| 2004-2007 Cadillac CTS-V Performance Mods Discuss all Cadillac CTS-V performance modifications here. Engine tunes, exhaust, intake, suspension and more. | Cadillac Forums: Best guess at RWHP for these mods 
06-05-07, 07:21 PM
|  | Cadillac Owners Member Cadillac(s): 05 maggied CTS-V, 03 maggied Z06  | | | | | Re: Best guess at RWHP for these mods
Cost wise the maggie was one of easier ways but not "cheap".
Approx: $60.00 per hp of gain.
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I am so expensive I can't even afford to hire me.... |
06-05-07, 07:24 PM
| | Cadillac Owners Member Cadillac(s): 05 maggied CTS-V, 03 maggied Z06 | | | | | Re: Best guess at RWHP for these mods
Quote:
Originally Posted by rand49er  That's exactly what my guess was based on. Baseline LS6 is somewhere in the 320-330 RWHP area plus about 30 for those mods equals 350-360.
TB? Like the CAI, don't think it'll give much if any improvement. | The TB with a cam would compliment each other as would getting Rick to tune it. 
However, I would replace the valve springs (at the very least) if your gonna cam it. |
06-05-07, 11:57 PM
|  | How YOU doin? Cadillac(s): 2007 SRX (Previously 04 CTS-V) | | Join Date: Dec 2004 Location: Over here. No, not there. | | | Re: Best guess at RWHP for these mods
Quote:
Originally Posted by urbanski 42.. | 
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06-06-07, 07:56 PM
|  | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Best guess at RWHP for these mods
Scheduled to dyno my car at noon tomorrow at same place Woody_MI did his last January. Will try to post results tomorrow afternoon. 
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'05 CTS-V, Stealth Gray, Sunroof, 3M Clear Bra, B&M Shifter w/UUC Bushings, Specter Werkes Bushings, V Headrests, Wheel To Wheel Powertrain Tune, Corsa, Kooks w/Hi-Flo Cats, Ultimate Grid Pedals, Hotchkis Anti-Sways, STS-V Fogs, Ground Control 650R/600F, WW Clear Sidemarkers, Full-Size Spare, Magnuson SC Polished, CTS Console, FG2, Aggressive Street Alignment, MOMO Shift Knob, DSS/Hendrix Engrg Axles, UUC Flywheel. Soon: UUC MMs. 472 RWHP/411 RWTQ (Mustang dyno). |
06-06-07, 10:58 PM
| | Cadillac Owners Fanatic | | Join Date: Oct 2004 Location: Salem, OR Age: 69 | | | Re: Best guess at RWHP for these mods
My guess is the TPIS throttle body does about 8 rwhp, whereas the 90mm TB on a LS6 manifold does about 18 rwhp. I have done both, and that is what TPIS told me, and what I feel. Talk to TPIS directly. I guess you should pull 385 rwhp or so with a good tune. Your motor will vary from others as will the dyno. |
06-07-07, 01:03 PM
|  | Cadillac Owners Fanatic Cadillac(s): Cadillac cts v | | Join Date: Feb 2007 Location: Wisconsin Age: 54 | | | Re: Best guess at RWHP for these mods
Don't you need to modify the intake for the 90mm? |
06-07-07, 01:46 PM
|  | Cadillac Owners Master Cadillac(s): '05 CTS-V | | Join Date: Jul 2004 Location: Elkridge, MD Age: 37 | | | Re: Best guess at RWHP for these mods
Quote:
Originally Posted by trukk 369 RWHP SAE
354 RWTQ SAE
On a Mustang Dyno.
My mods are almost exactly what ou described:
- Kooks 1 3/4 LT Headers + Cats
- LPE CAI + StealthV FFV v 2 'squeeze tube' replacement
- Corsa
- KaTech Ported TB
- Dyno Tune.
-Chris | LOL, did I mention that my estimate was not a guess?
