Custom Tuners with IC/Intake/Exhaust mods

elusiveaura

Senior Member
Joined
Aug 15, 2016
Messages
1,047
Reaction score
906
Location
Tennessee
Car(s)
18' Civic Type R CW , 18' Accord 1.5 Touring. 17 SI Sold
Country flag
Looking to get some feedback from others who may have similar setups as I do and custom tuned. Can you tell me what your fuel trims are after completing a custom tune? If possible, as close to possible of just having intercooler, intake and exhaust only as your performance bolt ons.

Thanks!



 

AdamD19DFK8

Senior Member
First Name
Adam
Joined
Jul 11, 2019
Messages
373
Reaction score
158
Location
Maryland
Car(s)
2019 FK8 Type R, 2007 Civic Si sedan
Country flag
I'm pretty sure fuel trims go off of what the MAF sensor at the air intake reads. You generally don't want to be above or below -4/4% compared to the stock intake with short term fuel trim. Some intakes may need afm corrections. The PRL HVI I have is very close and no modification needs to be selected in hondata. I had a mishimoto before and that one was pretty close as well. There was a mod for it though, but it didn't really change anything.
 

jasonjm

Senior Member
First Name
Jason
Joined
Jul 29, 2018
Messages
827
Reaction score
400
Location
Pennsylvania
Car(s)
Type-R
Country flag
I'm pretty sure fuel trims go off of what the MAF sensor at the air intake reads. You generally don't want to be above or below -4/4% compared to the stock intake with short term fuel trim. Some intakes may need afm corrections. The PRL HVI I have is very close and no modification needs to be selected in hondata. I had a mishimoto before and that one was pretty close as well. There was a mod for it though, but it didn't really change anything.
Ive had to touch my AFM a tiny bit with the PRL.
 

Top