04-01-2014, 02:19 PM
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#21
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Registered User
Join Date: Apr 2012
Location: Riverside, CA
Posts: 1,665
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Quote:
Originally Posted by Bigsmoothlee
To the guy holding the temp gun directly at the vent and testing the AC at 70 degrees....
This test is a fail for several reasons.
#1. Holding the temp gun right in the stream of the cold AC makes the reading artificially lower.
#2. Its 70 degs, but what was the humidity?
#3. When its really hot at stop lights, I sometimes rev the engine to 1200 rpm to get some better AC.
Please revise your experiment and show us a AC manifold hooked up and before and after pic with the pressures.:dance:
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Really!!!!
OK, here is the new result: 
__________________
"It broke because it wants to be Upgraded  "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
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04-02-2014, 05:11 AM
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#22
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Registered User
Join Date: May 2011
Location: weehawken nj
Posts: 240
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Quote:
Originally Posted by jb92563
Really!!!!
OK, here is the new result:
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Well, either way, it isnt going to stop me from installing an underdrive pulley. Did you get any noticeable gains in power?
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04-02-2014, 07:03 AM
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#23
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Registered User
Join Date: Apr 2012
Location: Riverside, CA
Posts: 1,665
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Quote:
Originally Posted by Bigsmoothlee
Well, either way, it isnt going to stop me from installing an underdrive pulley. Did you get any noticeable gains in power?
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I think Raby documented a gain of 5 HP when he tested his own cars.
I do feel the noticable increased torque at the lower to mid range.
Couple this with my 2nd cat delete which improved throttle response quite a bit and I now have acceleration from a dead stop that you actually have to manage a bit more to keep traction under control. Plus I have an "S" so its doubly awesome.
Very worthwhile, you wont regret it.
If I only had $700 to do mods then the first would be the 2nd cat delete and after market dual mufflers and the 2nd would be the Under Drive pulley.
__________________
"It broke because it wants to be Upgraded "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
Last edited by jb92563; 04-02-2014 at 07:05 AM.
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04-02-2014, 12:24 PM
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#24
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Registered User
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,249
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A/C works just fine at this end as well.... custom made 4"UD (same as the other stuff) ran for the last 24 months + no issue.
5HP? wouldn't be surprised its a tad more than that
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
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04-02-2014, 07:25 PM
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#25
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02 box s
Join Date: Sep 2011
Location: alabama
Posts: 226
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Quote:
Originally Posted by jb92563
Really!!!!
OK, here is the new result:
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Very funny. Best rebuttal I have seen in ages. Thanks for the laugh.
__________________
Gone- 02 boxter s
02 911 carrera2, full leather, tubi exhaust, colored gauge faces, agency power short shift, DOF IMS fix, litronics, tech art shifter, spin on filter adapter
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04-03-2014, 07:01 AM
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#26
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Registered User
Join Date: May 2011
Location: weehawken nj
Posts: 240
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Quote:
Originally Posted by sgt brad
Very funny. Best rebuttal I have seen in ages. Thanks for the laugh.
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Just trying to educate the kids in the sandbox on how to use a temp gun!
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04-12-2014, 11:09 PM
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#27
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Registered User
Join Date: Sep 2009
Location: The City
Posts: 1,084
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I have the Precision chassis works UDP for about three years now on a daily driver, only issue is a slight skip in audio sometimes at low RPM.
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04-13-2014, 12:17 AM
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#28
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Quote:
Originally Posted by Lobo1186
I have the Precision chassis works UDP for about three years now on a daily driver, only issue is a slight skip in audio sometimes at low RPM.
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I actually have this same issue. It's happens more frequently when the headlights are on. Otherwise no problems including one 99 degree day last Friday. A/C had no problems cooling the cabin quickly and the coolant temp stayed right on the number 8.
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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04-13-2014, 08:28 AM
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#29
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Registered User
Join Date: Oct 2008
Location: Gilbert, AZ
Posts: 266
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I have more of those pulleys available. They are being anodized black now and come with a new OEM bolt. I have 10 more left.
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04-13-2014, 08:47 AM
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#30
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Registered User
Join Date: Oct 2008
Location: Gilbert, AZ
Posts: 266
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04-18-2014, 08:22 AM
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#31
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Registered User
Join Date: Jul 2008
Location: austin
Posts: 824
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Went with this one off of ebay.
 Porsche 986 996 997 4" Under Drive Pulley with AC TRS Motorsports New | eBay
Based on comments from the forum I went with a solid one, I also liked that it had
the same groove pattern and was a complete kit.
If I have any issues -- I'll post, but so far so good.
Thank you for everyones guidance.
Mike
__________________
Drivers: '15 Panamera Hybrid (wife's), ' 01 996 GT2, 00 Boxster S, '96 993 Çab/Tip (wife's)
Race Cars: '75 911 RSR Replica & '99 Spec Boxster
mike@lonestarrpm.com
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08-23-2014, 09:09 AM
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#32
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Registered User
Join Date: Jul 2014
Location: Canada
Posts: 487
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Just had a Mantis 5"installed a couple of days ago. I think I can feel a difference in the 3 to 5 k rpm range.
__________________
99 Boxster sold
88 944S sold
Xpit Formula Four sold
95 Integra Solo I sold
71 Opel GT sold
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08-23-2014, 11:10 AM
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#33
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Registered User
Join Date: Jul 2008
Location: austin
Posts: 824
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4.5 months in -- so far so good -- no real issues except my water temp will climb a little if I am idling and I do NOT have the AC on.
I think the AC kicks up idle a couple hundred RPM and this is sufficient to spin the H2O pump enough to keep up with cooling needs.
Mike
Quote:
Originally Posted by seningen
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__________________
Drivers: '15 Panamera Hybrid (wife's), ' 01 996 GT2, 00 Boxster S, '96 993 Çab/Tip (wife's)
Race Cars: '75 911 RSR Replica & '99 Spec Boxster
mike@lonestarrpm.com
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