04-16-2010, 05:09 AM
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#1
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Registered User
Join Date: Nov 2007
Location: Chicago suburbs
Posts: 1,675
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You can spend thousands and only gain minimal HP the factory left as headroom...the only way you'll see appreciable gains are in increasing displacement. Any forced induction system will greatly reduce the life of already questionable internal components.
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__________________
JGM
2002 Boxster S
1973 911 Green FrankenMeanie
PCA DE Instructor circa '95
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04-16-2010, 07:31 AM
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#2
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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 jmatta
You can spend thousands and only gain minimal HP the factory left as headroom...the only way you'll see appreciable gains are in increasing displacement. Any forced induction system will greatly reduce the life of already questionable internal components.
Visit our sponsor, www.flat6innovations.com for more information.
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+1
A properly installed turbo kit is about $10K and if you push the motor hard you will need another one of those shortly when it grenades at around $15K. The factory 986 was simply not designed to work well with FI. With enough money anything can be done, but does it make sense on a fairly light weight, high compression motor?
Suggestion:
Learn to use all of your car first. A 3.2L Box S is a formidable track weapon in the hands of a skilled driver. The Boxster Spec racers are already turning lap times that rival 996 Turbos and GT3s at the track and they are running bone stock 2.5L pea shooters (stock intake, stock headers, stock internals). If after a year of DEs you still need more HP just drop in a 3.6L.
__________________
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
Last edited by Topless; 04-16-2010 at 08:02 AM.
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04-16-2010, 08:53 AM
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#3
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Registered User
Join Date: Mar 2009
Location: here
Posts: 244
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what these guys said
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04-16-2010, 09:09 AM
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#4
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Registered User
Join Date: Aug 2009
Location: London, UK
Posts: 155
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1. Better brakes
2. Better Suspension.
3. Driver training
Welcome to the club
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04-17-2010, 06:22 AM
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#5
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Registered User
Join Date: May 2008
Location: Toronto
Posts: 2,656
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Quote:
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Originally Posted by Gary H
1. Better brakes
2. Better Suspension.
3. Driver training
Welcome to the club 
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Did anyone tell him he bought the wrong car yet?
Seriously, the 986 platform just don't have the support for engine mods except the 3.6/3.8L swap which is perfect if it's done right.
987 guys have TPC Racing turbo kit, Sharkwerks RS350 kit that have been proven over and over again that they work.
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04-16-2010, 09:10 AM
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#6
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Registered User
Join Date: Jun 2009
Location: Central Ohio
Posts: 526
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Yep, the $20k plus question that has ghosted these boards for years. " HOW DO i MAKE MY BOXSTER FASTER".
With out doing major damage to your engine, There really is no miracle cure, except a 3.6-3.8 engine swap for $20k+. Any other gains you get will not be cost effective. I have searched high and low, read many articles and threads on the subject. There are many claims out there, but none have been substantiated with real proof. You can desnorkle your porsche and it will sound faster(cost=free).  This car wasn't made as dragster, but it will eat 99% of all cars up on the twisties(curves).  So anybody wants to race you, well make sure there are plenty of curves and you will crush them. Mustangs, Vettes, camaros.... will struggle to read you liscense plates around the twisties.
My friend has a 1985 supra twin turbo, which is by all means is one mean mutha!! He keeps wanting to race me, but I always reply, "that's not why I got the car". So as his only sees the road a couple times a year, I enjoy mine about any day its not raining!!
There is a reason Damn near all Boxster drivers are smiling when you pass them on the road!! The boxster is the ultimate all around driving experience!! So Just enjoy the ride!!
Last edited by mptoledo; 04-16-2010 at 09:13 AM.
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04-16-2010, 11:49 AM
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#7
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Registered User
Join Date: Apr 2008
Location: Southern New jersey
Posts: 1,054
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"I enjoy mine about any day its not raining!!  "
Why only when it's not raining! I had great fun this week in a light rain. Turn off the PSM, and do some power-slides like you have a big V8!
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04-16-2010, 02:48 PM
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#8
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Registered User
Join Date: Sep 2006
Location: Omaha
Posts: 2,953
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Welcome to the forum!
