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
Help! JDM D15B lean at part throttle
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SnaggleToof
- Posts: 2
- Joined: Tue Oct 19, 2010 4:20 am
Help! JDM D15B lean at part throttle
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SnaggleToof
- Posts: 2
- Joined: Tue Oct 19, 2010 4:20 am
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...
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...
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yangeghatch
- Posts: 14
- Joined: Mon Nov 14, 2011 7:26 am
Re:
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.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...