Third Generation F-Body Message Boards

 
Page 1 of 4
1
2
3
4
Search: Posts Made By: Bones232
Showing results 1 to 50 of 169
Search took 1.20 seconds.
Forum: DIY PROM
06-10-2013, 09:17 PM
Replies: 6
Views: 5,341
Posted By Bones232

Re: V6 Memcal mod to run in V8.

Does this mod work for the 7427 v6 memcal also?
Forum: DFI and ECM
10-23-2012, 12:11 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

At the time i was using WUD version 2.1f. It had filter value for the fuel pressure transducer, which i had set to 80%.

I just finished reading the ~700 post thread related to driveablility...
Forum: DFI and ECM
10-19-2012, 12:57 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

Yes disconnected.

It's currently tied into one of the ports at the front of the TBI. I've also had it plugged into one of the ports on the intake.
Forum: DFI and ECM
10-19-2012, 12:05 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

I can re-create the issue while simply reving the car in the driveway. My fluid filled gage doesn't vary much at all... Which one do i believe?

I have the aeromotive unit (13301). It comes with...
Forum: DFI and ECM
10-19-2012, 10:23 AM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

Holy Crap! Thats some solid fuel pressure.

So the next logical question is...How do it get my FP to look like that? Can you tell me how the fuel system was set up in the sample data you posted?...
Forum: DFI and ECM
10-18-2012, 04:10 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

Does anyone else have a datalog of their fuel pressure? I'd love to compare notes.
Forum: DFI and ECM
10-17-2012, 08:28 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

Well, I was able to dig up a couple of datalogs of my FP.

The first graph shows the FP during a gradual rpm increase to WOT in 3rd. The vacuum was disconnected from the regulator.

The second...
Forum: DFI and ECM
10-17-2012, 08:03 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

If i understand what your saying, your looking for the pressure drop from the inlet of the TBI to the injectors. With my setup i'd most likely connect a pressure guage in place of my cap on the...
Forum: DFI and ECM
10-17-2012, 02:50 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

The regulator still controls the pressure. Everything upstream of the regulator will be at a set pressure as determined by the regulator. When the regulator relieves pressure through the return port,...
Forum: DFI and ECM
10-17-2012, 12:05 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

When i was using EBL i did log fuel pressure. I'll see if i can find some old logs. As i recall the fp would vary more under partial load than WOT.

Thinking along similar lines i've replaced the...
Forum: DFI and ECM
10-16-2012, 04:15 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

Thats what i was looking for. My fueling demand changes drastically the longer the engine runs (presumably from heat). Where you have cosistency day to day, i don't seem to have it minute to minute....
Forum: DFI and ECM
10-16-2012, 03:11 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

Does yours vary with underhood temps? I say underhood temps because i've datalogged cts, iat & mat and have found no definite correlation to the magnitude of the lean spikes. All i really know is the...
Forum: DFI and ECM
10-15-2012, 10:21 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

It sure feels like a lean condition. It pops and stutters like mad. It doesn't smell rich either.

I recently went the route of misfire. Changed distributor with a reman, icm, coil, wires, bypassed...
Forum: DFI and ECM
10-15-2012, 07:42 PM
Replies: 25
Views: 1,493
Posted By Bones232

Re: Mysterious lean spots.

I threw my o-scope on the driver side injector today. Viewed at the ECM, the wave form looks clean. Viewed at the injector, i can see some anomalies. The one that sticks out the most is at arrow #4...
Forum: DFI and ECM
10-14-2012, 08:11 PM
Replies: 25
Views: 1,493
Posted By Bones232

Mysterious lean spots.

Not sure if this is the best place to post this. Part of my problem is I don't know if this is an engine management problem or mechanical. I guess I'll start here.

So, I’ve had this engine for...
Forum: DIY PROM
11-04-2011, 08:51 PM
Replies: 0
Views: 385
Posted By Bones232

MAT Sensor without a home

I'm looking to run a MAT sensor and my intake does not have any provisions for such. Any recommendations on installing one? I was thinking of drilling and tapping a hole just under the TBI. I'm...
Forum: DIY PROM
07-09-2011, 09:29 AM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

My injector offset is set to 1.1msec. Its a bit on the high side. However, going to extremes sometimes helps me understand the impact various terms have on the calibration.

I'm thinking i'll drop...
Forum: DIY PROM
07-01-2011, 07:38 AM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

I don't have a problem adding to the xdf. I just need a reliable hack or list of parameter locations.

