How To Tune an Evo
Jan 4, 2008, 06:01 PM
#182
I just compared the JDM VVT map with USDM stock, they looks big different, so there is no problem with change the USDM map to JDM without changing anything else?
I am sooooo new on this.
I am sooooo new on this.
Jan 6, 2008, 04:31 PM
#187
Hey this is an awesome thread 
So I was dyno tuned by ams back in sept and just friday I installed some 720cc injectors and I've changed the injector scaling to as follows:
I haven't changed anything else then just taking away a little timing to eliminate a few knock counts.
I also logged fuel trims too
Fuel Trim Low 100%
Fuel Trim Mid 130.469%
Fuel Trim High 98.438%
and these stay solid at those numbers
I've always had a lopey idle with the 272's But I'm just getting a ****ty idle just kinda dips like it might choke & die and its settling down to like 800 maybe below its almost there just seems to be off a couple bush hair's
what to do to remedy this?
So I was dyno tuned by ams back in sept and just friday I installed some 720cc injectors and I've changed the injector scaling to as follows:
I haven't changed anything else then just taking away a little timing to eliminate a few knock counts.
I also logged fuel trims too
Fuel Trim Low 100%
Fuel Trim Mid 130.469%
Fuel Trim High 98.438%
and these stay solid at those numbers
I've always had a lopey idle with the 272's But I'm just getting a ****ty idle just kinda dips like it might choke & die and its settling down to like 800 maybe below its almost there just seems to be off a couple bush hair's
what to do to remedy this?
Jan 7, 2008, 05:05 AM
#188
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Hey this is an awesome thread
So I was dyno tuned by ams back in sept and just friday I installed some 720cc injectors and I've changed the injector scaling to as follows:
I haven't changed anything else then just taking away a little timing to eliminate a few knock counts.
I also logged fuel trims too
Fuel Trim Low 100%
Fuel Trim Mid 130.469%
Fuel Trim High 98.438%
and these stay solid at those numbers
I've always had a lopey idle with the 272's But I'm just getting a ****ty idle just kinda dips like it might choke & die and its settling down to like 800 maybe below its almost there just seems to be off a couple bush hair's
what to do to remedy this?
So I was dyno tuned by ams back in sept and just friday I installed some 720cc injectors and I've changed the injector scaling to as follows:
I haven't changed anything else then just taking away a little timing to eliminate a few knock counts.
I also logged fuel trims too
Fuel Trim Low 100%
Fuel Trim Mid 130.469%
Fuel Trim High 98.438%
and these stay solid at those numbers
I've always had a lopey idle with the 272's But I'm just getting a ****ty idle just kinda dips like it might choke & die and its settling down to like 800 maybe below its almost there just seems to be off a couple bush hair's
what to do to remedy this?
your 4 volt votage is crazy high... that has to be wrong. Why dont you try pulling your neg off your battery and resetting your trims and start again. Other then that, raise your idle to about 900 and see how that goes
Jan 7, 2008, 05:47 AM
#189
off the top of my head they were last at
fuel low 100%
fuel mid 50 something
fuel high 50 something
I will update those numbers probably at lunch when I can grab my laptop
Jan 7, 2008, 08:49 AM
#192
I've just logged fuel trims with evoscan and mitsulogger I don't have a wideband available right this sec
and if thats so then mine isn't + or - 10% and that would explain the ****ty idle correct?
Last edited by wesside; Jan 7, 2008 at 09:26 AM.
