10-09-2013, 01:51 PM
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#1
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I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,432
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Holy crap!!!
Instant HP off the line, right where you want more.
I can't believe they don't come this way. Lots of power.
Can't wait to do cat deletes. They should be in any day!!
__________________
'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
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10-10-2013, 04:50 AM
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#2
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Registered User
Join Date: Jul 2013
Location: Maryland
Posts: 189
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How much more HP are we talking?
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2001 Boxster S - Triple Black -
Billy Boat Muffler
ROW M030 Suspension
LNE IMSB
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10-10-2013, 06:36 AM
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#3
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I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,432
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Quote:
Originally Posted by PorscheBound
How much more HP are we talking?
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Not sure, but very, very noticeable. An absolute must for a simple bolt on mod that gives so much. Can't imaging all that new power to the wheels still being absorbed by the engine components.
__________________
'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
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10-10-2013, 01:42 PM
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#4
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Quote:
Originally Posted by PorscheBound
How much more HP are we talking?
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In this thread (fourth post), engine builder Jake Raby says that he has measured +5HP at the rear wheels when using a UDP.
http://986forum.com/forums/general-discussions/37563-underdrive-pulley-questions.html
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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10-10-2013, 08:41 PM
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#5
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Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
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Quote:
Originally Posted by thstone
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We see this number over and over again with the 4" pulley. The UDP is THE best bolt on for net gains available.
__________________
Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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10-11-2013, 05:39 AM
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#6
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Registered User
Join Date: Jul 2005
Location: MA
Posts: 884
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Does it have any more/less impact on the 2.5/2.7 motors vs. the 3.2 motors, or is it a flat 5HP due the common ancillary components used on all engines?
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98 Arena Red 986
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10-11-2013, 07:05 AM
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#7
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Registered User
Join Date: Nov 2004
Location: New Jersey
Posts: 8,709
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Quote:
Originally Posted by Jake Raby
We see this number over and over again with the 4" pulley. The UDP is THE best bolt on for net gains available.
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What's the second best? 
p.s.
While you are(n't) endorsing products, do you mind sharing the make of the UDP that you use in your testing?
__________________
GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
Last edited by Perfectlap; 10-11-2013 at 07:08 AM.
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10-12-2013, 04:16 PM
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#8
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Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
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Quote:
Originally Posted by Perfectlap
What's the second best?
p.s.
While you are(n't) endorsing products, do you mind sharing the make of the UDP that you use in your testing? |
Its not commercially available.
__________________
Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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