RACEPAK

hello everyone
i am having some trouble with a car i'm tuning with a s300 v3 and rc750's.
while i am using the hondata supplied offsets for the rc750's, i cant get the car to have normal idle afrs until i put -90 at the overall fuel trim tab, anything lower then -90 give me afrs of 13.0-12.0

when using crome/neptune offsets i can get normal afrs (13.7-15) with -30 overall FT.
any idea on how to solve this?

all my tests were in open loop. and everything in the options is disabled, this car was running mint with crome,

thanks

motoxxxman

Can you upload the current map? I'll take a look at it

RACEPAK

yes sir
thanks

https://www.hondata.com/forum/download/file.php?id=8253

motoxxxman

I'm looking at the map right now. what engine is this? and what did you use for a base map when you created this map?

Masterl1nk

Do you have an aftermarket fuel pressure regulator? Which fuel pump are you running?

Maybe you need to set a higher value when you scaling injectors (like 800cc)

RACEPAK

hi, thanks, its a D16Z6, i used the p28 map,

the car was running on crome and made 370whp on a mustang dyno with my last tune, before the hondata swap, we wanted to "upgrade"

thanks

RACEPAK

thanks,
hello
i'm using a genuine walbro 255lph and a holly bolt on regulator,

about the scaling, i find it odd to have the need to "change" the injector size for it to work, i never had this issue on neptune ectune or crome,

thannks