Custom OSes?????

[FRCTony]

Can anyone point me to descriptions of the various custom OSes?

I would like to know what they add, and how they differ.

Thanks!

[Bill@HPTuners]

1 Bar MAF custom OS available on most 99+ LS1 based PCM's

• Adds RTT http://www.hptuners.com/help/vcm_editor_rtt.htm to the stock calibration.

1 Bar SD custom OS available on most 99+ LS1 based PCM's

• Adds a VE Multiplyer vs. TPS vs. RPM table
• secondary VE table not used (if applicable)
• Dual (High and Low Octane) Spark table support
• RTT http://www.hptuners.com/help/vcm_editor_rtt.htm (most calibrations)

2 Bar SD custom OS available on most 99+ LS1 based PCM's

• 2 bar MAP sensor support (calibration capability for GM 0-5V linear MAP sensors)
• Extended Main VE table to 210kPa (2bar)
• Retains full 5 kPa resolution in non-boost regions (most calibrations)
• 5 kPa resolution in boost regions (most calibrations)
• secondary VE table not used (if applicable)
• New MAP referenced "Boost Enrich" table
• New openloop MAP threshold
• Dual (High and Low Octane) Spark table support
• Speed Density mode only
• VCM Scanner histogram automatically recognizes and adjusts for 2bar feature (if applicable)
• New 2bar MAP PID for VCM Scanner (if applicable)
• RTT http://www.hptuners.com/help/vcm_editor_rtt.htm (most calibrations)

3 bar SD custom OS available on most 99+ LS1 based PCM's

• 3bar MAP sensor support (calibration capability for GM 0-5V linear MAP sensors)
• Extended Main VE table to 315kPa (2bar)
• Retains full 5 kPa resolution in non-boost regions (most calibrations)
• 5 kPa resolution in boost regions (most calibrations)
• secondary VE table not used (if applicable)
• New MAP referenced "Boost Enrich" table
• New openloop MAP threshold
• Dual (High and Low Octane) Spark table support
• Speed Density mode only
• VCM Scanner histogram automatically recognizes and adjusts for 2bar feature (if applicable)
• New 3bar MAP PID for VCM Scanner (if applicable)
• RTT http://www.hptuners.com/help/vcm_editor_rtt.htm (most calibrations)

2.5 Bar MAP - Speed Density (LS2 V8 - E40 ECM) This enhancement contains the following features:

• 2 bar or 3 bar MAP sensor support (calibration capability for GM 0-5V linear MAP sensors)
• New Boost VE table from 105 kPa to 255 kPa (2.5 bar or 22.5 psi boost)
• Retains stock VE table resolution in non-boost regions
• better than 5 kPa resolution in boost regions (105 kPa - 255 kPa)
• New MAP referenced "Boost Enrich" table in 5 kPa increments
• New Boost Enrich MAP threshold
• Speed Density mode only
• Rescaled fan temperature axis 163-250F (73-121C), stock is 192-250F (89-121C)
• VCM Scanner histogram for Boost VE table included in histogram library

[FRCTony]

Thanks!

Some questions:

1. Can I pass OBDII I/M Readiness tests with the 2bar OS?

2. Can you tell me what the "MAP referenced boost enrich table" is for, and how it works?

3. Is the 1bar MAF enhanced a free upgrade?

[Bill@HPTuners]

Thanks!

Some questions:

1. Can I pass OBDII I/M Readiness tests with the 2bar OS?

2. Can you tell me what the "MAP referenced boost enrich table" is for, and how it works?

3. Is the 1bar MAF enhanced a free upgrade?

1. not sure...i know its possible to pass with the 1 bar SD & 1 bar MAF just fine so I assume you could pass if your DTC's are setup correctly.

2. its a boost enrichment table thats map referenced lol honestly your computer using many points of reference including rpm, map, etc. In a boosted application rpm & map wont always match so they added an extra table for more resolution so you can more accurately tuning fueling.

3. its not free per say...basically your initial purchase comes with 8 credits the 1 bar MAF enhanced costs 1 credit to apply...you apply it only once & then can tune that vehicle an unlimited amount of times. As an example you could
License 1 LS1 pcm for 2 credits
License that LS1 pcm with the MAF enhancement for 1 credit more
and you'd have 5 credits left over to use at your leisure which could be used to license several more vehicles.

[slow6]

thats alot of v8 features

[FRCTony]

3. its not free per say...basically your initial purchase comes with 8 credits the 1 bar MAF enhanced costs 1 credit to apply...you apply it only once & then can tune that vehicle an unlimited amount of times. As an example you could
License 1 LS1 pcm for 2 credits
License that LS1 pcm with the MAF enhancement for 1 credit more
and you'd have 5 credits left over to use at your leisure which could be used to license several more vehicles.

I thought if I licensed the 2bar OS, that the RTT (read 1bar MAF enhanced OS) was free?

Was I mistaken? If so how many credits will it take to license both for a single vehicle?

[Bill@HPTuners]

I thought if I licensed the 2bar OS, that the RTT (read 1bar MAF enhanced OS) was free?

Was I mistaken? If so how many credits will it take to license both for a single vehicle?

2 bar & RTT are one in the same & costs 2 credits

2 bar & 1 bar are not the same

when you license a 2 bar custom OS, RTT is included(available on most calibrations) for free

[4.8t]

what if you have maf enhanced and want to go to 2bar? do i have to do two credits again?

[Texsrt4]

really? the 2bar os comes with RTT???

[Bill@HPTuners]

what if you have maf enhanced and want to go to 2bar? do i have to do two credits again?

As long as you've updated to 2.22 no.

[Bill@HPTuners]

really? the 2bar os comes with RTT???

Most GM Gen 3 2 bar os's come with RTT.

[4.8t]

As long as you've updated to 2.22 no.

so i just turn a stock tune to 2bar like i did the maf. then when i go to do the full rewrite it will prompt me correct? will it be one credit? just asking so i'll know i'm doing it right when i do it.

[Bill@HPTuners]

If your running 2.22 we don't separate the VCM enhancements so if you had previously upgraded to a 1 bar operating system you now have all VCM Enhancements added, FREE. So you can switch back & forth at any time to any OS.

[4.8t]

sweet, thanks. but i did the maf enhancement not 1bar. but i did do 1 bar on my silverado. sorry if i'm being complex or a pain in the ass

[Bill@HPTuners]

if you licensed ANY of our vcm enhancements 1 bar maf, 1 bar sd, 2 bar sd, 3 bar sd ANY of them pre 2.22 you now have ALL vcm enhancements for that vcm id number.

[4.8t]

sweet a direct answer lol.
THANK you. i do appreciate it.

[Texsrt4]

Most GM Gen 3 2 bar os's come with RTT.

cool