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2009-2014 Cadillac CTS-V Performance Mods Discussion, Pulley combo.. in Cadillac CTS-V Series Forum - 2009-2014; with the 2.55 and 9.1 you'll be at max (17-ish) psi for the stock blower. for a dd (daily driver) ...
  1. #16
    Stillborn's Avatar
    Stillborn is offline Cadillac Owners Enthusiast
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    Re: Pulley combo..

    with the 2.55 and 9.1 you'll be at max (17-ish) psi for the stock blower. for a dd (daily driver) "I" wouldn't go max unless you're doing some porting to the blower and tb. if you do the metco 2.4 (smaller than the 2.55) upper only, you'll get @ 5psi (14.5psi) and be out of the red zone and make dd much more reliable. the best thing about the 3 psi difference is all the supporting mod(cam/lower pulley install cost) cost will be drastically reduced. there are many who run 17psi and are happy,... something to consider. in any event good luck and keep us posted on the upgrades.


    I'd go metco on everything, including the solid isolator and 100mm idler pulley.
    http://www.metcomotorsports.com/prod...rchargerPulley
    Luna. and SerbsCTSV like this.

  2. #17
    Jake CTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    So I changed my mind and went with the 2.4 upper only and injectors. I get the car back tomorrow so ill post my new numbers after that and will be at the track on Saturday. Keeping my fingers crossed I can break into the 10's on a street tire.

  3. #18
    SerbsCTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    Quote Originally Posted by Jake CTSV View Post
    So I changed my mind and went with the 2.4 upper only and injectors. I get the car back tomorrow so ill post my new numbers after that and will be at the track on Saturday. Keeping my fingers crossed I can break into the 10's on a street tire.
    So what kinda numbers you putting down.
    Kools likes this.

  4. #19
    Jake CTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    Just got it back on Friday. Not too happy with the numbers. 545rwhp and 530tq. I think it should have been a little better. Anyone else?

  5. #20
    Gary Wells is offline Cadillac Owners Connoisseur
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    Re: Pulley combo..

    RWHP & RWTQ dyno #'s depend primarily upon dyno brand (Dynojet versus Dynapak), type, & correction factoring used.
    A6 or M6?

  6. #21
    Jake CTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    It's an A6 and I wanna say its a dynojet but don't quote me on that.

  7. #22
    Gary Wells is offline Cadillac Owners Connoisseur
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    Re: Pulley combo..

    Jake:
    Was a baseline stock dyno run performed?
    Just a suggestion should you go through this again but it is best to have a baseline run performed before mods, then 1 after the mods are installed, & preferably on the same dyno.
    And 5 lbs. PSI boost sounds very low to me. I would think that you would lose about 1.5-2.0 lbs PSI boost for the headers.
    Your dyno shop should be able to tell you what brand & type of dyno they are using.
    If it were me, I would not proceed with further mods until I found out where I was at, why I am there, & is that where I should be at performance wise (RWHP & RWTQ gain).

  8. #23
    thebigjimsho's Avatar
    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    NEVER go for a dyno run without a baseline.
    Luna. likes this.

  9. #24
    Jake CTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    Yeah the baseline dyno run was 503rwhp and 470 for tq. My last dyno sheet had my boost psi on it but this one doesn't. When i bring it back to have the meth kit installed ll ask them a few more questions.

  10. #25
    Gary Wells is offline Cadillac Owners Connoisseur
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    Re: Pulley combo..

    503 is pretty high for a baseline for a stock '09 A6 if that was on a Dynojet.
    Here's something that you might want to consider comparing baseline RWHP &
    RWTQ #'s with.


    Various RWHP, RWTQ, Different Dyno Comparisons - Bone Stock CTS-V2's

    Cad bone stock ’09 & up RWHP & RWTQ averages (as of 06-29-2011)

    1) Cad bone stock RWHP & RWTQ (A6 (34) + M6 (17)) (all dynos): 06-29-11
    RWHP average (51 samples): 23911/51= 468.84 average
    RWTQ average (51 samples): 23795/51= 466.57 average

    2) Cad bone stock RWHP & RWTQ (A6 (28) + M6 (9)) (dynojet only): 06-29-11
    RWHP average (37 samples): 17087/37= 461.81 average
    RWTQ average (37 samples): 16835/37= 455.00 average

    3) Cad bone stock RAHP & RATQ (A6 (3) & M6 (2)) (Dynapack only): 06-29-11
    RAHP average (5 samples): 2484/5= 496.80 average
    RATQ average (5 samples) 2570/5= 514.00 average

    4) Cad bone stock RWHP & RWTQ (A6 only (28)) (dynojet only): 06-29-2011
    RWHP average (28 samples): 12705/28= 453.75 average
    RWTQ average (28 samples): 12582/28= 449.36 average

    5) Cad bone stock RWHP & RWTQ (M6 only (9)) (dynojet only): 06-29-2011
    RWHP average (9 samples) = 4383/9= 487.00 average
    RWTQ average (9 samples) = 4272/9= 474.67 average

    6) Cad bone stock RWHP & RWTQ (A6 only (33)) (all dynos): 06-29-2011
    RWHP average (33 samples): 14161/31= 456.81 average
    RWTQ average (33 samples): 13679/30= 455.97 average

    7) Cad bone stock RWHP & RWTQ (M6 only (17)) (all dynos): 06-29-2011
    RWHP average (17 samples): 8336/17= 490.35 average
    RWTQ average (17 samples): 8285/17= 487.35 average
    Updated & verified: 06-29-2011

    Was the baseline stock run done on the same dyno & correction factor as the after dyno?

  11. #26
    Jake CTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    I'm sorry I mis understood. When I first brought it into them it had a baseline of around 450rwhp then I did a CAI and axle back and that's what gave me 501 after that. Over the winter I had full exhaust put on it and that's when I got 513 after that. Now I just brought it in for the upper pulley and injectors and they put it on the dyno before and after they did the pulley. The before was 503 this time they said because of the warmer weather. All my dyno pulls have been on the same dyno.

  12. #27
    Gary Wells is offline Cadillac Owners Connoisseur
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    Re: Pulley combo..

    I'm new to this game, but that all sounds about correct to me.

  13. #28
    SerbsCTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    Quote Originally Posted by Jake CTSV View Post
    Just got it back on Friday. Not too happy with the numbers. 545rwhp and 530tq. I think it should have been a little better. Anyone else?
    My first wave of mods was similar to yours. i did the metco 2.4 upper pulley only with CAI and 160 thermo. Had it tuned at Speed-Inc and made 535rwhp. did my second wave of mods; 8.6 lower pulley, headers to stock mufflers, ID850 injectos, D3 intercooler and 29gpm pump upgrade...

    had it re-tuned yesterday at Speed-Inc and made 583whp and 591wtq. your numbers are pretty consistent. don't be disappointed.

    I am having Speed-Inc do the E85 conversion for me next. and then I am done with the car. That will put the car 625-630whp.

    But again, don't be too disappointed with your numbers with all you had done. if you look you basically have done the 630hp package with injectors. So your 545 is about 645 at the crank. So again your numbers are right on.

  14. #29
    Jake CTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    That's what I wanted to hear. Can't complain, the car runs great. Can't wait to get to the track and see the new numbers.

  15. #30
    Jake CTSV is offline Cadillac Owners Member
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    Re: Pulley combo..

    Got to the track over the weekend and was running consistant 11.30's on my worn out street tires. I'm thinking after I get my meth kit installed and some new tires I might be knocking on 10's door!

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