Welcome to RennTech.org Community, Guest
There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.
Here are some of the features available - once you register at RennTech.org
- View Classified Ads
- DIY Tutorials
- Porsche TSB Listings (limited)
- VIN Decoder
- Special Offers
-
OBD II P-Codes - Paint Codes
- Registry
- Videos System
- View Reviews
- and get rid of this welcome message
It takes just a few minutes to register, and it's FREE
Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)
- No ads - advertisements are removed
- Access the Contributors Only Forum
- Contributing Members Only Downloads
- Send attachments with PMs
- All image/file storage limits are substantially increased for all Contributing Members
- Option Codes Lookup
- VIN Option Lookups (limited)
Waynew
-
Posts
9 -
Joined
-
Last visited
Waynew's Achievements
Member (1/1)
0
Reputation
-
Frank, I got the filters at FVD Brombacher. (954) 571 2050. Ask for Rhonda. The part No. is 470 468 20 BMC Sport Air Filter 977 X51. I have never had a problem with them. Just don't over oil them. (They come pre oiled and are just right from the factory.) I would recommend them over the stock X51 filters for both quality and performance. Wayne
-
Thanks Dave. It's good to know my "seat of the pants" dyno was not incorrect. I agree the X51 TB with the modified RSS Plenum is the best way to make the X51 airbox + X51 TB work. Phillip, I was not aware of the RSS option when I was putting the parts together. I took my stock plastic plenum in the shop and told them I wanted the X51 to match my plastic plenum. The shop guys suggested I use the RSS plenum. I agreed to the recommendation and they got the parts and machined it to work. I just picked up the machined RSS part and assembled everything back together! The only other alternate is to use the stock 997S TB with a "rubber bushing" to mate up the the X51 airbox. With the mods I have made: X51 Air Box, X51TB, Fabspeed Headers, Fabspeed Mufflers, I am very satisfied with the results. (Maybe not 400 HP, but a lot more than 355.) The car has great acceleration and the track time has greatly improved! (Unfortunately not my driving skills.) Wayne
-
I live near Louisville Ky. I don't know exactly what was done to modify the RSS plenum. (I did not see the part until after the modification, and the fit was perfect.) I do know that it took a bit of machine shop work to make the fit. I did not want to modify any stock parts on my 997S (ie manifolds or X51 TB) and the stock plastic plenum was not a ggod choice for machining. The stock RSS was suggested because it was metal and could be easily modified. Wayne
-
Yes I had the existing RSS IPD modified. I recommend a good machine shop unless you have the tools and the talent. Wayne
-
Dave, You were correct about the Road & Track article 1/4 mile time. I was basing the timing et on my "recall" which apparently was not exact. However, the X-51 TB will work on the existing 997S intake manifolds without modification to the TB or stock intake manifolds. The TB connects directly to a plastic intake distribution tube (Plenum). You have to use a RSS IPD Plenum that has been adapted to fit the stock X51 TB. This is not a big deal. Wayne
-
Yes, Road & Track Tested a stock 2005 997S and reported 0-60 time of 3.9 sec., but the 1/4 mile was about 12.8 @ 110 as I recall. I have not dyno'd my car but my track time comparison is better and the acceleration differences are significant as follows: Stock 997S 0-60 best time = 4.1 1/4 mile best time = 12.9 @ 111.9 Modified 997S 0-60 best time = 3.9 1/4 mile best time 12.2 @116 To answer the question about the X - 51 throttle body, the base attachment is exactly the same as a stock 997S TB, so no modifications are required. The intake is larger. You can use a stock TB with the X-51 air box, but it requires a "bushing" at the rubber to TB connection. Wayne
-
997 intake
Waynew replied to jam996's topic in 997-1 Series (Carrera, Carrera 4, Carrera 2S, Carrera 4S)
I it all at Suncoast Porsche. The air box was $1000. I don't recall the TB price. You can get on their website and review their parts catalog online. Wayne -
997 intake
Waynew replied to jam996's topic in 997-1 Series (Carrera, Carrera 4, Carrera 2S, Carrera 4S)
I have a 2008 997S airbox with the fabspeed "cold air kit" and BMC air filter. The air intake system had 2000 miles on it when I replaced it, so it is near new condition. The fabspeed cold air upgrade was $220 and the BMC filter was $120. (This does not include the OEM 911 S air box.) This unit will fit the 997 Carrera, but has the badging of the 3.8L S engine. I have replaced my air box with the X-51 carbon fiber system. (Including the throttle body.) The whole unit is sitting in my closet and I would be willing to sell it to you for a reasonable price. If you are interested let me know. Wayne -
Hi; I have considered all options for performance. (I don't like turbo, and superchargers/ chips void your warranty.) I really prefer both the sound and response of naturally aspirated engines. I have a 2008 997S and have been very successful with HP/ performance gains by adding the following: 1)Fabspeed headers/ mufflers, 2)X-51 Carbon Fiber Airbox with new X-51 throttle body, 3)BMC air filters. You can do all of this for about $5K if you do the install yourself. I have not dyno'ed the changes but can guarantee you will be satisfied with the "seat of the pants" test. I have road tested by comparing to the new 997-2 (385HP) and smoked the new 997 in both 1/4 mile and track time. 0-60 times are 3.9 sec., 1/4 mile 12.2@116mph. (This is pretty darn close to GT3 specs.) This would be my recommendation for HP/ Performance enhancements. Wayne