Sinister Performance, LLC.

Custom Chip/PCM Reprogramming

For GM Cars and Trucks

 

We are dedicated to tuning your vehicle's computer to attain maximum performance and drivability.  We don't only focus on Wide Open Throttle performance, we also focus on all aspects of drivability aimed at making your driving experience more pleasant and rewarding.  While we specialize in programming for vehicles featuring engine swaps, we also have a lot to offer for those stock vehicles with just the most basic bolt-ons to complete high performance build-ups.  Mild to wild, practical to radical, we will do our best to get it running right.

 

We currently offer "normal" support for the following platforms:

GM Truck Systems

bullet 1991-93 GMC Syclone / Typhoon 4.3L V6 Turbo
bullet 1986-95 most GM Trucks & Vans using Fuel-Injected Gasoline V6 & V8 engines (restrictions apply)
bullet 1996-up Most FWD GM Minivans with the 3400 V6 engine
bullet 1996-2002 all GM Trucks & Vans using Gasoline 4.3 V6 & 5.0, 5.7, 7.4 V8 engines; OBD2
bullet 1999-2005 all GM Trucks & Vans using Gasoline 4.3 V6 & 4.8, 5.3, 6.0, 8.1 V8 engines; OBD2
bullet 2006 most GM Trucks and Vans using Gasoline 4.3 V6; 4.8, 5.3, 6.0 V8 engines; OBD2 non-CAN protocol

 

GM Rear Wheel Drive Car Systems

bullet 1986-87 Buick Grand National, T-Type, and Regal Limited 3.8L Turbocharged
bullet 1989 Pontiac Trans Am 3.8L Turbocharged
bullet 1986-89 5.0, 5.7L TPI V8 Camaro / Firebird / Corvette
bullet 1990-91 5.7L TPI V8 Corvette
bullet 1990-92 5.0, 5.7L TPI V8 Camaro / Firebird
bullet 1993 5.7L MFI LT1 Camaro / Firebird
bullet 1994-95 4.3L & 5.7L LT1 Camaro / Firebird / Corvette / GM B-car FLASH PCM OBD-1
bullet 1996-97 4.3L & 5.7L LT1 Camaro / Firebird / Corvette / GM B-car OBD-2
bullet 1997-2002 5.7L LS1 Camaro / Firebird / Corvette OBD-2
bullet 1996-2002 3800 Camaro / Firebird OBD-2
bullet 2003-2004 5.7L LS1 Corvette / GTO OBD-2

 

GM FRONT Wheel Drive Car Systems (including Fiero) - 1996 FWD V6 Car Support is here! (see below)

bullet 1985-88 Pontiac Fiero 2.8L MFI V6 (n/a only)
bullet 1987-88 Pontiac Fiero 2.5L TBI 4cyl
bullet 1987-93 2.8L & 3.1 V6 MFI Car
bullet 1990-91 Pontiac Grand Prix 3.1L Turbocharged
bullet 1991-95 3.4L TDC / DOHC V6
bullet 1988-95 3800 V6 vin C & vin L (cars and vans)
bullet 1992-95 3800 Series 1 Supercharged (cars)
bullet 1994-95 Buick Century & Oldsmobile Cutlass Ciera 3100 V6 SFI
bullet 1995 GM FWD Cars using the L36 3800 Series II V6 OBD1
bullet 1996-2003 Buick Regal, Riviera, Park Avenue, LeSabre, & Century - 3100, 3800 (L36), 3800 SC (L67)  OBD-2
bullet 1996-2003 Chevy Lumina, Malibu, Impala, & Monte Carlo - 3100, 3400, 3800 (L36)  OBD-2
bullet 1996-2003 Oldsmobile Achieva, Alero, Cutlass, Intrigue, Eighty-Eight, & Ninety-Eight - 3100, 3400, 3.4 DOHC, 3.5 DOHC, 3800 (L36), & 3800 SC (L67)  OBD-2
bullet 1996-2003 Pontiac Grand Am, Grand Prix, Bonneville - 3100, 3400, 3800 (L36), & 3800 SC (L67)  OBD-2
bullet 2004-2005 Most GM FWD Cars w/ V6 engines -- email with your specific application and we'll let you know if we have normal support  for it

 

NEW! Tuning Support for GM MEFI controllers (sold with popular RamJet crate motors and Marine engines)

bullet MEFI-1 Controller part numbers: 16159919, 16189069, 16220371, 16234539
bullet MEFI-2 Controller part number: 16210729
bullet MEFI-3 Controller part numbers: 16237009, 16237019, 16236999, 12489488, 12489493
bullet MEFI-4 Controller part number: 12569494
bullet MEFI-4a Controller part numbers: 12575479, 88962717, 88962718
bullet MEFI-4b Controller part number: 12584052

 

