Hondata

Hey guys, i had a buddy help me get started on my tune... turns out i had a blown exhaust manifold gasket and when i replaced it the tune leaned out. I have no idea how to modify fuel maps and unfortunately he isnt very available to help me out and all local tuners are booked 6 weeks in advance...

At part throttle (highweay cruising) my a/f is high 15's to low 17's...

Anyway, here is my setup along with my map and a few datalogs... if anyone can help me out i would appreciate it...

JDM D15B Civic

Vitara Low Comp Pistons
Eagle Rods
ACL Bearings
Micropolished crank
Hastings rings
ARP head bolts/rod bolts

RC 550 CC Injectors
Small garret T3 AiResearch turbo

Try... please observe and datalog air flow ratio

Thank you! it is now much better...

And by looking at what you modified i was able to figure out how to adjust the values while driving so i made some tweaks that made the drive much better, here is the new map and a datalog from a stop to highway speed.

One thing i noticed though, the tune seemed perfect and then i stopped to wash the car (maybe 10-15 minutes) and when i started it up it idled super lean, like high 17's and sputtered, driving was also real lean high 15's to 16's... but after 5 minutes of driving it went back to normal how it was before i stopped...

SnaggleToof wrote: One thing i noticed though, the tune seemed perfect and then i stopped to wash the car (maybe 10-15 minutes) and when i started it up it idled super lean, like high 17's and sputtered, driving was also real lean high 15's to 16's... but after 5 minutes of driving it went back to normal how it was before i stopped...

I also have that same problem. I think I may need to work on the Fuel Trim>Idle and Light engine Load. Any help on this would be great. I think the problem is that the engine is at cold start mode and causes it to be lean.