fuel cutoff or rev limiter problem - 05 rcsb 6.0 t56 -

[05rcsb]

Hey guys, posting up for answers or opinions. I'm very new to this. I've got a 2005 rcsb with a 6.0 lq9 tsp stage 4 truck cam, prc heads shaved .020, walbro 255 pump,8.1 injectors. Swapped in a t56 from a 02 ss camaro as well. I've changed everything in the tune to bump the rev limiter I can find. I'm still bouncing off it for some reason. You guys take a look? Also, this is a work in progress - I've got it idling great and taking throttle but I haven't done any ve tuning or maf tuning yet. I've got a aem 30-0300 wideband hooked up in the truck but I haven't started logging it in hptuners yet. I'm open to any suggestions, or tips. Thanks in advance.

[NPD]

What version of HP Tuners did you use to read the calibration? What do you want the RPM limit to be? What is it hitting now?

[05rcsb]

The latest version 4.0 I believe. Its hitting 5500 now and I'd like to raise it to 6500

[NPD]

Changes should be simple to make. I deal with rev limits all the time on the dyno. I cannot open your particular tune in 4.0, I get a message saying I am not part of a remote tuning network.

[05rcsb]

Sorry about that, somehow it got tuner locked. I've changed the first post and updated the file. Please try it again. Thanks in advance.

[NPD]

OK great. I will look at it first thing in the morning for you.

[05rcsb]

Hey, I've also got this posted on pt.net and another member there suggested the engine and trans abuse settings. I changed a couple things in the original tune and went for a test drive. Same problem, but I've reposted the updated tune. Thanks again

[NPD]

I see you are not using ETC so make sure to change the following anyway:

Engine>Torque Management>General>ETC Limits>ETC Injector Disable Set all to 255
Engine>Torque Management>General>ETC Limits>Power-Hop Inj Disable Set all to 255
Engine>Torque Management>General>Maximum Torque>vs. RPM Set all to 640
Engine>Torque Management>General>Traction Control System>TCS Method>TCS Max Time Set to 0
Engine>Torque Management>General>Traction Control System>TCS Method>TCS Min Time Set to 0
Engine>Torque Management>General>Traction Control System>TCS Method>TCS Retard Ramp Out Set to 0

Engine>Fuel>Cutoff, DFCO>RPM Limits>Cutoff>In-Gear Set all Cutoff to 6,500 and all Resume to 6,400 (If your ECM does not have a valid VSS or is missing a PRNDL input and/or TCM, ECM will default to a gear it picks on its own and could be stuck in Park/Neutral)
Engine>Fuel>Cutoff, DFCO>RPM Limits>Startup Modifiers>RPM Set all Cutoff to 6,500 and all Resume to 6,400
Engine>Fuel>Cutoff, DFCO>RPM Limits>Startup Modifiers>Delay Set all to 0
Engine>Fuel>Cutoff, DFCO>RPM Limits>Resume>Bad VSS Resume Set to 6,500 RPM
Engine>Fuel>Cutoff, DFCO>RPM Limits>Resume>Bad P/N Resume Set to 6,500 RPM

Transmission>Torque Management>Abuse Mode>Speed Set to 0

If still the same rev limit then change

Engine>Torque Management>General>Spark Retard>vs. Torque Reduction Set all to 0
Engine>Torque Management>General>Spark Retard>vs. Spark Retard Set all to 0

Let me know how this works for you.

[05rcsb]

Thank you. I will try this tonight after work and let you know.

[05rcsb]

Fixed it. Thank you so much for the help.

[NPD]

You're very welcome! Happy to help.

[Vcalderon777]

hello there old but what about it you have DBW?

[Just Chuck]

Basically the same.

Engine>Fuel>Cutoff, DFCO>RPM Limits>Cutoff>In-Gear Set all Cutoff to 6,500 and all Resume to 6,400 (If your ECM does not have a valid VSS or is missing a PRNDL input and/or TCM, ECM will default to a gear it picks on its own and could be stuck in Park/Neutral)
Engine>Fuel>Cutoff, DFCO>RPM Limits>Startup Modifiers>RPM Set all Cutoff to 6,500 and all Resume to 6,400
Engine>Fuel>Cutoff, DFCO>RPM Limits>Startup Modifiers>Delay Set all to 0
Engine>Fuel>Cutoff, DFCO>RPM Limits>Resume>Bad VSS Resume Set to 6,500 RPM
Engine>Fuel>Cutoff, DFCO>RPM Limits>Resume>Bad P/N Resume Set to 6,500 RPM

[[email protected]]

Hi guys , need your kind help I have chevy cruze 1.8 , when trans in P or Natural will not go beyond 3000 Rpm. How can in open the RPM limiter.
For your info my engine ecm has only one page which spark advance >> RPM VS MG/ STROKE .
My ecm is S76GM.
But my TCM >>VSS P./ REV- TRANS 36.0000

In advance I'm grateful, as I'm beginner tuner