I'm a fan of DFCO and activate it whenever possible. However, Async was also activating...
Forum: DIY PROM
06-28-2011, 10:34 AM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

I've got the mandatory async disabled (rpm threshold maxed out), however it seems to async fire at low pulse widths. Is there a setting for min pulse width to enter async somewhere? Even with the the...
Forum: DIY PROM
06-21-2011, 11:52 AM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

Thats cool. I'll fiddle around with the async settings to see if i can get it to work. If not, I can plug my VAFPR back in and go from there. I had it disconnected so i could get the fueling straight...
Forum: DIY PROM
06-20-2011, 10:23 PM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

How do you go about tuning the async portion? Right now async sends everything into chaos. its not a very smooth transition either.
Forum: DIY PROM
06-20-2011, 10:03 AM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

Async is definitely on. Attached snippet verifies it.

Is there an option bit to turn off Async firing or do i need to change the thresholds so they are never satisfied?
Forum: DIY PROM
06-20-2011, 07:30 AM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

It's definitely killing the fuel. When it happens the afr spikes.

I'll check the datalog to confirm if async is active or not. I've disabled it in every other ecm i've use, i'm thinking i might do...
Forum: DIY PROM
06-19-2011, 09:29 PM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

Ok so I'm looking at my datalog and see the BPW dropping to zero. DE and DFCO are inactive at the time. See attached to view a snippet of the datalog.

What else could cause the BPW to zero out?
Forum: DIY PROM
06-19-2011, 05:04 PM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

Just a reality check. I was under the impression that the PW offset is the main injector offset for the code, the PW bias Table is an adder table for the offset and the PW threshold for short BPW...
Forum: DIY PROM
06-18-2011, 10:22 AM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

What is the setpoint for the "PW threshold for short BPW" and "BPW Offset"? I didn't see those scalars in the xdf you sent.
Forum: DIY PROM
06-16-2011, 04:24 PM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

Looks like you may be on to something. I had to add the BPW constants to my xdf and i found the following;

PW threshold for short BPW (L4963) was set to 0
Min allowed BPW (L4965) was set to 0...
Forum: DIY PROM
06-16-2011, 08:35 AM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

Ya threw a bunch at me there didn't ya....:)

If i try and tune out the lean spot, i'll end up with a spike in the 5k - 6.5k hz range of the MAF table and everything else will be pig rich.

I'll...
Forum: DIY PROM
06-15-2011, 09:12 PM
Replies: 31
Views: 3,379
Posted By Bones232

Re: Those familiar with TBI-MAF code please step inside...

Can you elaborate a little more? Am i missing a component?

By the way, I'm using a MAF off of a 5.3L truck (delphi 25168491)
Forum: DIY PROM
06-15-2011, 08:33 PM
Replies: 31
Views: 3,379
Posted By Bones232

Those familiar with TBI-MAF code please step inside...

I'm trying to understand this MAF fueling thing. I just recently switched to a 7427 ECM with the MAF $OD code. After setting the injector flow rate, the car runs ok. Its still rich just about...
Forum: DIY PROM
07-23-2010, 10:21 AM
Replies: 5
Views: 1,308
Posted By Bones232

Re: EBL - DFCO rpm drop to exit

no biggie....i appreciate everyone's help...
Forum: DIY PROM
07-22-2010, 07:56 PM
Replies: 5
Views: 1,308
Posted By Bones232

Re: EBL - DFCO rpm drop to exit

I'm not so sure. Case in point; Today on the way home when i decelerated down a hill, dfco went active at 1900rpm and remained active until 1500rpm (which is my lower threshold for dfco). My DFCO rpm...
Forum: DIY PROM
07-22-2010, 05:00 PM
Replies: 5
Views: 1,308
Posted By Bones232

EBL - DFCO rpm drop to exit

anybody know what time frame this parameter uses. Rpm must drop this amount in ??????(sec,msec,usec) to exit DFCO.
Forum: TBI
07-18-2010, 09:13 PM
Replies: 10
Views: 3,263
Posted By Bones232

Re: 350tbi MPG

I get about 16.5 most of the time. I don't run city and i don't run much highway. Mostly rural driving.

Mods;

1991 Camaro RS
Engine:
SBC 355; Vortec Heads; Holley 2" TBI w/ GM Injector Pod;...
Forum: DIY PROM
06-22-2010, 08:58 PM
Replies: 8
Views: 1,363
Posted By Bones232

Re: Two different chip adapters, 1 works 1 doesnt? WHY?

come to think of it, the g4 adapter (not sure which one you have though) i got from moates had a push in socket on the PCB which allowed me to use any type of ZIF socket i wanted. If your friend's...
Forum: DIY PROM
06-22-2010, 08:44 PM
Replies: 8
Views: 1,363
Posted By Bones232

Re: Two different chip adapters, 1 works 1 doesnt? WHY?

