from detrimental engine damage

I plan on doing this some point in the future..

 

I have never seen a set up like this probably because of the extreme heat. Why not get 4 EGT's and do the math to correlate?

 

I have this setup on my Honda f4i crotch rocket. But for an evo im not sure other jordanti said use egt temps of individual runners. You could use 4 widebands but that would drastically mess with manifold exhaust flow. Good luck finding something keep us posted if you do

 

while I am good in math, I dont know what procedures would need to be done whilst tuning/how to use the info from the egts instead of the widebands

 

idk if anyone here gets a copy of D Sport, but theres an article in there about a guy who did a build on his S2k and did this... thats where I got the idea to see if it has been done on an evo viii, ix, or x

 

From a tune-ability perspective you can do it (individual cylinder AFR's), just need to have someone make you an exhaust manifold set-up for this. Probably a good idea for a track car, as cylinder #4 is known to have intermittent leaning issues.

 

I've seen an MKIII Supra with a 2JZ setup like this, he was running a Motec ECU. I'm pretty sure you'd need a standalone to take advantage of something like this. OEM ecu isn't capable of running each cylinder differently

 

The OE ECU can only do all four at once, so a stand-alone will be required. Whether you can find a wideband sensor that can deal with the heat and pressure is questionable (but not automatically impossible). I, personally, would never do any serious tuning via EGTs; maybe you're smarter or braver than I. Sorry to be a downer, but I don't see this being easy. The only thing that's come up that I agree with is finding out which cylinder goes lean the most often and put your EGT sensor is that particular runner with a really bright or loud alarm. On a 4G63 mounted with #1 to the left (e.g., a 2G DSM), #2 was the cylinder most likely to go lean (which surprises many people, as the standard thinking would predict #1), so that's where you should put the EGT sensor. No idea about 4B11s.

 

Why? And what kind of power are you looking to make--1000+hp?

 

+1^

 

nvm...

 

EvoX ECU has the capability to trim individual cylinders in regards to fuel

 

Based on four different sets of fuel trims or just a fixed offset for each cylinder?

 

fixed offset (3d table per load/rpm) for each cylinder

 

Thanks.