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Old 03-16-2009   #1 (permalink)
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Default Anyone reccomend the v6 underdrive pulley?

Alright its time for me to consider my next bolt on, and I liked the numbers that the UDPs put up. However I have heard mixed things about the v6 UDP and therefore I don't know what to believe. I understand how the v8 set of 3 help alot but the one for the v6 is just a crank pulley. Has anyone done this to a 2005+ v6 and is it worth 300 dollars?
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Old 03-16-2009   #2 (permalink)
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iv always heard not unless your f/i.
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Old 03-17-2009   #3 (permalink)
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Quote:
Originally Posted by burnrubber4.0 View Post
iv always heard not unless your f/i.
If you're supercharged then an underdrive crank pulley will hurt you performance-wise because you'll be underdriving the supercharger, which will lower your boost. I'm not sure how much impact UDP's have on turbo charged vehicles.

I do know that you can only expect 5-10 rwhp if that from an UDP on the 4.0l v6. They just don't help that much. You might consider a bigger throttle body, a screamin demon coil and livewires or an aluminum drive shaft instead.

And if you dont have gears/tlock or an 8.8" rear installed then you should forget about these little bolt ons and focus on your bigger mods first.
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Old 03-17-2009   #4 (permalink)
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Quote:
Originally Posted by Black05Pony View Post
If you're supercharged then an underdrive crank pulley will hurt you performance-wise because you'll be underdriving the supercharger, which will lower your boost. I'm not sure how much impact UDP's have on turbo charged vehicles.

I do know that you can only expect 5-10 rwhp if that from an UDP on the 4.0l v6. They just don't help that much. You might consider a bigger throttle body, a screamin demon coil and livewires or an aluminum drive shaft instead.

And if you dont have gears/tlock or an 8.8" rear installed then you should forget about these little bolt ons and focus on your bigger mods first.

has anyone else herd bad things about the BBK 70 mm TB?
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Old 03-17-2009   #5 (permalink)
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had one installed only thing it was good for was throwing codes tuners dont really even notice them and like i said mine was good for throwing codes. 289 bucks of worthlessness.
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Old 03-17-2009   #6 (permalink)
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good to know
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i have yet to find some one else who when changing their oil ( every 2000 miles or when they get bored ) details the under side of their car.

X-C April 2010,Heads, Cam,Internals April 2011, or blown engine, witch ever comes first.
The transformation has begun!
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Old 03-17-2009   #7 (permalink)
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Originally Posted by Smokey88 View Post
had one installed only thing it was good for was throwing codes tuners dont really even notice them and like i said mine was good for throwing codes. 289 bucks of worthlessness.

i installed my bbk throttle body i got just a little under 9 hp at the dyno and it never threw a code at all to me it was worth the money
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Old 03-17-2009   #8 (permalink)
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So what was the verdict on the UDP?
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2008 v6 Pony Package.
Performance mods: Aluminum Driveshaft, Screamin' Deamon Ignition Coil, Red Livewires... and an STS turbo kit with an intercooler,and water methanol injection.

5 psi~ 286rwhp, 331 rwtq

Other Mods: Window Louvers, 2 10" MA subs, 1200 watt RMS Hifonics amp. Tial 50mm BOV.
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Old 03-17-2009   #9 (permalink)
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if you plan to get a supercharger you will wast your money with a udp im also looking at my next mod and im considering a new 8.8 rear end and gears dont wast your money on something your not gonna need down the road
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