-Chris
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2005 CTS-V:No Roof|FG2|Corsa|UUC Shifter, B-Lines, Motor/Tran Mounts, Diff Bushings|LPE CAI|FFV IntakeTube|Hawk HP+ |Hotchkis Sways|Kooks 1.75 Coated LTs + cats|KARS III |Mamofied Fast90 + NW90|224/228 111+0 XFI/XE-R .609/.588|ATI 25% UD Pulley|YT 1.7" UltraLites|Melling HiFlow Oil Pump|Comp Chromeoly 7.425" PR's|Cloyes Hex Adjust Timing Set|Lucas 42# Flow Matched Injectors|Patriot Gold Xtreme Springs, Ti retainers, Super 7 locks|All ARP Fasteners|Mustang Dyno Tuned (SAE): 412rwhp / 380 rwtq |
06-07-07, 03:36 PM
| | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Best guess at RWHP for these mods
Quote:
Originally Posted by rand49er Scheduled to dyno my car at noon tomorrow at same place Woody_MI did his last January. Will try to post results tomorrow afternoon. | Just got back, and ...
Corr Factor: STD
Run 1: 355.15 RWHP/343.83 RWT
Run 2: 357.87 RWHP/347.54 RWT
Run 3: 352.91 RWHP/342.55 RWT
Corr Factor: SAE
Run 1: 349.16 RWHP/(n/a)
Run 2: 351.70 RWHP/(n/a)
Run 3: 347.14 RWHP/(n/a)
I must have missed getting a printout of SAE corrected RWT.
Scanning software is NOT loaded (apparently  ) on my computer, so the images below are the best I could do. BTW, compare this to Woody_MI 's results from last January on his stock '06 V with the LS2 as this was on the same dyno: http://www.cadillacforums.com/forums...highlight=dyno You LS2 guys should be VERY happy, that's all I've got to say.
Oh, I forgot to mention, that's the first time I've been standing behind the car during WOT, high RPM running ... well, let's just say it's L-O-U-D !!!
Last edited by rand49er; 06-07-07 at 03:39 PM.
Reason: add some words about sound
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06-07-07, 04:13 PM
| | Cadillac Owners Master Cadillac(s): '05 CTS-V | | Join Date: Jul 2004 Location: Elkridge, MD Age: 37 | | | Re: Best guess at RWHP for these mods
Quote:
Originally Posted by rand49er Just got back, and ...
Corr Factor: STD
Run 1: 355.15 RWHP/343.83 RWT
Run 2: 357.87 RWHP/347.54 RWT
Run 3: 352.91 RWHP/342.55 RWT
Corr Factor: SAE
Run 1: 349.16 RWHP/(n/a)
Run 2: 351.70 RWHP/(n/a)
Run 3: 347.14 RWHP/(n/a)
I must have missed getting a printout of SAE corrected RWT.
Scanning software is NOT loaded (apparently ) on my computer, so the images below are the best I could do. BTW, compare this to Woody_MI 's results from last January on his stock '06 V with the LS2 as this was on the same dyno: http://www.cadillacforums.com/forums...highlight=dyno You LS2 guys should be VERY happy, that's all I've got to say.
Oh, I forgot to mention, that's the first time I've been standing behind the car during WOT, high RPM running ... well, let's just say it's L-O-U-D !!! | WOW, that's quite a difference between you and I, and mine was on a Mustang Dyno, not a DynoJet, which usually shows much higher.
Your A/F doesn't look out of wack, to my untrained eye.
Could it be that there IS something to those useless CAI + TB mods I have, as they are our only real difference?
I know it's hard to compare dyno to dyno, but after seing the LS2 graph on the same dyno 
-Chris
Last edited by trukk; 06-07-07 at 04:15 PM.
Reason: Added my Sig, which is not normally in a reply, so people don;t have to scroll up to see my mods.
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06-07-07, 06:47 PM
| | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Best guess at RWHP for these mods
Chris, I've always heard/read the DynoJet and Mustang dynos yield different numbers, and I can never remember which one typically reads higher than the other. (Others here know far better than I on this.)
I think the raw numbers are of limited use for comparison with others (unless, of course, you're in a bar or online and yours are higher than the other guy's  ... j/k). Mine are to be used as a baseline for my next mod. Hopefully, I'll be back on that same dyno sometime in July to see what exact increase I've achieved. 
You know, on another related subject, we keep putting the squeeze on the dif in these cars by modding our engines, and something just has to be done. Wouldn't it be great if the '09 dif could be easily installed in our cars? 
Last edited by rand49er; 06-07-07 at 06:48 PM.
Reason: sp
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