May 12 2025
Holley MEMORIAL DAY SALE is ON!
May 12th through June 8th
May 9 2025
Holley finally released a typical sensor KIT under one part number.
Part # 554-202
Holley also announced a Bluetooth Module for the Terminator-X Family.
(You must be at Version 3 or later)
Part # 558-483
Click HERE to see both products
April 11 2025
Congrats to Herk who beats a dragster and wins Super-Pro at Famoso.
He's running a Holley HP ECU on E85 that I tuned, and this car is fast.
March 17 2025
Special Holley Promotional pricing that they called:
Holley's IRS Tax Sale
Ended on 3/16 2025
This site shows the new prices
January 5 2025
Holley Sniper 1 and Sniper 2 sections have been updated.
The significant part is that we have decoded the Sniper-2 part number scheme for you. Click HERE
November 18 2024
Holley prices are the same just about everywhere you go, but people buy from us
because we answer the phone, make sure you buy what you need and then we support you
with Training and Tuning.
July 28 2024
Congrats to Jim Grossi for winning in Super Stock at the NHRA DENSO Sonoma Nationals.
Outstanding driving and the car performed as expected.
Jim's reaction time was .004
And the car ran an 8.50 on Jim's predicted 8.50 ET.
That's almost a perfect run!
I tuned this car on a chassis dyno earlier this year.
Sniper-2 Products ave been added to this site - and
Holley FINALLY Ships the Sniper-2 Laptop Cable
October 22 2023
A professional tuner MUST USE a laptop to USB cable, but when Holley brought out the Sniper-2, they did not have the cable ready. Very frustrating for our customers who need a tune. Well, they just announced the 558-495 Laptop cable for the Sniper-2.
Clicking HERE will bring you to the product page with pricing.
Holley Announces Sniper 1 to Sniper 2 Upgrade Kits:
October 5 2023
Want to upgrade your original Sniper 1 to a Sniper 2 and don't want to rewire? The Sniper 2 upgrade kits are designed to be a Plug and Play upgrade that connects your existing Sniper 1 wiring harness. Simply remove your Sniper 1 throttle body, unplug the connectors, install the Sniper 2 throttle body, and plug the Sniper 2 adapter harness into your existing main harness. Cycle your ignition key, run a fresh wizard. Kits with regulators are designed to help with the upgrade.
There are four kits. Shiny and Black, with or without the fuel regulator.
550-510-3AX Shiny, no regulator
550-511-3AX Black, no regulator
550-510-3AE Shiny, with regulator
550-511-3AE Black, with regulator
These items have been added to this site along with the new Sniper 2 items.
Click HERE
HOLLEY EFI Updates
July 19 2023
Holley comes out with the NEW Sniper 2 (finally) and several software fixes (also finally).
Here's a summary:
Click here for Holley Sniper 2 Video
Main Features
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(NEW) Next generation ECU features improved RFI noise suppression.
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(NEW) Throttle shaft design. Plates don’t stick.
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(NEW) Main harness includes plug-and-play HyperSpark distributor support.
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(NEW) 3.5-inch Handheld, 5-inch Digital Dash, or the Bluetooth dongle for your cell phone
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(NEW) Optional Power Distribution Module (PDM) further simplifies wiring.
Additional Features
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(NEW) Integrated transmission kick down for GM TH350/400, 200-4R/700R4 and Ford C4/C6.
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(NEW) “Hidden Harness” exits from the rear of throttle body for a clean appearance
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(NEW) I/O consist of: 2x Ground Inputs, 2x Ground Outputs, 1x TPS output (0-5v), and 1x Tach Output .
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(NEW) Redesigned injector connectors for improved reliability
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(NEW) Onboard contactless magnetic TPS sensor ensures an accurate TPS reading
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(NEW) Mil-spec style M8 positive lock connector for CAN1 and CAN2.
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(NEW) Cast-in fuel crossover from the primary to secondary fuel rail.
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(NEW) Sniper 2 throttle bodies are serialized in house, which provides each unit a birth certificate for an improved customer service and warranty experience in the event of any unit needing to be inspected
Holley took everything that they learned from the original Sniper EFI system and added 14 new features and fixed some well-known issues.
Holley Price Increase (July 2023)
This seems to be a common occurrence. Over the last two years Holley has increased their prices almost every quarter. Well - some prices have gone up again. All the prices have been updated on this website. The good news is many of the EFI kits did not go up, and those that did were relatively small increases.
Should you hire a professional tuner?
Sniper and Terminator-X people: The quick answer is YES!
Regardless of the system you buy (yes, even Snipers), it should be tuned by an experienced professional. You should consider the "Wizard" tune good enough to start the engine and check for leaks. Then hire a professional to optimize your tune for your combination. After that, you use the handheld as a dash but not for tuning.
Holley Releases New Software (July 19 2023):
The latest HP and Dominator software is V6 Build 310, and for the Terminator-X it's V3 Build 110. Both releases offer significant improvements, but based on our initial testing and Internet feedback, they may not be stable yet. Click HERE to go to the Holley Tech page.
Rich Pinoski came close in Super Stock at NHRA Sonoma Raceway
July 2023
He runs a Holley Dominator
Fun and success at the track this weekend:
Steve Keefer's EBMC LSX Nova that I tune (its picture is at the bottom of all these pages) ran a mid 4 second 1/8 mile and a high 6 second quarter mile. This car is not built for the A-Gas class where the index is 7.60, so he was a little fast (LOL) but we were just testing anyway.
Herk Usrey is new to EFI, and on only his second time out with his car running an HP ECU he figured out his chassis setup and started to win. Herk won the event in Super-Pro and also won his first NHRA WALLY. Big congratulations to Herk.
New Book
My high-tech thriller ENCODED is getting good reviews. Amazon has it, and it has also been released in electronic formats such as Kindle. Read it, and post a review on the Amazon site. Click HERE to go to the Amazon link.
Click HERE to see a video
