aparreira9586

i had my car tuned at dyno for WOT but now im doing my own street tuning in vac cuz im pulling -20/-30 fuel trims LOL i have 550cc and my tuner didnt tune ANYthing, so i was wondering for all of you that have been turboed for a while what are your trims?

I KNOW HOW TRIMs WORK and that u want them as close to 0 as possible and ive read the threads dealing with this... ive done mine a few times pulled the ecu fuse and trims are out of wack so im doing themm again, untill i get it right

and to you DIY'ers if you guys can post or email me ur injector maps from ultimate id like to compare (if your running 550cc)

aparreira86@yahoo.com

aparreira9586

also how is ur transition into boost with the ultimate, is there hesitation from the AFR from not going into open loop?

Slow_2az

i had thew FIC my ltft were 0 and occasionally +1 ....stft were around +/- 3 tops

aparreira9586

noone huh?

Carlanga

first thing I did was to make sure my O2 map was spotless in the vacuum area (FIC) per afr gauge, then I went into the fuel map and added fuel to lower the +fuel trims and subtracted to up the -fuel trims. The Long terms might take a couple of minutes to follow the short terms. It seems like you should take about 20-30% off of fuel to kick the fuel trims down in vacuum.

What I like to do is to use the injector size change option.

Ex. If I wanted to add 5% of fuel I would do the following:

700cc x .05 = 35
700 - 35 = 665


Then right click the table and under new injector input 665 and under old 700.
If subtracting fuel just flip the numbers. That will give you a good and safe idea to start. I found this myself when I started tuning for e85. I started by blending and eventually added the full 30% needed for e85 over 93 pump gas.

Hope that helps.

If you could, send me ur map with a good description of ur setup.
carlangaok@hotmail.com

SoFloTC

iTrader: (3)

dude my fuel trims while cruising are like -30 lol wtf? and when cruising i hit a 10.00 wall studder at like 3k but if i start spooling at that area its ok just cant like cruise in it.. so weird.

m6ar2cel6oTC

Why don't you just contact mike instead of posting your issue. I'm sure mike will help.

SoFloTC

iTrader: (3)

cuz i need to go actually get a tune from him 3 hours away not waste his time playing with a basemap... and hes busy lately anyway so im trying to do it myself until i go up there.

ElevationTC

Chad, this is how you make people look bad..

First.. Your on a basemap. That YOU tuned................................

Secondly. the fuel trim that your speaking of on the fic software is not your fuel trims from ecu. You need a scan gauge to see those.

SOooooooooo...









Thanks for the help marcello! Any updates bud?

SoFloTC

iTrader: (3)

dude i never said anything about what im running having anything to do with you mike... i said i need to go get tuned by u and right now im ____in around with a basemap myself? whats the harm in that? nothing in my post was directed at you besides saying i dont wanna waste your time so how are u taking that post the wrong way. calm down ging.

m6ar2cel6oTC

Naw I ordered the street pressure plate which it will be rated to 595 and it's half the pressure then the extreme one I had I already got all the bearings and should start working on it by next week. I'm going to orlando this weekend I wish I had my car I would have driven to get my generous tune from you but sucks I don't have my car ready. Hey did you ever take the pan out and checked what we talked about?

paul_dezod

My trims on the xB2 are max at -5 and most at +2-3

ElevationTC

Yup, It worked =D It ended up being the timing plate was damaged due to a cheap agency power pulley being damaged and it cracked the key and damaged the plate!

m6ar2cel6oTC

Wow who would have known. So you took out the timing cover then?

skinnayyy

my fuel trims are always at 0 +- 3 sometimes in everything but idle. idle.. well that's a whole 'nother story ><