Pat Williams Racing - Home  PWR homepage with direct links to categories below.  Maps to Pat Williams Racing    Distances to/from Memphis from various cities, highlighted downloadable route map for I-40 to PWR for both large and small tow vehicles.  MapQuest directions to Pat Williams Racing  Standard Mapquest directions from any location to Pat Williams Racing  About Pat Williams Racing     General information about us, shop philosophy, biography, about us and shop protocol.  Philosophy  We have a basic unwaivering three part philosophy at PWR.  Biography  Pat William's background with Porsches  About US  Who we are and what our shop is equipped to do.  Shop Protocol  Scheduling, shipping of engine/trans/vehicles and email/phone protocol outlined.  Street Vehicle Services    Providing standard services on all 901/911/964/993/996/997, Boxter and Cayenne, we are one of very non-dealer facilities with a PST tool for interfacing, diagnosing and resetting codes for Porsche OBDII type systems.  Routine Service  All standard maintenances for 901/911/964/993/996/997, Boxter and Cayenne performed utilizing one of the few independent shop owned factory PST- 2 machines - and increasingly on vehicles still under warranty.  Rebuild & Modification  Outlines full variety of modifications and engine/trans/chassis rebuilds we perform in any combination for your vehicle.  CIS to EFI Conversion - 930/911 Turbo    The first mass produced CIS to EFI conversion for your 930/911 Turbo using OEM components and retaining your original manifold, we provide three versions..  Compare - stock/EFI Though you'll see this system outlined at length on the links below, you'd probably like to know up front exactly if or what the PWR-EFI conversion will do for throttle response and power on your stock 930/911 turbo.  Compare - stock/EFI  Though you'll see this system outlined at length on the links below, you'd probably like to know up front exactly if or what the PWR-EFI conversion will do for throttle response and power on your stock 930/911 turbo.  Advantages  The advantages of an EFI conversion over the original CIS are outlined.  EFI components    What does this EFI conversion include. We provide pictures of each component and an explanation. Shops, please note, we now sell not only the manifolds only as a kit, interfaces and software to program this system.  EFI manifold kit  We now sell not only the manifolds-only as a kit, but interfaces and software to program this system. Components of that kit and engine fitment illustrated here.  CIS components  What will you no longer need from your CIS system with this conversion? We outline all the components with pictures.  Development  PWR-EFI described from machining of the original injector manifolds to the engine dyno and finally in preparation for installation in our test vehicle.  Refinement    From journalists to customers, the most frequentl comment concerns the incredible drivability and lack of throttle lag. We use a three step process to make PWR-EFI drive lack OEM.  PWR-EFI-1 Refinement - Stock Engine     PWR-EFI-1 Refinement - Package Engine      PWR EFI Package Engine  The most dramatic results with a PWR-EFI conversion are achieved when fitted and tuned to an engine optimized to take full advantage of refined fuel and ignition. PWR produces several engine configurations for PWR-EFI I through III. View the dramatic results of PWR-EFI-I fitted to the standard PWR Package Engine.  Excellence Article on the PWR-EFI Conversion Excellence Magazine spent a day at our shop, viewed conversions and development work in progress and rode in our white car. We've posted their article to our site for you to download and read.  PWR- CIS to EFI Conversion Fact Sheet ExcellenceHere is a downloadable fact sheet providing a system overview, images/descriptions of EFI Conversion components, CIS components that will be removed, system features, advantages over CIS, FAQ's and a dyno chart comparing before/after EFI installation on a stock 930 engine.  Restoration  Mechanical overhauls on preservation class type vehicles to full back to body-in-white restorations. Examples online viewed under Cars and Projects page below.  Race Drivetrains    Our speciality, complete powertrain builds in standard and customs configurations for GrandAm, ALMS and all PCA classes along with transmissions and differentials in any configuration  Engine    From 2.0 litre to 3.8 both air and water cooled we have literally built hundreds of engines since 1985.  2.1 litre twin turbo    We have developed reputation for building very powerful and durable small displacement turbo engines. View pictures and descriptions of our 483 hp (@ 1.1bar boost) twin turbo 2.1 litre here.  Race and qualifying results  Running a conservative boost setting of 15psi, this engine's been unbreakable logging 40 hard sprint race hours before a light rebuild. Race results have been impressive, often with overall wins over GT1. Here are just a few of them; Brainard sprint qualifying, Brainard enduro, Carolina sprint qualifying, Carolina sprint race, NoProblemRaceway sprint qualifying and NoProblemRaceway sprint results.  2.61 litre twin turbo    Watch us build a very special 630hp 2.61 litre twin turbo engine for a PWR race car here.  Dyno Run Video  Click here to see and hear our 2.61tt run to 8,500rpm in 3rd, 4th and 5th gears in its 6 speed transmission.  