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Thread: Is RTT Available for 1998 GTP???

  1. #1
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    Is RTT Available for 1998 GTP???

    Hey,

    I have a 1998 GTP with a DHP 1.0 (thank god the PCM was not locked). I have HPT Pro and I have been playing with settings but I noticed I cannot enable RTT. Is this available for me?

    Thanks!

  2. #2
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    Bill@HPTuners's Avatar
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    No it is not.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  3. #3
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    Awww shucks! Any way for us to get it or is it a PCM limitation?

  4. #4
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    Bill@HPTuners's Avatar
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    Its not in the pcm from the factory.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  5. #5
    Tuning Addict 5FDP's Avatar
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    Lucky for us 3800 guys, tuning is somewhat easy and it only takes 30-35 seconds to flash a new write in.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  6. #6
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    Yes 5FDP, I did notice that. I made a few subtle changes to my DHP 1.0. I also noticed (if I read it correctly) that the commanded A/F is 11.9 in this thing. I will need to hook up my wideband to confirm. Hey Bill, sorry to bug you but you said "from the factory". I guess that means you all can't add in in?

  7. #7
    Tuning Addict 5FDP's Avatar
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    Not sure about DHP, but I guess it could be 11.9 then uses the add vs rpm table to add more fuel as time goes on.

    A stock file starts out at 12.4 then uses that table to automactically minus 1ish afr for PE and slowly drop the afr as rpms rise and time goes on.

    Lots of people just zero that table and command a air fuel ratio of 11.4.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  8. #8
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    Quote Originally Posted by 5FDP View Post
    Not sure about DHP, but I guess it could be 11.9 then uses the add vs rpm table to add more fuel as time goes on.

    A stock file starts out at 12.4 then uses that table to automactically minus 1ish afr for PE and slowly drop the afr as rpms rise and time goes on.

    Lots of people just zero that table and command a air fuel ratio of 11.4.
    Ahhh... I see! Ok. Didnt quite understand how that worked. OK. I will play with those settings when I get my WB hooked up.

    Thanks!