creating a basemap 2 liter sleeved gsr evo 560cc injectors

tandrew21 · Post by **tandrew21** » Tue Apr 28, 2009 1:17 pm

where is offset FV under injector calibration?

tandrew21 · Post by **tandrew21** » Tue Apr 28, 2009 1:19 pm

where is this one box you are talking about. i thought the battery offset table was that table with the 5 columns and the different voltages corresponding to decimal values.

ckretvix · Post by **ckretvix** » Tue Apr 28, 2009 1:19 pm

4th box from the top...

tandrew21 · Post by **tandrew21** » Tue Apr 28, 2009 1:26 pm

ahhh so that is the box i use to tweak the afr when the lights turn on and my afr drops a whole point. Interesting. What increment of values should be put in here?

ckretvix · Post by **ckretvix** » Tue Apr 28, 2009 1:34 pm

Whole numbers.

Post by **Gaskleppie** » Tue Apr 28, 2009 1:37 pm

Overall fuel trim does NOTHING when the battery voltage is changing!! The battery table is meant for calibrating the injectors to voltage changes!

ckretvix · Post by **ckretvix** » Tue Apr 28, 2009 2:40 pm

Gask, I dont know where your going with this. You basically said 2 posts back that offset is going away and it doesnt matter and now your saying it is, blah blah. I think we understand whats going on here...

Post by **Gaskleppie** » Tue Apr 28, 2009 4:56 pm

The fuel offset is going away. In Rom .64 it is gone already. The battery compensation table will always stay and should be used for voltage changes only. Dont get mixed up here.

tandrew21 · Post by **tandrew21** » Tue Apr 28, 2009 5:27 pm

so if injector offset is discontinued in the new rom, i will have to get my car to idle manually by tweaking the map? On boosted setups do you guys check disable ignition correction above 1031mbar? So what about overall fuel trim, will that be the easiet way in order to get the tune to idle upon startup? Do i also want to disable PCS under purge valve settings? i run a catch can and eliminated the black box and pcv valve...

Post by **Gaskleppie** » Wed Apr 29, 2009 1:03 am

The overall fuel trim is for compensating engine capacity, compression ratio and/or fuel pressure etc. So when you are using a bigger engine than the base rom was intended for, use the overall trim to correct this. a lot of guys use it to get the idle part right also, but I use it only to get the biggest part of the map right. I tune the idle part manualy. Like this you have the less work to get the maps right. Just how you look at it

yes, you can disable ignition corrections and also disable purge.

tandrew21 · Post by **tandrew21** » Wed Apr 29, 2009 10:17 am

great thankyou for the insight we are putting the 2 liter gsr hatch on the road friday. So all weekend i will have time to tunetagged up.

VTEC Inside · Post by **VTEC Inside** » Wed May 13, 2009 7:44 am

Very informative thread for newbies like me. I had most of the questions in my head but was afraid to ask

I am driving my car with eCtune basemap made by me but it's not good at all and I will start again from scratch. Good luck with tuning tandrew21!

Post by **calvin** » Wed May 13, 2009 11:37 am

Idle your car correctly is the basic. tuning will go from there. Never select small portions of the map(1 cell) select bigger area's when you begin tuning. Remember most of the time if e.g. 400 mbar 3000 rpm is lean on a new basemap 1031 mabr and 4000 rpm will also be lean. So you select big parts of the map to get your afr dialed in. Later you will fine tune.

9400RPMS · Post by **9400RPMS** » Wed May 13, 2009 9:17 pm

Do it in small portions, it sounds like your overwhelming yourself.. give yourself a set state and start from there.. When i tune i usually start cars at 2k rpms and go to 4k and tune that portion.. I also start by tuning WOT first, and when i'm done i move the partion throttle maps up to under the WOT maps and fine them down or up, which ever it needs.. There's a ton of writeups on tuning.. if u need anymore help, pm me, i could walk u through some of it as well via a phone or a email.

VTEC Inside · Post by **VTEC Inside** » Thu May 14, 2009 4:25 am

9400RPMS wrote:Do it in small portions, it sounds like your overwhelming yourself.. give yourself a set state and start from there.. When i tune i usually start cars at 2k rpms and go to 4k and tune that portion.. I also start by tuning WOT first, and when i'm done i move the partion throttle maps up to under the WOT maps and fine them down or up, which ever it needs.. There's a ton of writeups on tuning.. if u need anymore help, pm me, i could walk u through some of it as well via a phone or a email.

Where I can find a good write up on tuning for beginners