LMS vs Gearhead "Canned Tunes" Comparison

Discussion in 'Generation 4 - Performance Upgrades' started by OmaHahn, Dec 5, 2018.

  1. OmaHahn

    OmaHahn SHO Member

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    You need the high flow fuel pump though for e30?
     
  2. StealBlueSho

    StealBlueSho SHO Member

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    I would ask your tuner.. I say yes... but I want a safe stable tune that doesn’t matter what time of year in its...

    I know others will run E30 on stock pumps...

    Up to your tuner..


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  3. OmaHahn

    OmaHahn SHO Member

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    Thanks!! Time to get a hold of GH and inquire about the next step up!
     
  4. mattr66

    mattr66 Active Member

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    You have to pull max allowed boost back if you want to run E30 as compared to normal E10 with the stock pump.

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  5. kcobra

    kcobra SHO Member

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    I wonder if they have ever tuned an SHO to run VP MS109E? Supposed to be able to crank more timing in with that gas vs regular MS 109.
     
  6. limited02

    limited02 SHO Member

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    OP - When do you expect to hit the dyno with the GH tune?
     
  7. SM105K

    SM105K SHO Member

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    That is unfortunate. I would just get the UPR CC. It is great.

    E30 is taking Pump E85 and the highest octane available in your area (91 or 93) and mixing it to a E"30" ratio. The difference between a good 93 octane tune vs a E30 tune are night and day. More power and very little knock if not any.
     
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  8. SM105K

    SM105K SHO Member

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    That is great information. Looks like I will put a HPFP on the car next fall. Thank you for reporting this.
     
  9. OmaHahn

    OmaHahn SHO Member

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    Already did and the results are earlier in this thread - but I know there's a ton of info to read to find it. So:
    the GH tune made 347WHP and 398WTQ.
     
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  10. OmaHahn

    OmaHahn SHO Member

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    I had no idea how much a difference this is till I heard some more people report the same thing! My next mod! Dang you guys forcing me to spend more money!!! ;)
     
  11. SM105K

    SM105K SHO Member

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    My car makes the numbers it makes because of the E30. I should have my car back up and running soon. Since it is colder, I will be heading back to the dyno and track soon.
     
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  12. Shhoebow

    Shhoebow New Member

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    I have the exact same issue as discussed on this thread, I have done everything Livernois told me to do including topping off trans fluid and putting new plugs in 0.28 gap I even changed the plugs to NGK 542s a colder plug what started off as the transmission slamming into neutral at WOT to sputtering at WOT in all gears.
    Oh baby my SHO most of the time. The problem only got worse and started throwing po300 code
    Just recently I was told it was the fuel pump and I was one of two people that have that problem.

    I just finally received my revised tune and I'm uploading it now. I don't like to knock tuners because I know they work hard. Maybe a little too hard I'm tuning now going to drive it 200 miles and then test again if that fails then I don't know what to say.
    FYI stock tune runs perfect.
    [​IMG]

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  13. StealBlueSho

    StealBlueSho SHO Member

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    P0300 is a misfire code that is not related to one cylinder....

    That is a bit different than just a fuel pump issue.

    I would check plugs, coil packs, etc...

    How many miles on your SHO?


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  14. Shhoebow

    Shhoebow New Member

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    72,000ish plugs changed less 1000 miles ago to a colder plug.it changed nothing

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  15. StealBlueSho

    StealBlueSho SHO Member

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    Could be the coil on plug packs...


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  16. Shhoebow

    Shhoebow New Member

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    We will see,I will update this thread if it works I will be happy,FYI I flashed it to stock and disconnected the battery and tested battery just incase.then now the new tune the revised.thwy said it's a new tune only a few have it.

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  17. limited02

    limited02 SHO Member

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    I see they are fairly close with GH taking the win. Do you have a graph? If you can, update the first post!
     
  18. StealBlueSho

    StealBlueSho SHO Member

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    Peak for peak GH has a bit more and would be considered “close”...

    However, if you look at the graph, the Gearhead curve is higher almost all the way through the power band..


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  19. limited02

    limited02 SHO Member

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    I just now went back to find it and I see what you're saying (page 5, post #87). I was going off the #'s in the post I quoted. Now the only question I'd be curious to know is, what was the boost #'s between the two. Either way, GH is the winner here.
     
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  20. StealBlueSho

    StealBlueSho SHO Member

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    Hmm, I can get that info for you later as I have datalogs of both...

    Unless Matt wants to chime in...


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