I'm looking to SD swap my IX soon, but i want to be crystal clear on what i need to do so that i can pull this off with no surprises.

i figured there would be a "how to" for this, but i haven't found anything. I plan on makeing one when i do it.


I know i need a multi-bar MAP sensor, 3 or 4 bar seems popular(id get a 3bar for the increased resolution)

i also need a IAT sensor, i assume putting this in the charge piping just before the TB is best so you can use the IAT correction tables to alter timeing and such .

now, i'm assuming the IX has a factory map sensor, so are there any aftermarket sensors that will plug rite in?

if the car does not have a factory MAP sensor, where do you wire the AM units into?

I'm also assuming you wire the IAT sensor into the factory harness at the plug for the unused MAF sensor?

is there a table you adjust for map sensor scaling here? there has to be a table that you adjust depending on how "big" of a sensor you get as its output voltage is totally dependent on its range.

thats it for now, thanks allot guys!!!!!!

 

you mean you'll get a 4bar? a 3bar is only good for 30psi a 4bar 45psi.

you can actually set the rom to use fuel temp sensor and tune the car with no IAT, but if you change weather a lot may as well wire a IAT in.

best location is closest to intake manifold, but you can experience sensor heatsoaking, so people locate in the upper ic piping.

on the sd rom theres map ve and rpm ve, those are the 2 tables used the most.

read this its a good starter point: https://www.evolutionm.net/forums/ec...ched-roms.html

omni 4 bar map sensor plugs right in.. you need to use the search feature on the forum theres tons of data about this stuff.

 

Your 3bar options are jdm 3 bar or evo X 3 bar. That and IAT is all the hardware you need. And maybe a new intake to take out the MAF. The rest is reflash with tephra v7 for SD, and tune with the VE tables.


Tscompusa, speed density 2.0 is out last month right? A while ago people were talking about incorporating barometric pressure (instead of a set baro value) into SD 2.0. I see from RoadSpike's thread that there is a baro correction, but is it running off a separate sensor? Cause if so the OP would need a baro sensor too.

Also whats REALLY needed with SD 2.0 is a guide to tune with 3D VE tables. For novices like me and OP its hard to understand how to use it, but its kinda pointless to stay with the 2D VE tables when the newer version is out.

 

you should ask that in the 2.0 thread roadspike made. the 3d map is easy. just log the airflow count from maf then convert to your SD.. the perfect SD setup will be 1:1 with MAF:SD. thats all were doin.. trying to clone the same thing the MAF does.

can use evoscan map tracer to get datapoints or raw logs or other progs like ecuEdit.

 

Haha, k. I hate asking questions in those official threads because I don't wanna get hit with "take your car to a professional tuner and let them do it!" Yea thanks for helping me learn.

 

The baro auto tune up function in the 2.0 rom relies off your mdp sensor so if you installed a omni 4 bar it would be tuning it off of that. It really just for startups and wasn't meant as an altitude correction I just set it back to static once the car fires up.

Tunning the 3d VE map should be straight forward enough just log wideband, afrmap, kpa, and rpm and make adjustments to if your wideband is reading rich in some area then you lean it out by dropping the VE.

This is assuming of course you have setup the base load tables up pretty well to begin with otherwise your going to notice the 3d table will slop in some direction or another instead of being a typical bubble looking thing. You should be able to tune the VE map with the notes from the previous 2d version just it will be more kpa/rpm specific not just rpm.

 

thanks for the link! it'll take me a bit to read thru it all, but i'll get there.
my main questions are about wiring, i get that the omnipower map sensor will P-n-P, but is it safe to just wire the IAT sensor in the MAF plug? or is there a preferred spot other then that?

id use the 3bar for the increased resolution, the 4bar has a larger range but lesser resolution as you only have 5v's to work with. smaller range=more accurate sensor increments along the voltage range.

thanks allot for the help!!!!!