02-12-2010, 11:08 AM
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#1
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07 Carrera S Cab
Join Date: Nov 2005
Location: New Jersey
Posts: 2,273
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What kinda hp gain are we talking about here? 5 or 10hp? I ask because if only 5 or less, then it would not be worth the hassle to me, but if something like 10hp gain, then I'd consider it.
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Current: 07 Carrera S Cab in Midnight Blue
Previous: 01 Boxster in Arctic Silver, 86 944 in Guards Red
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02-12-2010, 11:42 AM
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#2
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Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
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Despite any actual values, this mod is one of the few that can be felt in the driver's seat.
I see 5-7 HP at the wheels and a torque increase of generally 5 lb/ft after the installation on my dyno. What should be more considered is this mod creates more power across the ENTIRE RPM range, so the average HP is increased and thats a much bigger gain on a stop watch or in the driver's seat than just a peak HP gain.
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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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02-12-2010, 11:44 AM
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#3
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07 Carrera S Cab
Join Date: Nov 2005
Location: New Jersey
Posts: 2,273
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Quote:
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Originally Posted by Jake Raby
Despite any actual values, this mod is one of the few that can be felt in the driver's seat.
I see 5-7 HP at the wheels and a torque increase of generally 5 lb/ft after the installation on my dyno. What should be more considered is this mod creates more power across the ENTIRE RPM range, so the average HP is increased and thats a much bigger gain on a stop watch or in the driver's seat than just a peak HP gain.
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Great. Thx for the reply Jake.
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Current: 07 Carrera S Cab in Midnight Blue
Previous: 01 Boxster in Arctic Silver, 86 944 in Guards Red
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02-12-2010, 12:20 PM
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#4
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Track rat
Join Date: Nov 2006
Location: Southern ID
Posts: 3,701
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Quote:
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Originally Posted by Jake Raby
Despite any actual values, this mod is one of the few that can be felt in the driver's seat.
I see 5-7 HP at the wheels and a torque increase of generally 5 lb/ft after the installation on my dyno. What should be more considered is this mod creates more power across the ENTIRE RPM range, so the average HP is increased and thats a much bigger gain on a stop watch or in the driver's seat than just a peak HP gain.
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This really is the key here. An increase of 5rwhp from 3000-6500 rpm is a lot more valuable than a gain of 5hp only from 6500-7000 rpm in terms of lap times. How much time do we really spend above 6500 rpm? Far more useful than the average software reflash at 1/5 the cost. I did it as a reliability mod to preserve my power steering pump on track days but the bit-o-power increase is icing on the cake. 
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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02-12-2010, 12:42 PM
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#5
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Porscheectomy
Join Date: Mar 2006
Location: Seattle Area
Posts: 3,011
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Quote:
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Originally Posted by Jake Raby
Despite any actual values, this mod is one of the few that can be felt in the driver's seat.
I see 5-7 HP at the wheels and a torque increase of generally 5 lb/ft after the installation on my dyno. What should be more considered is this mod creates more power across the ENTIRE RPM range, so the average HP is increased and thats a much bigger gain on a stop watch or in the driver's seat than just a peak HP gain.
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It should be decreasing the pumping losses exponentially as RPMs increase. At lower RPM, the gains are much less than at higher RPM.
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02-12-2010, 01:32 PM
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#6
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,614
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Quote:
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Originally Posted by Jake Raby
Despite any actual values, this mod is one of the few that can be felt in the driver's seat.
I see 5-7 HP at the wheels and a torque increase of generally 5 lb/ft after the installation on my dyno. What should be more considered is this mod creates more power across the ENTIRE RPM range, so the average HP is increased and thats a much bigger gain on a stop watch or in the driver's seat than just a peak HP gain.
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Jake, I went by your website, but could not find anything about the pulley; do you have info on it up anywhere yet?
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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02-12-2010, 01:43 PM
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#7
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Registered User
Join Date: Apr 2008
Location: Seattle
Posts: 92
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I was wondering the same thing. I have my debit card in hand, but cannot find a place on the web site to order the pulley.
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02-12-2010, 02:36 PM
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#8
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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Quote:
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Originally Posted by root_werks
I was wondering the same thing. I have my debit card in hand, but cannot find a place on the web site to order the pulley.
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Send a E-mail before they are gone.
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02-12-2010, 04:11 PM
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#9
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2001 RUF 3800S
Join Date: Mar 2009
Location: Ontario, Canada
Posts: 326
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When purcashing the UP, do you have to buy another belt? Why not reuse the oem one? and again how can I purchase this.
thanks
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02-12-2010, 04:25 PM
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#10
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Registered User
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,243
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Can someone post pix or a diagram of the underdrive pulley? It's like reading gibberish because I really don't know what this is or where it's located on my motor, but I'm liking the whole idea of more torque and HP for $150!!!
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02-12-2010, 04:29 PM
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#11
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Registered User
Join Date: Nov 2006
Location: Bastrop, TX
Posts: 705
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Not to speak for Jake. I just called thier shop and ordered it, sent in a check and 2 days later it was at my door.
Dont forgret the new belt. He has those as well.
New bolt from pelcan parts.
For randall, here is a picture
http://lh6.ggpht.com/_wrxsG6O0kbU/SyQYUfdA28I/AAAAAAAABD4/QUL2IRN1wsg/s400/DSC02639.JPG
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2002 S
Pedro rear stabilizer bar, CF strut braces, Maxspeed headers with 100 cell cats, Fabspeed cat bypass pipes, H&R springs with M030 setup, TRG rear links, EVO air intake, B&M Short shift kit, Raby IMS upgrade, Raby underdrive pulley
Last edited by jhandy; 02-12-2010 at 05:34 PM.
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2001 Porsche Boxster
2007 Carrera S Cabriolet
Lil Red
2009 Porsche Cayman 2.9L
Mean Motor Scooter
Hybrid Mode