Special Applications

bullet Reprogram the 1227730 ECM (90-92 F-body 3.1) for use in a stock Fiero 2.8 application¹ (ideal for Fiero 2.8 owners who wish to eliminate the "buggy" engine operation most of these cars suffer from)
bullet Reprogram the 88-91 3800 OBD-1 ECM for use with the 3800 Series 1 SC or Series 2 SC engine (ideal for Reatta, Riviera, & Toronado/Trofeo owners who want a more powerful engine but don't want to loose the functionality of their factory on-board computers and information systems)
bullet Reprogram the 92-93 3800 OBD-1 PCM for use with the 3800 Series 2 Supercharged engine
bullet Reprogram the 94-95 3800 OBD-1 PCM (see PCM types) for use with the 3800 Series 2 Supercharged engine
bullet Reprogram the 98-01 3800 OBD-2 PCM for use in engine swaps into older vehicles²
bullet Reprogram the 98-01 3100/3400 OBD-2 PCM for use in engine swaps into older vehicles²
bullet Reprogram almost any ECM/PCM I support for use in another vehicle or application for which it was intended²
bullet Don't see your vehicle listed above?  Email us to see if we can still tune your computer (GM makes only)

¹Will not work with the stock Fiero 2.8 EGR system.  Requires EGR adapter plate so a digital EGR valve can be used.

²Restrictions apply.  Ask for details.

Other applications may be available, please email us with your specific needs.

All custom chips and PCM reprogrammings come with a 1-year warranty!  This includes tweaks and adjustments to the custom programming.  Restrictions Apply.

NOTICE: NEW PRICING STRUCTURE COMING IN FALL 2008 FOR ALL APPLICATIONS

Pricing

-OBD1 Systems-

Custom Chip / MEM-CAL Reprogramming Service....................$55.00

Custom Chip w/ Mem-Cal Adapter option...................................$99.00 (see NOTE below)

NEW! Multi-Program, Driver Selectable "Thumbwheel" chips....$varies depending on application, ask for details

Blank / Drop-In Replacement EPROM chips..............................$7.00 ea (restrictions apply, see NOTE below)

Custom .bin file emailed to you (you program onto your own chip)....$50.00

OBD-1 LT1 Flash PCM reprogramming.....................................$69.00

GM MEFI Controller reprogramming..........................................$varies depending on application, ask for details

 

-OBD2 Systems-

Supported OBD-2 PCM reprogramming.....................................$85.00

Unsupported GM OBD-2 PCM reprogramming..........................$varies depending on application details here

 

-Other Options-

Expedited Order Processing.......................................................$20.00 extra (same or next day turn-around; depending on time received; PAYPAL ONLY)

In-person Tuning, Diagnosis, and Dyno Time............................click here for more info

 

NEW SHIPPING POLICY: PLEASE READ HERE

 

TO USA ADDRESSES

Shipping:  All orders shipping via USPS First Class Mail and Parcel Post will only ship out once per week; usually on Monday or Friday, depending on when orders are received.  I strongly encourage the optional upgrade to USPS Priority Mail (if applicable) if you desire quicker return shipping service.  Exceptions may be made for special circumstances.  Orders using Priority or Express shipping options will still be sent on the day they are ready to ship.  Shipping prices applicable to continental United States addresses ONLY.  CANADA, International, and off-shore shipping costs extra - ask for details.

NOTE:  The mem-cal adapter is a device that plugs into the computer between it and the factory mem-cal/chip on most 1986-95 applications.  This adapter accepts individual EPROM chips we can ship you which can be installed by the end user without requiring you to ship us a mem-cal to be reprogrammed.  Use of this device can save money and downtime when extensive tuning is required.  This adapter must be purchased thru a 3rd party and may not work in all applications.  One EPROM chip will be included with the mem-cal adapter purchase.  Additional EPROM chips cost $7 ea, but this amount will be refunded to you when you return undamaged, unused EPROM chips.  Other restrictions may apply to your specific application, ask for details.

Retune Policy:  If any significant part of the engine or powertrain is changed that requires extensive re-working of the tune; then that retune will NOT be covered under the 1-year tuning support program I offer.  An example of this would be if you decide to install a turbocharger after you had the chip made for a naturally aspirated application.  Instead, you will be charged 1/2 price of the regular tuning cost for such a retune; but then the full 1-year of support will be reinstated from that point.  Retunes for insignificant changes/upgrades will still be free--covered under the 1-year of support I currently offer.

In addition, a PCM exchange program option might be available for some LT1-flash and OBD-2 platforms; email for info.  (This exchange program is helpful if you can't afford any vehicle down-time.  A core charge or other costs may apply.  Limited availability.)

 

Accepted Payment Methods

 

SUMMER HOURS OF OPERATION:

OPEN Monday-Thursday; CLOSED Friday-Sunday; and all holidays.

Any orders or correspondence received on days we are closed may not be processed until the next day we are open for business.

 

please choose a selection below to continue

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If you would like us to provide you with our tuning service, please click here to continue.
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If you would like to learn how to do your own reprogramming, click here.

 

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9-02-08