The tune you sent is MAF only, I didn't change that. Under Airflow/Dynamic, High RPM disable is set to 100 rpm, which means anything over 100rpm uses only the MAF, no VE table.
If you do a...
Type: Posts; User: pknowles
The tune you sent is MAF only, I didn't change that. Under Airflow/Dynamic, High RPM disable is set to 100 rpm, which means anything over 100rpm uses only the MAF, no VE table.
If you do a...
So this is a MAF only tune, is this due to the cam? I see your STFT's swing wide on decel suggesting the MAF tune could use some work. Also, under spark/Advance your overspeed and underspeed timing...
looks like it's hitting a stall limit and then cranking open the electronic throttle or IAC to save it from stalling. Timing jumps around a lot as well. Can you post your tune and the stock version...
Wow, this thread is a blast from the past. I sold my 97 vortec almost 10 years ago now. Sorry guys, I don't see HPT going back and supporting these 25 year old PCM's.
If it where off by exactly an hour I would say time zone? Here is what I see at 57m and 28sec into the file.
106802
Created time is off exactly an hour, but there is no 09:45:45.652 like you...
Would love Honda support. I have a civic, a brand new 2L turbo Accord, and the two Chevy's in my sig. Would love to tune the Honda's.
The scan starts at 09:05:05.422. Post wrong one?
post your tune.
Are you on 93 octane? 13 degrees at 4psi seems very low.
High octane table from 2200rpm and .72g to 3200rpm and .80g looks a few degrees low, but depends on what fuel you run. Are you getting knock where you want more power? I would bring burst knock...
I scaled due to the 4063 lb/h limit on the MAF table. Unscaled I would hit the 4063 limit around 10psi of boost pressure. I'm using an LS3/LS7 MAF in a 4" tube. The injectors are 1000cc/min from...
I'm up at 9psi on my stock bottom end 2001 LQ4 with a 78mm turbo and on my way to 12psi. I tune on E85 to be safe and see knock in boost. Still dialing this thing in, but 4-6 psi is not much. If...
It's a scaled tune, scaled by 66.7%, so ~.75L goes to ~.50L in scaled tune. Yes boost referenced. Didn't catch the offset vac table, thanks!
Updated the offset vac table today and went for a...
Speed density does solve a lot of these problems. I flashed a speed density tune back in my truck today. Throttle response and smoothness have taken a negative hit. I'll drive a around for a few...
Not DCFO. I turned off DFCO and relogged. See tipin and tipout files. You can see it goes a little rich than a little lean on tip in before going into PE. Tip out shows a huge lean spike. Not...
Yes, but as I'm backing off it goes lean (peak at 24.2 seconds), then comes back close to stoic, then goes into DFCO. I'll disable DFCO tomorrow and try again.
Tune and log attached. VE is perfect (at least the regions I hit up to about 9psi) and MAF has been tuned. It runs great, just trying to get rid of these lean spikes. Note, I'm doing this tuning on...
I'm working on transient fueling to remove lean spikes on throttle entry and throttle exit on my 2001 Silverado 6L with 76mm turbo running on a 2002 Tahoe flux fuel tune. I'm running a MAF tune...
Is VE correction factor the same as the VE predictive airflow that gets used in a blend SD and MAF tune? I'm running a two bar custom OS on a 2002 Tahoe flex fuel file. I've noticed that when I run...
Well I looked through my later unscaled stock MAF logs, unscaled LS7 (card style) MAF logs, and then scaled LS7 (card style) MAF logs. I actually see this behavior in all of them. It always starts...
On my scaled MAF tune, I plotted Dynamic Airflow vs my MAF curve, see below. Notice Dynamic Airflow (magenta) follows the MAF curve (black) until 6700 Hz then deviates then follows again at 8600 Hz....
Post the two tunes.
Non Scaled tune attached.102438
I have a 2001 Silverado 6L with a 78mm turbo system running a 2002 Tahoe flex fuel file with 2 bar applied. I've run this thing in OL, SD, and MAF tunes for the past few months with no issues at...
Did you zero any torque tables? I zeroed either Spark retard vs torque reduction or Torque loss %vs spark retard (can't remember which) and idle rpm's would hang.