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9 Minutes Ago

msassman started a thread SUrge issue at idle in GM V8 Tuning - Engine, Gas (Gen 3)

Logs attached show surge, this does not happen all the time and I had just tuned it on a prior log and idle was fine, once i give it gas it underruns...

0 replies | 7 view(s)

48 Minutes Ago

RDF1 replied to a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

Here is LMG injector data.

8 replies | 75 view(s)

53 Minutes Ago

DanN replied to a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

Fresh copies of the tune and log.

8 replies | 75 view(s)

58 Minutes Ago

RDF1 replied to a thread OBS 5.3 Tune help....very low speed idle surge in GM V8 Tuning - Engine, Gas (Gen 3)

Also its running in SD Mode and VE table numbers are crazy high so id check fuel pressure before going any further.

2 replies | 34 view(s)

1 Hour Ago

DanN replied to a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

They are 12594512, which are listed as 38# for a 5.3 w/ flex fuel. Will do.

8 replies | 75 view(s)

1 Hour Ago

RDF1 replied to a thread OBS 5.3 Tune help....very low speed idle surge in GM V8 Tuning - Engine, Gas (Gen 3)

Look at ECM2130 and ECM 2131. The reason the timing is staying static is because Throttle Cracker is in play. As soon as you hit 2mph (ECM...

2 replies | 34 view(s)

1 Hour Ago

RDF1 replied to a thread Help adjusting lean condition - 5.3L M122 in GM V8 Tuning - Engine, Gas (Gen 3)

It appears you have a vacuum leak or the throttle body is open to far or the blower bypass isnt adjusted corretly. I see your still using the...

1 replies | 31 view(s)

1 Hour Ago

LS ROB replied to a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

Add cylinder airmass to your channels.

8 replies | 75 view(s)

1 Hour Ago

RDF1 replied to a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

Whats your injector part number?

8 replies | 75 view(s)

1 Hour Ago

gtstorey replied to a thread Gen IV LS Swap E38 ECM P2122 and P2138 DTC - limp mode in GM V8 Tuning - Engine, Gas (Gen 4)

Some of the GM pedal throttle voltages go in the same direction some go in different directions. Depends on which ECM you are using. This is why it’s...

14 replies | 258 view(s)

2 Hours Ago

DanN replied to a thread Gen IV LS Swap E38 ECM P2122 and P2138 DTC - limp mode in GM V8 Tuning - Engine, Gas (Gen 4)

I had P2138 on my setup when I first put it together, too. But it was my own wiring, not PSI. Add channels for pedal position D & E in your log,...

14 replies | 258 view(s)

2 Hours Ago

Dbarber started a thread New Guy Just getting started in VCM Scanner

Hey Gang! Rookie here with an 87 Gt 5spd 3800sc. long story short, no DTCs in January. 1st time out in the heat and she's lazy. Died a few times (...

0 replies | 18 view(s)

2 Hours Ago

KillboyPowerhead replied to a thread Canyon Colorado v6 3.6 2018 not entering Power Enrichment PE until 80 TPS in GM V6 Tuning - Engine

Looks like PE is enabling as per the tune. Every time I see PE come on is when the pedal position is above 39% (as per the Throttle > Enable Pedal...

1 replies | 92 view(s)

2 Hours Ago

DanN replied to a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

Updated tune with corrected injector data, and a quick around the block log. It is definitely better. I'm reluctant to fiddle with the VVE table...

8 replies | 75 view(s)

3 Hours Ago

63chevytuner started a thread Help adjusting lean condition - 5.3L M122 in GM V8 Tuning - Engine, Gas (Gen 3)

Hey guys, Looking for a little help on where to look for some basic startup info for a modified 5.3L LS. Here is the engine configuration: 2001...

1 replies | 31 view(s)

3 Hours Ago

DanN replied to a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

Just checked my Injector data - it got changed somewhere along the line. Updating... Haven't tried VVE tuning. Call me chicken. Ha.

8 replies | 75 view(s)

3 Hours Ago

LS ROB replied to a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

I'd get the part number off of the injectors and make sure you have the correct data in the tune for the injectors you have. Have you done any VVE...

8 replies | 75 view(s)

3 Hours Ago

Tonyorlo replied to a thread TBSS 4l80e swap help in GM V8 Tuning - Engine, Gas (Gen 3)

Got the harness, ecm and tcm from pmcofnc. The truck starts up and will drive, but shifting isn?t right. I have 2 obvious issues that aren?t helping...

33 replies | 1985 view(s)

3 Hours Ago

ebg8gt replied to a thread 6l90 TCC apply ramp strategy. ECCC in GM V8 Tuning - Transmission

Digging up an old thread here, but I'm having the same jerking/surging issue on my 2016 Silverado 2500, and trying to make some adjustments. For a...

7 replies | 13088 view(s)

4 Hours Ago

DanN replied to a thread LS Manual Swap Challenges in GM V8 Tuning - Engine, Gas (Gen 4)

Just a quick "In other news" update, here. I'm struggling with the tune, but have made other decent progress. I have the speedo working again...

5 replies | 195 view(s)

4 Hours Ago

danieltexpd started a thread OBS 5.3 Tune help....very low speed idle surge in GM V8 Tuning - Engine, Gas (Gen 3)

Afternoon, folks.... I just bought a 1995 OBS truck with an DBC 5.3, 243 heads, Truck Norris cam, TBSS intake, 102mm TB, 4L60E I'm not new to the...

2 replies | 34 view(s)

4 Hours Ago

2xLS1 replied to a thread 1998 Corvette in GM V8 Tuning - Engine, Gas (Gen 3)

There can be different calibrations for a particular year and model vehicle and all of them be stock for a particular VIN. In your instance not every...

1 replies | 30 view(s)

4 Hours Ago

DanN started a thread 4.8 Hot Start and Fuel Trims / VVE in GM V8 Tuning - Engine, Gas (Gen 4)

Losing my marbles a tiny bit. I've been chasing my tail for quite a while now, and I think I must be missing something basic. I have a 4.8 with...

8 replies | 75 view(s)

4 Hours Ago

gtstorey replied to a thread Tune in Lounge

Assuming this is a GM, users Alvin or edcmat-l1 are both professional tuners that remote tune and that help out in the GM v8 gen3 & gen4 sections.

2 replies | 34 view(s)

4 Hours Ago

RDF1 replied to a thread Tune in Lounge

Contact one these guys.. https://forum.hptuners.com/member.php?5378-Alvin https://forum.hptuners.com/member.php?4408-edcmat-l1

2 replies | 34 view(s)

5 Hours Ago

gtstorey replied to a thread Looking for a stock 1998 corvette tune file in GM V8 Tuning - Engine, Gas (Gen 3)

Looks like the attachment is still active.

5 replies | 1287 view(s)

5 Hours Ago

95ttoplt1 replied to a thread MPVI3 and 30-0334 connections in VCM Scanner External Sensors

On the pre Can cars (2000 Trans-am), would the AEM pass through still work with the MPVI3? or should I just get the NTK or AEM 0300 and wire through...

25 replies | 8544 view(s)

5 Hours Ago

Jason41650 started a thread Tune in Lounge

I?m looking for someone that knows how to tune. Recently rebuilt my 5.3 and did afm delete on it. And since I was already in that far it only made...

2 replies | 34 view(s)

5 Hours Ago

Jaster187 started a thread 1998 Corvette in GM V8 Tuning - Engine, Gas (Gen 3)

Does anybody have a known good stock 1998 corvette stock file? I looked in the repository and there are a couple there but there are differences in...

0 replies | 20 view(s)