Well I had to retune 3 guys on SD. One being done at shootout, and the other 2 from WA.

Possibly weather induced, which causes most tunes to go south or user changes mods or gets tuned in bad weather conditions, or boost leaks etc. to many factors to mention.

My tune requires my assistance when weather changes here. I see over a point in AFR change on e85 just from a 30F drop. MAF is just as time consuming as SD in reality if you are after a "perfect" tune as far as AFR's go.

5pm in summer time vs 9-10pm at night yields .5 change almost from personal experience here in PA on E85 with gutted MAF.

btw whats this then?

Option 3 - Thanks to l2r99gst 96533706 (v7 + Live Map + Speed Density) -

Set Immob. HEX to 0x0058 (check to make sure your old ROM was the same)
Live Map implmented
Speed Density Implemented using the Fuel Temp sensor as input for Temperature

Dont bust my ***** just because I read information on the forum that I consider valid since its posted by reputable sources.

 

Do you really think it's using an actual fuel temp sensor for a temp input? Can you imagine how worthless that would be for tuning?

No, it's using the *spare* *input* to input the IAT (GM) data into the ECU because that is not used on USDM cars because there is no actual fuel temp sensor.

I'm busting your ***** because you are posting incorrect information and/or challenging information incorrectly.

 

well when you're trying to tell me theres no fuel temp sensor on a evo and a google search comes up with 1000+ results saying there is then of course i will have my doubts on you.

http://www.roadraceengineering.com/e...-ecuwiring.htm

 

Also, to be perfectly honest, yes I did think it was using the fuel temp sensor for its input. I heard people saying that Aaron could tune SD without any additional IAT or sensors, that he could just use an existing sensor on the car, but would be 10% off at times. Just saying what Ive heard. Ive never researched into enough to see if it was right or wrong.

 

I used the fuel temp for my gm iat input.

 

Yes you used the Fuel Temp input for the GM IAT input... which is what I said.

There is no used fuel temp *sensor* on the USDM Evo.

That is why that input can be used for the GM IAT for the SD conversion...

I'm not sure why this is so hard to understand.

More info to help you understand:

https://www.evolutionm.net/forums/ec...e-logging.html

https://www.evolutionm.net/forums/ec...y-patches.html

Which actually refreshed my memory. So I will add this EDIT: There is a Fuel temp sensor but it's not used for anything important so it's INPUT (I.E. ECU input) is used for something more important to us, like SD or MAT logging.

You probably "heard" wrong as AFAIK you need a capable MAP sensor and some way of monitoring intake temp for the SD conversion, as this is how speed density works.

 

another words the wire exists, but you cut it and splice in the GM IAT to it (or remove pin and repin it). Whats this stuff I hear about not needing any aftermarket IAT's that Aarons doing or is that rubbish info?

 

Exactly.

No idea, first I have heard of it. I would ask Aaron.. he is always up to cool little things...

 

You can run without it. I didn't but I did have a friend on an evo9 that ran without an iat without any issues. Either way guys this is Rocks build thread, lets cut this OT crap out.

 

honestly id say that it dont matter what the dyno reads as long as it performs at what ever event your gonna set it up for. who cares if the dyno says 350 if it runs a 9 sec slip you know?

 

Thank you I have no interest in SD so enough of that garbage in my thread

 

I agree, the SD conversation went way to far. I want video rock are you going to be get dyno videos?

 

thats is a pretty aggressive dyno if your running 9s on 350 whp LOL. yea your right to a extent I still expect a certain number for me to consider this blue bomber right. people like to see that there money was well spent 350-500 for 17k+ just does not add up boss

 

they should video it should go down tomorrow im call the shop once i get off work and talk to jorge to get some type of confirmation for sure

 

make sure its in HD.