Resolved ECMLink V3 SD

[clipto]

So I just got ECMLink v3 full and was wondering do I need those AEM AIT sensors or those AEM 3.5 bar sensors. Can I just run SD of stock parts without the MAF?

 

[Tyeler18]

Um what stock parts are you going to use? Considering we don't have an IAT or MAP sensor.....

 

[Arthris]

No. you need a IAT and a MAP sensor

 

[snowborder714]

I'd suggest reading this, as it seems like you don't understand what speed density is.
sd101 [ECMTuning - wiki]

 

[clipto]

I have been reading on sd for awhile but my friend has sd and said he doesnt have any type of sensor ait or bar 3.0 on his sd setup. So I was just checking with you guys.

 

[delta448]

Either he's lying or he's just ignorant.
You need both an intake air temperature sensor and a manifold absolute pressure sensor for a speed density calculation. If you don't have either of those, then it's called alpha-n, and fueling is controlled by throttle position and rpm alone.

 

[snowborder714]

For ECMlink, an IAT is not absolutely necessary, but would be recommended.

 

[delta448]

Correct me if I'm mistaken Brian, but in the case where IAT is not input, doesn't ECMLink's algorithm just use a constant in place of IAT?

 

[snowborder714]

I'm honestly not sure.

 

[clipto]

So I am trying to run it without any thing more I have to keep buying. So my assumtion is I don't really need a AIT as much as it is nice to have one I don't need one? Also for the bar MAP thingy do I need one of those? Or boost just read through MBC?

 

[Tyeler18]

So I am trying to run it without any thing more I have to keep buying. So my assumtion is I don't really need a ait as much as it is nice to have one I don't need one? Also for the bar map thingy do I need one of those? Or boost just read through mbc?

Yep just hook a vacuum line up to the ecu. You'll be good to go.

 

[snowborder714]

Please try and read the posts again in this thread - they contain the answers


I would be interested to hear how you'd plan on reading boost via a manual boost controller though.








If you don't want to, here it is.

You NEED a MAP sensor. It's HIGHLY RECOMMENDED to have an IAT sensor.

 

[SupremeDsm]

So I am trying to run it without any thing more I have to keep buying. So my assumtion is I don't really need a ait as much as it is nice to have one I don't need one? Also for the bar MAP thingy do I need one of those? Or boost just read through MBC?

You need a MAP sensor. And a MBC just adjust how much boost is being produced. Maybe you should use that search function at the top of the forums.

 

[clipto]

Sorry for being a newbie and being in the newbie section posting help on this issue. I was just seeing what methods are used for sd. I tried reading up on the ecmlink but as I am not super pro with cars I thought I could find out what fully to do. So I need a map bar sensor thx...

 

[snowborder714]

If you're unsure what speed density is, why do you want to switch over? It will just make tuning harder than using the stock MAS.

 

[clipto]

So I know what it is I just don't know what parts are fully required for the ecu to read speed density. I heard many times you do or don't need a ait sensor. Also not very much input on a bar map I know there is some black electric box on top the intake manifold I thought could be used for the reading's but I guess it doesn't work thanks for advice. I will just go to the shop when they get it setup and have to take extra time to order parts if need be before I can tune.

 

[snowborder714]

It sounds like you need to do a lot of reading on ECMlink/tuning/speed density, or find a tuner who knows this info. I'm not sure what you've been reading that's had "not very much input on a bar map".

If you're dead set on going to speed density before even really learning about it and how it differs from MAS tuning, then pick up these two things. They have everything you need.
ECMTuning, Inc.
ECMTuning, Inc.

 

[daplatano91]

Brian if you do not have an ait input you can adjust the Sdtempwieghing table to 0 so I will rely solely on coolant temps. Its not recommended but can be done. To the OP you absolutely must have a map sensor for speed density to function correctly. Also the sensor is called a map sensor. Bar is a unit of measurement for air pressure.

 

[clipto]

Yea English Racing is ganna tune it. I just wanted to make sure I get all the parts before driving up there, I try not to hastle them with questions so I come to the newbie forums on here. Anyways I should be fine with just a map sensor and my coolant temps have been amazing sence I just redid everything for cooling. I don't drive it alot so not to worried about super dialing in everything so not worried about ait sensor. Thanks for input ordered a 3.0 bar and getting it tuned tuesday I hope if they have time.

 

[daplatano91]

You don't need the Ait just if your coolant temps are not consistent. You need it to help you car run more consistently when the weather temps change.

 

[jrohner]

So I know what it is I just don't know what parts are fully required for the ecu to read speed density. I heard many times you do or don't need a ait sensor. Also not very much input on a bar map I know there is some black electric box on top the intake manifold I thought could be used for the reading's but I guess it doesn't work thanks for advice. I will just go to the shop when they get it setup and have to take extra time to order parts if need be before I can tune.

Speed density isn't a sensor read by the ECU, it's calculated by the ECU with use of a map sensor, IAT sensor, and maps in the ECU (which you have to adjust). Since you're getting rid of the airflow sensor, the ECU needs to calculate the airflow instead -- making it more work to tune because you have to tune the VE map not just the timing and AFR.

The sensor on top the intake is basically a map sensor, but it doesn't read boost, only vacuum.

You don't need the Ait just if your coolant temps are not consistent. You need it to help you car run more consistently when the weather temps change.

I think you meant intake air temp not coolant temp.

Yea English Racing is ganna tune it. I just wanted to make sure I get all the parts before driving up there, I try not to hastle them with questions so I come to the newbie forums on here. Anyways I should be fine with just a map sensor and my coolant temps have been amazing sence I just redid everything for cooling. I don't drive it alot so not to worried about super dialing in everything so not worried about ait sensor. Thanks for input ordered a 3.0 bar and getting it tuned tuesday I hope if they have time.

So you're going to spend a bunch of money getting it tuned, but not the $20 or whatever the IAT costs so you can have a really consistent tune? This kind of confuses me.

 

[LiquidX]

While not required an IAT sensor is HUGELY recommend and I'm confused as to why you aren't getting one.

 

[daplatano91]

I think you meant intake air temp not coolant temp.

I meant both. The ecu uses the intake temp to determine the density of the air coming into the motor. If you don't run a intake temp sensor the ecu will have to rely solely on coolant temp to guess the density of the air.
VV

Anyways I should be fine with just a map sensor and my coolant temps have been amazing sence I just redid everything for cooling.

 

[clipto]

Wicked input I was just trying to make it less things in the engine bay wether it be even 1 less sensor I have to worry about. I am not agianst getting anything to do it propper, but if it really isn't needed and people run fine withouth stuff like that I am down. But if its like a $20 sensor or whatever I am down to get it. Just taking whatever advice you guys give me.

 

[boost97gst]

Clipto, they sell a really cheap SD setup right on ecmtuning.com. They even have the harness adapters so its a PnP situation, no soldering! I want to say its less than 200 for the whole deal. I dont know why you want SD though. To get rid of maf and clean things up a bit? Or are you shooting for horsepower greater than an evo8 maf can support(or even a 2g maf?). I'm not too eductated on SD but i know that a 2g maf will support up to atleast 400whp if not 500. And an evo8 maf will go even further. And both are plug n play and very cheap and easy to work with.
And i think its an IAT not an AIT as you keep referring to it as. Trivial but thought id mention . Good luck dude.