ok so here it is..I street tunned my car yesterday due to putting a new turbo on..I tunned my idle and drivablity to 14.5 a/f and low boost to 11.8 a/f..well today I go out to drive to the store and my car is idling at 13.4 a/f and is at 10.2 under boost and fully warmed up (195 coolant temp)!!! only thing that changed was the air temp..yesterday my intake temps where right at 95 to 100 degrees and today they are at 70 to 80 degrees!!

I am just kinda lost right now..I thought the air temp sensor would compansate for diff air temps? I held a blow dryer to my turbo and got my air temp up to 100 degrees and the idle went right back to 14.5 (dead perfict a/f and clean idle on 1000cc injectors at 900 rpm)..is this a flaw in the hondata? or am I doing something wrong? any advise?

 

hondata doesn't have a correction for air temp.

 

well that would explain it..

is there anyway to work around this?

 

AEM Or another standalone. Always bugged me too.

 

I got a AEM system here but it does not go in till the new engine does..

 

 

I've seen this problem before. Sometimes it was the Hondata, sometimes it wasn't. Are you noticing any actual CHANGE in the performance of the system other than the idle, such as hiccups in freeway driving or in other weather conditions?

 

bump for your question.. i thought cooler temps = leaner a/f

 

yeah it changes all the way around..colder=rich idle and rich all the way thru boost hot=where I tunned it to!!!

 

Yea it definitely shouldn't be richer with colder IAT temps. Over one whole point is a lot of change. Even just at idle it doesn't seem like it should change that much.