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  1. #1
    masta2000's Avatar
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    looking to upgrade from riva s3 charger

    if you read my sig you will see that i have full riva stage 3 except for the #50 injectors and the riva ecu ( also valve springs)

    i do not plan to get the ecu because i don't want the risk involved in spinning faster than 8200.

    i plan on getting a bigger charger that can boost around 13 to 14 psi at 8150rpm. which charger could correspond to that? in the store they claim 10.5 psi for the s3 charger at 8400 rpm. but i am gettting 11 psi at 8150 everyday. given the mods in my sig, could this be accurate? i am measuring with pro comp 2 gauge.
    i was thinking the cheapest charger would be x-charger with minirude upgrade, what psi could i expect with that one? or would it be better to get 2rude?
    could i run these chargers by only adding a rrfpr and pump?considering that i have 42#?

    and keep in mind that i am spinning at 8150

    thanks in advance for replies


  2. #2
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    I sell quite a few different gauges here in AU and have found there to be a fair bit of inaccurate gauges to be floating around...

    The autometer gauge we tested was out by 2 psi... It was a mechanical gauge as compared to a few other electronic gauges we also tested on the same car/same day/same dyno....

    Just some more info for you that might help...

  3. #3
    masta2000's Avatar
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    can anyone tell me what the s3 charger is supposed to put out in psi?

  4. #4
    mxl16's Avatar
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    I have an ET 137 X wheel upgrade for sale. It's a drop in wheel and spacer for the X charger. I had around 14 lbs of boost on any given day (@ 8500). I'm selling just the wheel and the spacer. If you interested, pm me and we can talk more.

  5. #5
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by masta2000 View Post
    can anyone tell me what the s3 charger is supposed to put out in psi?
    Most likely around 9 psi @ 8100

  6. #6
    masta2000's Avatar
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    how much does rude 1?

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    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    12ish @ 8100

  8. #8
    masta2000's Avatar
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    is this more powerful than the x-charger? i am looking to hit 80, is this possible with the rude 1? what kind of performance can i expect with this compared to the s3

  9. #9
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    It's a little stronger than the X charger. At 8100 rpm... your going to need a bigger charger to hit 80!

  10. #10
    Having Fun jp1300r's Avatar
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    Quote Originally Posted by masta2000 View Post
    is this more powerful than the x-charger? i am looking to hit 80, is this possible with the rude 1? what kind of performance can i expect with this compared to the s3
    It will be alot easier getting to 80 on stock ecu with a 2RUDE. I've done it on a PX. Thinking you will need 50's, RRFPR, Walbro fuel pump, repitch 4-blade Solas. I have seen it done with a ET137X drop-in also, so a Mini-Rude would work too.

    Sorry adding something. The ET137 ski has a modded rideplate to get it over 80. Mine was unmodded on my PX at the time. Best on the 2RUDE was 80.5 with stock ecu for me. Another option is a ET-EX, its just a hair better than a 2RUDE. You will get more help around here with a 2RUDE set up.

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