Thread: S1x vs. XP

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  1. #1 S1x vs. XP 
    club of used to own a gp 99prixgt's Avatar
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    I was originally going to do yella terra 1.9's but, I figured Id skip the baby bottle and go to something a bit more aggressive. Im trying to figure out what compliments my new setup best. I love the way the xp sounds at idle, sounds loopier than an s1x. Ive heard the s1x is better for street use and more tame. I want to feel the power of the cam when i get into power band, and I want a nasty idle . Opinions? Since im going to need 105# valve springs, are the severe duty valves worth the $$?

    The car is my dd and use it frequently. I am really trying for 12's...

    new setup:
    -gen v top swap
    -n* t/b
    -all breathing mods to support, and adding an S2 i/c when it comes summer time.
    16' wrx sti- stock
    06 Spice Red GTO- m6/exhaust/tune/suspension/377whp-383tq-sold
    99 silvermist gp gt-g5/xp/IC/3.0mps-parted&sold
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  2. #2 Re: S1x vs. XP 
    Donating Users blowfishRus6's Avatar
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    cant speak from expernce but what ive gathered, the xp is more of a top end cam, 4500-6400rpm. ive heard the s1x is a more streetable cam also, mid range. with the intercooler, im sure whatever cam you choise, with the right tunning you will be able to go 12's
    white 04 comg G gtp. wizair, pacesetters, slp 1.8 rr
    its slow.
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  3. #3 Re: S1x vs. XP 
    DUI BABY Bio248's Avatar
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    both can make good power, but it depends where you want it. if i were to choose out of the two i would pick an s1x. it has a more usable powerband and i think it lopes better. intense makes good cams.
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  4. #4 Re: S1x vs. XP 
    youtu.be/xhrBDcQq2DM FoSHO99's Avatar
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    You can hit low 12's with the S1X and no IC, with an IC you could hit 11's. That is with the proper tuning and a built tranny, race gas, slicks.
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  5. #5 Re: S1x vs. XP 
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    my buddy ran high 12's with a 2.XX 60ft with the S1x, Gen V, N*, Lq4 and 3.29's in a Bonneville

    My vote is the S1x
    2003 SSEi,
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  6. #6 Re: S1x vs. XP 
    youtu.be/xhrBDcQq2DM FoSHO99's Avatar
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    Here is a vid of 2 local cars:
    YouTube - 98gtp 12.98

    The silver/two color car has the S1X cam, GenV, N* tb. it has run a best of 12.3
    The black car has an XP cam, S2 IC, Ported Gen3, N* tb. it has run a best of 12.6 or 12.8 i think

    You can kinda see where the cams hit their powerbands in the video since they run about the same mph and ET's.
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  7. #7 Re: S1x vs. XP 
    club of used to own a gp 99prixgt's Avatar
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    ^both of those cars scream. It seems that the S1x is probably the way to go, I did change my mind, ive decided to get the s2 intercooler first, and cam it over the summer. Thanks everyone for there input.
    16' wrx sti- stock
    06 Spice Red GTO- m6/exhaust/tune/suspension/377whp-383tq-sold
    99 silvermist gp gt-g5/xp/IC/3.0mps-parted&sold
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  8. #8 Re: S1x vs. XP 
    TDCRacing
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    S1X all the way.....
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  9. #9 Re: S1x vs. XP 
    SE Level Member 2kblackgtp's Avatar
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    i say xp, but thats because i'll be selling mine soon and your local enough that i wont have to ship =)
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