Your Dyno Numbers
7/6/07, 08:12 AM
#201
7/28/07, 05:34 PM
#206
It's somewhere around 6psi I believe. The Roush unit is a pretty small roots blower in comparison to the Whipple's and Kenne Bell's (1.4L I think). Roush sets their tunes conservative as well to maintain the 3/36000 factory warranty.
I am running Roush's upgrade pulley/tune and those numbers I got are pretty good for a Roush blower. With only a custom tune I can probably get 400 to 415 but not much more without doing anything else.
I am running Roush's upgrade pulley/tune and those numbers I got are pretty good for a Roush blower. With only a custom tune I can probably get 400 to 415 but not much more without doing anything else.
7/28/07, 08:49 PM
#207
Tasca Super Boss 429 Member
It's somewhere around 6psi I believe. The Roush unit is a pretty small roots blower in comparison to the Whipple's and Kenne Bell's (1.4L I think). Roush sets their tunes conservative as well to maintain the 3/36000 factory warranty.
I am running Roush's upgrade pulley/tune and those numbers I got are pretty good for a Roush blower. With only a custom tune I can probably get 400 to 415 but not much more without doing anything else.
I am running Roush's upgrade pulley/tune and those numbers I got are pretty good for a Roush blower. With only a custom tune I can probably get 400 to 415 but not much more without doing anything else.
Why is the Roush SC so weak compared to Vortechs, ProChargers, etc?
It's not weak, it will last longer.
If you want to order the warranty delete pkg. you can always have more power.
It all depends on how long you want to keep your engine.
7/31/07, 08:53 AM
#208
It's somewhere around 6psi I believe. The Roush unit is a pretty small roots blower in comparison to the Whipple's and Kenne Bell's (1.4L I think). Roush sets their tunes conservative as well to maintain the 3/36000 factory warranty.
I am running Roush's upgrade pulley/tune and those numbers I got are pretty good for a Roush blower. With only a custom tune I can probably get 400 to 415 but not much more without doing anything else.
I am running Roush's upgrade pulley/tune and those numbers I got are pretty good for a Roush blower. With only a custom tune I can probably get 400 to 415 but not much more without doing anything else.
The Roushcharger is a 1.6 or 1.8 liter if I remember correctly.
Comparatively, the Whipple and Saleen Series VI are 2.3s and the KBs come in 2.4, 2.6 and 2.8
Also there is the difference between the design as Roushcharger is a (modified) Roots style http://en.wikipedia.org/wiki/Roots_blower
while the others are twin screw. http://en.wikipedia.org/wiki/Twin-sc...e_supercharger
People can say what they want when it comes to dragstrip performance - out on the street on a daily driver, a properly tuned Roushcharger is nice and quick
8/6/07, 02:09 PM
#209
Former Vendor
Join Date: January 13, 2006
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As an example - Look at any back to back test of a Centrifugal vs a turbo on the same engine at the same PSI. While the turbo typically picks up 5% to 8% more power ( so like 20 more at teh same boost) the torque is usually more like 40% better witht he turbo. A vortech or procharger at 9 psi is lucky to see 390 to 420 ft/lbs and a turbo sees more like 490 to 510
8/6/07, 03:43 PM
#210
Join Date: February 2, 2006
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With my procharger I made 523rwhp and 493rwtq, this was at 11 psi, biggest pulley on it.
8/15/07, 01:19 PM
#211
8/15/07, 01:20 PM
#212
Not bad for some light mods (CAI, Tune, Mufflers). Using a 15% drivetrain loss, this is 325hp and 347ft-lbs at the flywheel:
8/15/07, 10:24 PM
#213
Bullitt Member
Join Date: February 3, 2006
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I agree a safe tune is KEY but 9psi with a centrifugal that only makes 1psi at WOT at 2500rpm vs a turbo that has all 9 psi by 2800rpm where the centrifugal would be luck to see 3 on a good day are 2 different stories.
As an example - Look at any back to back test of a Centrifugal vs a turbo on the same engine at the same PSI. While the turbo typically picks up 5% to 8% more power ( so like 20 more at teh same boost) the torque is usually more like 40% better witht he turbo. A vortech or procharger at 9 psi is lucky to see 390 to 420 ft/lbs and a turbo sees more like 490 to 510
As an example - Look at any back to back test of a Centrifugal vs a turbo on the same engine at the same PSI. While the turbo typically picks up 5% to 8% more power ( so like 20 more at teh same boost) the torque is usually more like 40% better witht he turbo. A vortech or procharger at 9 psi is lucky to see 390 to 420 ft/lbs and a turbo sees more like 490 to 510
Still, with a good tune, even a turbo-charged or posi-displacement blower can last a long time. Even at 9psi....
8/20/07, 06:42 AM
#216
8/20/07, 01:07 PM
#218
8/26/07, 06:02 PM
#220
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Join Date: November 10, 2005
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2006 GT Auto w/ JDM Stage 2 Saleen
JDM's kit (maf, injectors, air intake, 3.4 pulley) along with Corsa axlebacks
First pull off canned tune-- 449rwhp
Final pull with refined tuning and dialing it in a little "safer" A/F-- 441rwhp.
First pull off canned tune-- 449rwhp
Final pull with refined tuning and dialing it in a little "safer" A/F-- 441rwhp.