Back in the day i started out using the low profile ZIF socket (blue one). Eventually I wore it out and it failed me. The car kept cutting out and eventually didn't run at all.

I now use the...
Forum: DIY PROM
05-15-2010, 08:50 PM
Replies: 14
Views: 852
Posted By Bones232

Re: So....What's this mean to you?

Highest logged DC is 90%. I've used different injectors, different pressures with similar results.
Forum: DIY PROM
05-13-2010, 06:34 PM
Replies: 14
Views: 852
Posted By Bones232

Re: So....What's this mean to you?

That is exactly what i want. However, i need to figure out this EGR thing...

If my car was a couple years older i wouldn't need to worry about it....
Forum: DIY PROM
05-13-2010, 03:04 PM
Replies: 14
Views: 852
Posted By Bones232

Re: So....What's this mean to you?

Well, I'm convinced the bottleneck is most likely the intake. Although to verify things, I will remove my air cleaner for a run to see if that makes a difference. It is simple enough to do.
...
Forum: DIY PROM
05-12-2010, 09:08 PM
Replies: 14
Views: 852
Posted By Bones232

Re: So....What's this mean to you?

I just found it interesting as 4900-5000 is about where the engine stops pulling hard and i feel like i should be shifting. With my combo i kind of expected to pull through at least 5400-5500...
...
Forum: DIY PROM
05-11-2010, 08:47 PM
Replies: 14
Views: 852
Posted By Bones232

So....What's this mean to you?

The attached pic shows a wide open 2nd gear run. My Grams/sec hit a wall, so to speak, at about 4900 rpm. From then on grams/sec never goes above 207.

The only thing that sticks out is my Map...
Forum: Power Adders
10-21-2009, 08:51 PM
Replies: 3
Views: 798
Posted By Bones232

Re: In tank 3/8 hose

Do a search for SAE 30R10 submersible fuel hose. I ended up getting mine at Napa. I don't know if they ship overseas though.
Forum: Power Adders
10-15-2009, 07:58 PM
Replies: 134
Views: 35,623
Posted By Bones232

Re: Here comes another single turbo TPI 5.7 87 Iroc

zz3astro - what fuel and timing are you running? Did you have to go with 93 or better?
Forum: Wheels and Tires
08-23-2009, 10:49 PM
Replies: 1,132
Views: 458,495
Posted By Bones232

Re: Got Vette Wheels??...Post pics here...!

Its one of the reasons I bought it:thumbsup:

You can see it from about 2 miles away...you can't help but look at it...even if you don't like the color...
Forum: Wheels and Tires
08-23-2009, 08:22 PM
Replies: 1,132
Views: 458,495
Posted By Bones232

Re: Got Vette Wheels??...Post pics here...!

How about some chrome wagon wheels?
Forum: Body
04-25-2008, 09:47 PM
Replies: 2
Views: 1,676
Posted By Bones232

Re: What metal thickness for floor boards?

The bulk of my floor boards measured out to about 22ga.

I used a combination of 16 & 22ga for my repairs...
Forum: Tech / General Engine
04-13-2008, 03:41 PM
Replies: 3
Views: 1,832
Posted By Bones232

Re: Distributor Housing Shimming

When properly shimmed I'm seeing the distributor housing somewhere in the neighborhood of .040" above the intake manifold seat with out a gasket.

I have a stock replacement oil pump and whatever...
Forum: Body
04-12-2008, 10:53 PM
Replies: 11
Views: 2,891
Posted By Bones232

Re: Third Gen Rust repair in GMHTP

I've got a pretty good idea what they are talking about. I spent about 200hrs fixing rust spots in prep. for SFC's last winter/spring. I still have spots that need attention at some point.

The...
Forum: Tech / General Engine
04-12-2008, 06:39 PM
Replies: 3
Views: 1,832
Posted By Bones232

Distributor Housing Shimming

I noticed the other day that the distributor housing did not sit flat on the intake (even with the gasket in place). If I remove all the distributor gear shims the housing will sit flat with some...
Forum: DIY PROM
11-07-2007, 08:54 PM
Replies: 3
Views: 704
Posted By Bones232

Re: Need help with my IAT install

How is the signal and ground wired to the sensor? I believe the wire from EBL (C12 - tan) should be connected to the "B" terminal on the sensor and the ground connected to "A".

Also, what ground...
Showing results 1 to 50 of 169
 
Page 1 of 4
1
2
3
4


 
Forum Jump


All times are GMT -5. The time now is 08:34 AM.