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  1. #1
    RazorPoop's Avatar
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    SuperCharger Upgrade Kits: ET-127 / ET-137 / XX-2 Charger / ET 68-40 LE

    Good Day everyone!


    I will be ordering an OEM S.C. rebuild kit in a couple months.

    I haven't completely decided on which S.C. upgrade I will be going with.
    I have been leaning towards the XX-2 Charger (front housing/wheel/spacer)
    ..... but, I have been "eyeballing" the ET 68-140 LE, as well.

    (ET makes the parts, and the XX-2 is basically the ET-137, made for Riva)
    I will be modding into a STAGE 3-4 scenario, with upgraded valve train,
    1100cc injectors, fuel rail, RRFPR, flywheel bolts, etc., (yada... yada... yada...)

    So, here are my questions
    :

    1 - Will the ET 68-140 LE, play nice with my flywheel? (I don't feel like shredding teeth)
    2 - How much performance gain can be expected by the "LE", over the XX-2?
    3 - I am running a F1000, with a Tial BOV. Will this be enough to tame the "LE"?
    4 - What are your personal experiences with the S.C. upgrades listed?

    • ET-127 / ET-137 / XX-2 Charger / ET 68-140 LE

    5 - What are your personal preferences, and why?


    So, to keep this thread on topic ..... the following will be considered -mute- points:


    $$$ Price / Type of Ski / Why upgrade, go with a "300"/ (yada... yada... yada...)
    Fact is ..... I'm doing it! That, is that!

    I love to squeeze the juice out of oranges, if you catch my drift.
    That's also why I love my "Boss 429", rather than a "Hellcat"!

    Thanx for your feedback folks!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Stage #2.2.4 - ET 127 x3mm (xxxxx psi) Wheel - $xxx.00 - (www.torxracing.com).jpg 
Views:	46 
Size:	21.8 KB 
ID:	444300   Click image for larger version. 

Name:	Stage #2.2.1 - Riva - XX-2 SuperCharger (13.5 - 15.0 psi) - $650.00 - (www.pwcmuscle.com).jpg 
Views:	44 
Size:	35.2 KB 
ID:	444301   Click image for larger version. 

Name:	Stage #2.2 - ET Xtreme SuperCharger LE 68-140 (16.0 - 18.0 psi) Kit - $980.00  - (www.pwcmuscle..jpg 
Views:	44 
Size:	76.1 KB 
ID:	444302   Click image for larger version. 

Name:	Stage #2.2.3 - ET 137 x4mm (13.0 - 15.0 psi) Wheel - $649.00 - (www.torxracing.com).jpg 
Views:	44 
Size:	106.5 KB 
ID:	444303  
    Last edited by RazorPoop; 02-05-2019 at 01:35 PM.


  2. #2
    Ease of work. Get the et 215 great bang for your buck. But going stage 3-4 your well past what that charger can do

  3. #3
    connorrxp's Avatar
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    The 137 +4 is the best charger for the reliability vs power decision, spun to 9k with the upgraded valvetrain and a good tune and you will beat anyone on the lake. None of them should shred the flywheel teeth however flywheel bolts are a concern. I wouldnt run the 68 140 more than 50 hrs between rebuilds, but the 137 I'd feel comfortable pushing 75-100hrs. If you're not going larger than 137 +4 some 60# injectors set up with rising rate is a perfect size injector for that wheel. No matter which one you get spring for a fizzle so you can use the power all day. I forget what year the gtr got a rear housing machined for a 137 wheel and they put the 127 (215 hp) wheel in it. Crack it open and see you might not need to get a new x charger. The 127 wheel is basically a little over the x wheel stock and you'll get slapped by an rxp with a tune. So I highly recommend the 137 +4 /xx2

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  5. #4
    knowing what ski you have helps with answering your question, i have a gtx 215 which i installed a 137 +4 wheel with a 260 front charger cover with all supported mods, run low 80s all day, thats bigger charger is gonna be a waste of money and time with the upkeep and you will always be chasing the afr numbers for the perfect tune, my 2 cents

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  7. #5

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    Quote Originally Posted by connorrxp View Post
    The 127 wheel is basically a little over the x wheel stock and you'll get slapped by an rxp with a tune. So I highly recommend the 137 +4 /xx2
    so let me make sure I understand you correctly , is the 127 wheel is slightly better than a ( OEM x charger wheel , like off a 260 ) , and this can that wheel be used in a X- charger as a slight upgrade to the OEM wheel?

  8. #6
    RazorPoop's Avatar
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    Thanx Conner! That sounds like some good info! Yes, going with a RRFPR, the F1000, and a Tial BOV. Curious, did you ever position the F1000, up and away from the S.C. and exhaust, or did you use the mount they provided? I am using the Worx silicone exhaust to reduce as much heat soak as possible, but was also wondering about the I.C. placement. Also, how many (cc's) are the 60#'s? Edit: Check out my response below - looks like the OEM base plates are the same for the 215/255/260hp, but the front cover is a different part. That must be the reason why the XX-2 comes with a 137 housing .... to cover the bases for multiple types, of upgrades.
    Last edited by RazorPoop; 02-05-2019 at 01:32 PM.

  9. #7
    RazorPoop's Avatar
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    Appreciate that! Have never heard, or known many that went with the LE 68-140. Heard it spanks your ski a bit! Yeah, think I will go will the 137+4. You see any significant difference between the ET-137 and the XX-2, made for Riva? I would have expected them to be identically priced, but Riva's Front Cover/Wheel/Spacer comes in at $650 for the kit vs. $650 for the "Golden" 137+4. Then again, based on "Conner's" comments above, I will yank the S.C. to confirm what version of base plate I have. I have the mechanics service catalog, which identifies the OEM compressor base plate as part#420867180 for the GTR215 (2013). The RXP-X 260, RXT-X, and GTX, for the same year (2013), all reference the same part#420867180, the front OEM housings are part#420867157 ..... except for the GTR215, which is part#420867154. So, based on what I am seeing, it looks like my front housing either (a) needs to be machined, or (b) the XX-2 already comes with the 137 cover, the wheel, and the spacer. Thoughts???

  10. #8
    Davrac's Avatar
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    From 2012-2013 Seadoo uses the same rear housing for their chargers. It is only the front cover that needs changing for the 137mm wheel.

    As as you can see I have both variants of chargers and can verify the performance of both. Results can be surprising

  11. #9
    RazorPoop's Avatar
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    Thanx Dave!!!

    Yes ...... that seemed to be the confusing part, until I compared all models in that same year range. Looks like BRP was trying to save some cash???
    Soooo, what "IS" you definition of "Results can be Surprising"? (LOL) ...
    You got 3" hard pipes on your 2015 for exhaust, or I.C?
    I guess if the exhaust went straight out the left rear, that would alleviate some heat around the right rear 4" intake?
    I see you did the piston, cam and rods upgrade. Gonna try that Turbo next???

  12. #10
    Davrac's Avatar
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    The speeds attainable with a 127 wheel are truly amazing for such a small wheel if the setups are dialled in.

    Problem is people don’t believe unless they see with their own eyes. That’s why the little Aussie guy is getting out and about overseas

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