09-08-2012, 03:44 PM
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#1
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Registered User
Join Date: Jul 2010
Location: California
Posts: 1,859
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Anybody A Fan?
IPD Plenums | Porsche
I am reading claims of significant HP gains using IPD intake plenum... Anyone have experience with their products?
Thanks
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Jäger
300K Mile Club
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09-08-2012, 05:18 PM
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#2
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Registered User
Join Date: Mar 2010
Location: canada
Posts: 445
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It sounds great but because I have/had air leaks I believe that skewed the performance results. Looking to get that rectified next week.
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09-11-2012, 06:20 AM
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#4
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Registered User
Join Date: Apr 2012
Location: Riverside, CA
Posts: 1,665
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Without an adjustment to the cars DME engine computer I would be surprised if there is any measurable improvement at all.
The computer controls the fuel/air ratio based on the sensors and is tuned to the software loaded specific rate setting (Curve) for the conditions reported by the sensors.
If the plenum is not restricted and can accomodate that volume of air already then making it more free flowing will not likely alter the power being generated since the amount of fuel being burned has not changed, unless you get the computers maps changed as well.
Thats why serious tuners always have to change the maps to get measurable improvements.
If it was just about air volume, you could just put an electric fan in your intake to supply a higher volume, like a blower or turbo but much less extreme.
So if you are going to "Pretty" up the engine you may as well save your dollars on the fancy plenums for the DME tuning for the real gains.
Having said that, if you do increase the rate of fuel burn and power then having adequate air in the form of bigger throttle body and ducts is also essential.
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"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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09-11-2012, 06:52 AM
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#5
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Registered User
Join Date: Dec 2006
Location: shoreham, ny
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I dynoed it. Well worth the money. Add a larger throttle body for even more gains. Marginal gains about 5-7 hp across the board. 27hp when you kick over to high cam. Still on my car.
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996 3.4 engine with 2.7 986 5speed transmission
Ebay Headers, Fabspeed high flow cats, JIC Cross, IPD Plenum, H&R Coilovers, B&M Short Shifter, AEM Uego Gauge Type Analog, Apexi S-AFC Select, 987 air box, Litronics, 2000 Tails and side markers, painted center console, 18" 987 S-Wheels, GT3 Front bumper with splitter.
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09-11-2012, 06:38 PM
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#6
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Registered User
Join Date: Jul 2010
Location: California
Posts: 1,859
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Quote:
Originally Posted by JAAY
I dynoed it. Well worth the money. Add a larger throttle body for even more gains. Marginal gains about 5-7 hp across the board. 27hp when you kick over to high cam. Still on my car.
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Do you have a picture or graph of the dyno test you can share?
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Jäger
300K Mile Club
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09-13-2012, 11:47 AM
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#7
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Jaay, did you also do an ECU tune to get a 27hp gain?
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
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