Thread: What should my next mod(s) be?

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  1. #1 What should my next mod(s) be? 
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    04 COMP-G with a L26, instead L67/L32, and 2.93 geared tap-shift built trans.

    Current mods are:
    ZZP Z7 turbo kit (one of the originals converted to a v-band flange, new turbonetics turbo)
    LT1 MAF
    HV3
    1.9 modded stock rockers; 105lb springs
    42.5lb injectors
    No cat
    Auto lite 103s
    Fuel pump rewire
    Electric cutout
    Powrtuner (not really a mod since I don't know how to tune)

    I have a wideband gauge waiting to go in once it warms up along with a boost gauge and GXP front brakes. So now I'm back to speed.

    I'm THINKING injectors (what's everyone run?) my 42.5lbers are EV1 with EV1 to EV6 adapters, and IIRC I'm very close to maxing them out.

    I'm also thinking the front and rear log manifolds.

    I REALLY wanna hit 400whp. So of course a retune with the boost turned up after those mods would be necessary.

    Thoughts?
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  2. #2 Re: What should my next mod(s) be? 
    SE Level Member SlowFiero's Avatar
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    What turbo? Should be able to easily make 400 with what you have assuming you can supply enough fuel and have enough turbo. Upping boost may cause issues with your valve springs. Assuming your turbo is up to the task, injectors are probably needed to keep duty cycle under 80%, though I ran 42.5 green tops static for years with my m90 build around 375 rwhp. If it starts floating valves then springs.
    Billet 6262 T3 turbo, PT1001 intercooler, ST1 cam, 140 springs, pushrods, N* TB, L26 upper, HV3, otherwise stock L32. 10.007 @ 135.54with 1.46 60' 3130 lbs

    Old GenV M90, XP, heads, N* TB, ST2 intercooler - 11.425@115.60 1.54 60'
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  3. #3 Re: What should my next mod(s) be? 
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    Quote Originally Posted by SlowFiero View Post
    What turbo? Should be able to easily make 400 with what you have assuming you can supply enough fuel and have enough turbo. Upping boost may cause issues with your valve springs. Assuming your turbo is up to the task, injectors are probably needed to keep duty cycle under 80%, though I ran 42.5 green tops static for years with my m90 build around 375 rwhp. If it starts floating valves then springs.
    Honestly I don't know the specs on it, it was supposed to be comparable to the turbo that originally came on the Z7 turbo kits back when they first came out.

    I believe ZZP said my injectors were pretty much maxed when they dyno tuned it. Wanna say 100%+ duty cycle. Something about being an 04+ return less and having more headroom though so they weren't worried since I was just pushing 9psi.
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  4. #4 Re: What should my next mod(s) be? 
    SE Level Member SlowFiero's Avatar
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    Yeah, 04+ are not boost referenced, so injectors would pretty much be required. Missed that in your original post.
    Billet 6262 T3 turbo, PT1001 intercooler, ST1 cam, 140 springs, pushrods, N* TB, L26 upper, HV3, otherwise stock L32. 10.007 @ 135.54with 1.46 60' 3130 lbs

    Old GenV M90, XP, heads, N* TB, ST2 intercooler - 11.425@115.60 1.54 60'
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  5. #5 Re: What should my next mod(s) be? 
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    Say I go with 80lb injectors, what do I need to do on the powrtuner to use them, just until I go and have it dyno tuned on higher boost?
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  6. #6 Re: What should my next mod(s) be? 
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    just adjust the IFR table for the 80's
    - 2001 Grand Prix XGT -- 11.21@124MPH
    - 2010 Chevy 2500HD LTZ -- Car hauler
    - 2011 BMW 328i Xdrive -- Wife's Daily
    - 2014 Ford F250 crew cab -- 6.2 liters of ford fail
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