If we're not careful, between all the salad bowls we've cut up and Chris' bowl pirated off of a Caddy, we're going to run Hypertech out of the market for those TBI powerchargers!:idea:
Type: Posts; User: CDeeZ
If we're not careful, between all the salad bowls we've cut up and Chris' bowl pirated off of a Caddy, we're going to run Hypertech out of the market for those TBI powerchargers!:idea:
Thank you both for offering this insight!! I have been busy with other things past few days, going to get back to studying this now.
Chris,
Please elaborate. I'm trying to understand what...
Looks as good as the powercharger. But you made it so it's better!
Ditch that spacer ring that raises the aircleaner housing up. GM used a drop base aircleaner, but it hit the coil or anything else so they then threw that little spacer choke ring on there. TBI...
I tried 14 MS in Max Asynch BPW, Makes it sluggish on throttle tip in, and still lean pops when you smack the throttle open.
Chris, here are the AE paramters, I returned them to stock. Also here...
It is at the stock value of 12 msec. Think it should be changed? If so, to what?
I have been increasing the Delta TPS and MAP AE tables by 10, 20 or 30%. No matter what I do, it still lean pops. Increasing the AE seems to help. But, by the time it's enough AE to reduce some of...
Well, more efficient heads require less timing. Or so I've read anyways. That's what got me to thinking that. But, I believe you. It really seems like based upon what you're saying, that with these...
I never had to mess with those settings in my 3 bar SD '411 running my 75MM LQ4... 8 PSI boost. I decapped the stock truck injectors and slapped 75 in the entire IFR table. The only other thing I...
It seems like I'm getting somewhere with wrastlin' this AE into submission. I'm starting to get a better understanding of the what/how/why. AE is just to compensate for the drop in manifold vacuum...
I thought fast burn was just another name for the OEM vortec castings? Yeah the heads are linked in post #5.
It's a 355, (.030" over) The Holley TB is probably a tad overkill, but I found it for...
How's yours running? My TB measures nearly 52 MM... One of the reasons I suspect AE is what is causing this lean pop.
Interesting. I know this is a lean pop because I can see it on the WB02 gauge itself, as well as the logs. I have wondered if I don't have enough timing now though.
Well what I was saying is...
I'm still working on getting the AE acceleration enrichment to play nicely on my TBI. I'm still getting a lean pop when the throttle is planted open quickly.
I have copied over every AE parameter...
BJDR is the one I started out with on my recent 350 4L80 build. The Open Loop AFR table is stupid rich in that table. Try looking at one from a big block bin of the same mask and copy it over. If you...
BJYL bin is $0D mask, not $0E.
I had the exact same issue recently, I'll post my bin tomorrow for you to look at. The open loop afr table that steveo mentioned was crazy rich in the stock $0E bin...
OEM. Original to the truck AFAIK so 27 years old.
I've seen similar stuff of varying viscosity, this stuff was very loose and wobbly though.
This is how it looked when I opened it...
Cut open a failed MAP sensor from my latest TBI endeavor to find that the conformal coating had turned to jello. So soft it apparently plugged the vacuum port on the sensor itself.
...
Yeah that makes sense. That almost surely was the cause of my strange issue. I just didn't properly route or twist the wires since I added them in to this truck having never had them, wanted to make...
Gentlemen,
The root of the problem has been isolated..... Wait, almost rolled into a Clutch song... OOps... Anyways, looks like I fixed it.
Today I had some free time and the weather was a...
I think you may be right. I read somewhere that the PCM will shut the force motor off defaulting to max line pressure.
Where does the 4L80 ground??? Or is it the solenoids grounding as provided...
The first image is what I would expect the force motor to look like on the logs. (The teal line) This is from a previous log before this issue happened.
The second image is of the force motor...
I think I have made some progress on the rich issue. After fiddling around with the injector flow rate what seemed to help the most was to take the VE cell that it idles in, and the surronding cells...
Yeah, I just thought that wiring in the TCC must have screwed something up cause that's when my newest problem showed up that I've described lol. I now know that isn't the case cuz like I said I...
Pin S from the 4L80 for the TCC PWM is going to E11 on the PCM, yes