Track Video  Click here to ride in the 2.61tt for two laps of pre-qualifying at Road Atlanta where it went on to finish second overall and garner the much coveted Workers Choice Award.  Transaxle  From standard rebuilds to gear changes, custom shafts/ratios and posi traction. Specialists in complete rebuild/enhancement of RUF 5 speed transaxles.  Dyno testing    From engine dyno to chassis dyno, we verify power, test and tune.  Superflow Autodyn 30 Eddy Current Dyno  We have acquired and installed one of the latest Superlfow Autodyne 30 Eddy Current Dynos combining the best capabilities of both engine and chassis dynos. Read about it and view the installation process within our shop here.  CIS to EFI Conversion  Our EFI conversions are not only for street/DE vehicles, we fit PWR-EFI-II and PWR-EFI-III to race vehicles and sort out/refine other systems fitted to race vehicles we prepare after initial purchase or routinely maintained between race events.  Chassis Prep  Chassis fabricated/built/converted/repaired for PCA and pro use. Select chassis package mod's to support substantially more powerful PWR-EFI/package engine conversions (PWR's 930 RS) and partial cages built/installed for high performance street and DE cars.  Race Consulting  Pre-race consulting, pre-purchase inspections, ongoing race car maintenance programs and trackside counsel (for selected events).  Cars and Projects    A new section of our site, view pictures and full descriptions of various car and component projects we have either completed or have in progress. We currently have 10 online with more to be added.  2.1 litre twin turbo    We have developed reputation for building very powerful and durable small displacement turbo engines. View pictures and descriptions of our 483 hp (@ 1.1bar boost) twin turbo 2.1 litre here.  Race and qualifying results  Running a conservative boost setting of 15psi, this engine's been unbreakable logging 40 hard sprint race hours before a light rebuild. Race results have been impressive, often with overall wins over GT1. Here are just a few of them; Brainard sprint qualifying, Brainard enduro, Carolina sprint qualifying, Carolina sprint race, NoProblemRaceway sprint qualifying and NoProblemRaceway sprint results.  1984 SC RS Factory Rothmans Rally Car  Campaigned in the Middle East then stored since xxx, we completely mechanically restored/enhanced this rare car for organized rallies and street use. Check out its unique features here.  2.61 litre twin turbo GT3R Race Car    Watch us build a very special 630hp 2.61 litre twin turbo race car here.  Dyno Run Video  Click here to see and hear our 2.61tt run to 8,500rpm in 3rd, 4th and 5th gears in its 6 speed transmission.  Track Video  Click here to ride in the 2.61tt for two laps of pre-qualifying at Road Atlanta where it went on to finish second overall and garner the much coveted Workers Choice Award.  PWR RUF CTR Yellowbird Replica  How about a 1984 Carrera built to resemble the lengendary CTR with custom interior and 550hp PWR Package engine with PWR-EFI-1.  1979 PWR 930 Club Sport  A customer's unique request to blend the best of his previous 930's with his factory 1997 993 Club Sport, we built a 2,560lb car with 486whp that does just that..  1964 356 Carrera Panamericana  How about a 1,200 mile dash across Mexico averaging over 90mph in 100 degree heat in a 40 year old 356? That's what this customer wanted and we delivered, no event maintenance required.  1997 Factory 3.8 RSR - 2.1 Twin Turbo Conversion  With 18 event wins in two years of club racing - many of them overall - this owner was looking for new challenges and the oppurtunity to match the performance of the only car to pass him routinely on the track, #134 the 2.61 twin turbo, so it was out with the 3.8 and in with a ground up build of a variation on our 2.61litre twin turbo.  1952 Pre A 356 Cabriolet  A very special car acquired by a long time customer for whom we're restoring the 1,500 911 made (look for a page on this one soon), a former static show car lacking even fluids or lubrication since restoration, we went over this one completely and it's now back on the road.  1973 911T  A stalled restoration, the chassis and a pile of boxes delivered to us from out of state on a flatbed, watch as we restored this car from the ground up to daily use.  1997 993RS Club Sport - Custom Exhaust  Watch as we design, fabricate and test an exhaust system superior to the expensive and now unobtainable factory original, save a few pounds, decibels and pickup more power in the process.  1950 Vincent Red Touring Rapide - Restoration  Here at PWR, we not only like Porsches, but old motorcycles as well, check out our webmaster's groundup restoration of one of these rare classics.  1973 911T - 2.4litre with Single Turbo and PWR-EFI  The ultimate sleeper, a stock appearing brown 1973T with high rev'g/horsepower small turbo engine like our race cars. Not yet finished, here's a pic while on the dyno, check back as we finish the chassis.  Latest News  We update our site often - especially when building a special project and posting pictures of progress. If you are are regular visitor or would like to see our latest site major site update, new service, engine/car project or racing news, check here first.  Site Search  Click here to search our site  General Company Policy  Our general company policy regarding parts we make and/or sell, services we provide and payment requirements.