Thought I would add that if you are at 15mph and lift, the truck will slow to idle, if you are at 25mph and lift, the truck will slow to idle, there's something about 20 mph that will not release the...
Type: Posts; User: hufsresto
Thought I would add that if you are at 15mph and lift, the truck will slow to idle, if you are at 25mph and lift, the truck will slow to idle, there's something about 20 mph that will not release the...
Here's a good one to rack your grey stuff on. I'm happy with the tune but this idle thing is drivin me crazy.
If you get above 5.5 mph the truck will idle up to 7 mph and hold, to make matters...
This is all good but what about the E78 truck?
Is there an injector driver module used to fire the DI or just the ecm?
Engine is in a 1970 Chevelle. 1997 L29 4l80e, stock gm 7.4l maf draw through, lenght of 3.625" ID tube is 13"from the maf to a large K&N filter,
from the maf to stock TB is a 3.625" ID 90 degree...
Everything looking good at 6.5 psi, (6:04" on scan) changed pulley for 8.5 psi and at 9:36" on the scan, the maf flat lines and fowls things up.
2 bar map not yet installed. I have no problem...
Verify temp with an inferred thermometer. With 10% (approx) alcohol the stoich is going to about 14.4 I hope that is not your full power ratio. Your ok at 14.68 for light loads.
Take a close look at the hot wire in the maf, look to see if it is damaged,bent ect..., it may also be dirty. Any way to swap a known good maf from the same application into yours? Does engine rpm...
Any way to move that H2O/meth nozzle to post throttle body, drill and tap 1/8" pipe.
I am using the alcohol side of this pcm to run propane. Using a signal generator to switch the tables when the propane system is enabled.
Under FUEL, stoichiometry I have the first 3 blocks on the...
Any update on this yet, I've got a twin turbo viper project chompin at the bit.
Try lowering the Dynamic airflow disable to 900 and the re-enable to 800.
Any reason for the flat injector pressure delta?
Ethanol Fuel %. What type of signal are you applying on that pin?
For anyone following this thread it turns out that it was knock enrichment kicking in even though I had the lower limit of 2k rpm set. I had to set the EQ ratio to 1 from 2k rpm on down, problem...
Well the catalyst test wasn't it. At 70 mph cruise it will stay in closed loop with a commanded afr of 14.4 on gas and 15.5 on lpg. At the lower speed in the 60's it persists.
What other fuel gain...
Any time some one else has been in the data I Check all the important stuff.
Thank you, I'll give that a shot. I would never have thought to look there.
Folks,
I need some help finding the fuel gain while on cruise at 61 to 69 mph. The commanded afr goes to 12.31 (.794eq ratio) and may stay there for up to a min. while on gasoline or propane. I...
Cost me 2 credits, got it programed. At only 8 psi I can use pe. Had good success with that on a LS1 with a magna charger 9 psi. I put a file in the tune repository for the LS1, (I left pe ramp in...
Guy's
Just for the hell of I went key on and the fuel pump cycled and the ces light lit, I pluged into the obd2 and read the file, it was the 2001 4.3L V6.
I think I'm still in the same boat with...
Thank you.
Folks, my customer brought me a blank 2001 0411 pcm, I need to flash/upload the 2001 Chevy express van 5.7L tune to it.
Can I licence the downloaded file and upload it to the blank pcm or is there...