Do a search on intake manifold and headers to learn all you need to know about "gaining" HP. You'll find it's expensive ($3-4K) and these mods are only worth about 20-30 hp combined. Not a good investment. Plus pay attention to all the references to CELs popping after doing these mods. A lot of headache for very minimal gain. Throatier mufflers fall into the same category. For the money you'd spend on these 3 mods plus what you've got invested in you box, you could probably find a 987S that would have just as much or more HP in stock form.
Believe the previous posters when they say the best bang for your buck is to swap engines with a 911. If that's not a possibility and you absolutely crave more speed, sell your box and get something else that fits your needs. Your bank account will be miles ahead and you'll be happier too.
Sorry for the reality check, but Porsches are not cheap. We don't want you to go bankrupt chasing a few HP gains.
__________________
GPRPCA Chief Driving Instructor
2008 Boxster S Limited Edition #005
2008 Cayman S Sport - Signal Green
1989 928 S4 5 spd - black
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04-16-2010, 07:02 PM
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#9
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Registered User
Join Date: Jun 2009
Location: Central Ohio
Posts: 526
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Quote:
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Originally Posted by stephen wilson
"I enjoy mine about any day its not raining!!  "
Why only when it's not raining! I had great fun this week in a light rain. Turn off the PSM, and do some power-slides like you have a big V8!
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Cause I am too lazy to wash it(thats why I got silver and not black)
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04-17-2010, 01:40 AM
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#10
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Registered User
Join Date: Apr 2010
Location: Hawaii
Posts: 7
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Make Boxster faster
It's not advisable in the continental US, but I live in Hawaii with no emission standards. A 20 year Porsche mechanical guru took the existing codes from the car computer and sent them to Germany. The manufacturer then returned the factory codes with my VIN # and with original manufacturer codes. The new codes were re programmed into the cars computer for $395 and the car is no longer detuned with American emission standards. I now have a 1999 2.5 Boxster that whips my neighbors 2002 3.2S. Gas mileage has increased from 18-24mpg in the city and up to over 30mpg on what little freeways we have here. Horsepower has increased 50-70hps. It runs rich and wants to jump to a higher gear at 4000rpm. It took about 20 starts to set all the codes, however I noticed a huge performance change immediately. I was skeptical, however found 20 Cayman and 911 owners in Hawaii that had this procedure done. All you have to do is befriend your Porsche mechanic each year upon emission check, pay a small fee of $150 and you will love the results.
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04-17-2010, 06:51 AM
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#11
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Registered User
Join Date: Apr 2008
Location: Southern New jersey
Posts: 1,054
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Quote:
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Originally Posted by mptoledo
Cause I am too lazy to wash it(thats why I got silver and not black) 
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You have a point there, I have a black car, and now it looks filthy! I have to keep telling myself that I bought it to drive, not show, but it still bothers me.
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10-21-2010, 01:07 PM
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#12
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Registered User
Join Date: Apr 2010
Location: Wichita; KS
Posts: 144
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Quote:
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Originally Posted by Topless
Suggestion:
Learn to use all of your car first. A 3.2L Box S is a formidable track weapon in the hands of a skilled driver. The Boxster Spec racers are already turning lap times that rival 996 Turbos and GT3s at the track and they are running bone stock 2.5L pea shooters (stock intake, stock headers, stock internals). If after a year of DEs you still need more HP just drop in a 3.6L.
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Well spoken and good advice.
__________________
2000 New Beetle / in search of 03 986S triple black
Caractere kit seam sealed, Caractere rear wing, 1 3/4" drop on coilovers, 235/40/18 Kuhmo XS on 18x8 Millie Miglia Spider II's, H2sport spindles, H&R front Sway bar, O-bar rear torsion, VF Eng. motor mounts, G60 12# flywheel, Nuespeed P-flow intake, Forge DV, Samco IP, Custom K04 turbo and Upsolute chip, 4 bar fpr, TT 2 1/2" SS DP, 2 1/2" custom stainless exhaust no muffler, Peleguin LSD, B&M SS, Momo 14" wheel, R32 steering rack.
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10-23-2010, 02:44 PM
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#13
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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It's been said for decades: there's no replacement for displacement. My 3.6 has given a couple of Carrera S 997s more than they liked.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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