Got a startup tune and im lean lean lean....can any one help
6.2, 95lb, s475, btr stage 3, 4l80, 410 gearsDAIRL 75 VERT AS IS.hptdb1.hpl
AFR IN THE HIGH 19s ON E85......
Got a startup tune and im lean lean lean....can any one help
6.2, 95lb, s475, btr stage 3, 4l80, 410 gearsDAIRL 75 VERT AS IS.hptdb1.hpl
AFR IN THE HIGH 19s ON E85......
Last edited by PERFECTTRANSPORT; 01-13-2023 at 10:07 PM.
Is that 95lb injectors?
Yes
Afr says 19.....on e85
Need to start with OS change to 2 bar OS, then the correct fuel injector data. Have you changed the map to a 2 bar map? What style fuel system are you running? Fuel pump?
also alot has to change to run e85 for stoich. also its a GEN 4 ecm
His tune is scaled for the large injectors from the looks of it. No idea if it's scaled right because he didn't say who's injector they are and if they came with data.
Also he's not running a alcohol sensor, which doesn't help him at all.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Once I realized it was a Gen 4 I realized it was scaled.
Is wideband being logged on the scanner? Didnt see it on this one.
Not yet but its screaming at me.....anyway to get more fuel acrossd the board
what size pump and type boost referenced regulator you using?
You have to provide us with more information about the injector data and tell us why you are running E85 without a alcohol sensor.
Can't just smack it fuel and hope it works. If other parts of the tune are wrong you will just make it worse.
Last edited by 5FDP; 01-14-2023 at 12:57 PM.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Understood. Fic injecters, walboro 450, i dont have to use e85, can drain it in the am, fuel regulator connected to intake vacuum for boost reference. Im not smacking it as if the tune is on hit. i know its off so this is just idle and take it slow. Has not seen 3k rpm as of yet, so no boost. When i get on the gas a little the afr drops to 15, 16 range. i will have to locate wiring to connect wideband to hpt. its all tucked away for some reason....lololol
Last edited by PERFECTTRANSPORT; 01-14-2023 at 01:04 AM.
i am using 3 bar sensors
Here is what I have
L92 6.2
built 4l80
Btr stage 3 turbo cam
95 lb fuel injector connection
s475
4.10 gear
magna fuel 4303 750
circle d @3600
275/35/26
aeromotive 13101 efi reg. A1000 injected bypass
-8an feed -6an return
6.2 truck intake
ls9 maf
ls9 map sensor
fuel pressure 58 psi @ idle
90lb run log 93
db1 on e85
Last edited by PERFECTTRANSPORT; 01-14-2023 at 07:32 AM.
What maf sensor are you using? IAT sensor calibration and IAT2 is different in the tunes you attached. What is the fuel pressure at idle? 58 psi?
6.2 truck intakeOriginally Posted by Mr.z0611
ls9 maf **********
ls9 map sensor
fuel pressure 58 psi @ idle
90lb run log 93
db1 on e85
Last edited by PERFECTTRANSPORT; 01-14-2023 at 07:31 AM.
DAIRL 75 VERT AS IS E85 Try.hpt
Try that on e85 and see what happens
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