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Cadillac STS-V Series Forum Discussion, Striking the balance - Power/Economy in Cadillac V-Series Forums; This begs a question: which one sounds best on STSV??...
  1. #31
    OMG-V's Avatar
    OMG-V is offline Cadillac Owners Fanatic
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    This begs a question: which one sounds best on STSV??

  2. #32
    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: Striking the balance - Power/Economy

    I think the issue here is, did you remove the resonator? If so, that might be the issue. I replaced mine with a Magnaflow there also.

  3. #33
    264WOODY is offline Cadillac Owners Member
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    Quote Originally Posted by CMNTMXR57
    I think the issue here is, did you remove the resonator? If so, that might be the issue. I replaced mine with a Magnaflow there also.
    The only thing I did, was replace the axel back, I left everything else alone. Everything is bone stock. I haven't even put on a C.A.I.. Still deciding on specter or TimmyC or just keep it stock.

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    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: Striking the balance - Power/Economy

    I was directing that OMG-V.

  5. #35
    neurotictim is offline Cadillac Owners Fanatic
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    Quote Originally Posted by CMNTMXR57 View Post
    Borla, on an LSx F-Body is actually one of those systems that I would always argue that being loud for the sake of being loud, doesn't sound good. They sound like someone is shaking a tin can full of rocks. On other engines (older LT1's for example), they sound excellent. There is just something about the LSx, it's firing order, cam profiles that just don't sound good with a Borla.
    Maybe we disagree on what "good" sounds like, or maybe he had something else going on under there. I say that because it wasn't by any stretch the loudest car, and.it didn't sound at all like what you describe. Nice, relatively quiet bassy rumble at idle, full-on throaty roar up higher in the rpms. I was in love at throttle blip, lol.

    Sent from AutoGuide.com Free App

  6. #36
    OMG-V's Avatar
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    Quote Originally Posted by neurotictim
    Maybe we disagree on what "good" sounds like, or maybe he had something else going on under there. I say that because it wasn't by any stretch the loudest car, and.it didn't sound at all like what you describe. Nice, relatively quiet bassy rumble at idle, full-on throaty roar up higher in the rpms. I was in love at throttle blip, lol. Sent from AutoGuide.com Free App
    Nice rumble at idle but when you drive it "normally" between 2 and 3000 rpm, it just doesn't sound cool or sporty. Magnaflow and Corsa sound better. I didn't remove anything but maybe someone else did.

  7. #37
    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: Striking the balance - Power/Economy

    Yea, that isn't a Borla on an LSx F-Body. I had an ATR system on mine (Grotoyhann LT's, Grotoyhann Y-pipe through Random Tech cats, and the ATR system). That was low, rumbley, and bass'y. B&B's, Corsa, and Magnaflow were another. If one wanted to throw in the big 4" Mufflex system, that added LOUD too, but it still sounded good.

    Again, if you're talking about an LT1/4, COMPLETELY different story! But an LS1... A tin can with rocks in it being shaken.

  8. #38
    PCFool is offline Cadillac Owners Member
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    Re: Striking the balance - Power/Economy

    About 12 years ago after buying a 98 Z28 I had put the SLP Loudmouth exhaust on it and to me it sounded fantastic. It was definitely loud when you put your foot into it. LOL sometimes idling through a car ramp/garage it would set off other car alarms. I had put on over 200k rounds myself before selling it.

    Anyway I will be looking for something that sounds good on my V soon enough. Anyone have issues with passing the emissions tests in CA with their mods?

  9. #39
    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: Striking the balance - Power/Economy

    Loudmouths sound fantastic... outside the car.

    Inside though, a headache and interior parts rattling/vibrating, I took it off.

  10. #40
    neurotictim is offline Cadillac Owners Fanatic
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    Okay, so here's what I'm thinking.

    Quote Originally Posted by CMNTMXR57 View Post
    412 rwhp on Speed Inc's dynojet 248c.

    - Spectre intake (both parts)
    - Magnaflow mufflers
    - 160* t-stat
    - Speed Inc. (sic) tune
    Now, if I add Tim's headers and a supercharger port & polish, is there a reasonable chance to hit that 450? Looks like about $2500, does that sound about right?

    Or, given the heatsoak issue, would it make more sense to go with the intercooler upgrade first, for reliability or performance?

  11. #41
    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: Striking the balance - Power/Economy

    I'd address heatsoak issues first. It'll address both.

    I made 412 on a cold engine (it was still at operating temp, but hadn't had a chance to heatsoak), and on a cooler March day. Later I came back, on a fresh, off the street driven, July afternoon for a tune update, and the car lost 26rwhp, and something like 80 - 90 lb/ft of torque. So yea, you get one or two, maybe 3 runs at maximum power, then the car falls flat on it's face due to heatsoak.

  12. #42
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    Re: Striking the balance - Power/Economy

    Quote Originally Posted by CMNTMXR57 View Post
    I'd address heatsoak issues first. It'll address both.

    I made 412 on a cold engine (it was still at operating temp, but hadn't had a chance to heatsoak), and on a cooler March day. Later I came back, on a fresh, off the street driven, July afternoon for a tune update, and the car lost 26rwhp, and something like 80 - 90 lb/ft of torque. So yea, you get one or two, maybe 3 runs at maximum power, then the car falls flat on it's face due to heatsoak.

    Not if you have it set up right. I made my passes at the track back to back for 3 runs never turning the car off when weighting and did not loose any speed our time. In fact it went faster. Made 6 back to back pulls on the dyno and made with in 7hp +\- we were checking for heat soak. So you just need to have the set up perfected be for you go for power. And the more power/psi you make the more heat you make.

  13. #43
    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: Striking the balance - Power/Economy

    And I don't because I have not addressed it (the CAC), with any modifications.

  14. #44
    neurotictim is offline Cadillac Owners Fanatic
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    Re: Striking the balance - Power/Economy

    Okay, so what about an additional heat exchanger? Realistically I'm not going to spend a TON of time on the dyno, and likely very little time at the track. So what do you guys think of this:

    http://www.frozenboost.com/product_i...6a0fc86f6d53c1


  15. #45
    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: Striking the balance - Power/Economy

    It isn't just a dyno or track thing though. On the street, a couple WOT runs will get it just as hot, especially if you get caught up in traffic.

    Talk to TimmyC. He has a complete setup made and sells.

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