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Description
PEAK & HOLD 4A/1A DRIVERFEATURES Current control driver for low impedance injectors 4 channels Available in three current versions: 8A 2A 4A 1A 2A 0. 5A TECHNICAL DESCRIPTION Peak and Hold 8A 2A Controls up to 4 injectors with impedance below 1. 5 ohm 16 Bosch 160lb h (1600cc) injectors (4 per channel) 8 Siemens low impedance injectors (2 per channel) 4 MSD low impedance injectors (2 per channel) (with 2 ohms impedance per injector) Peak and Hold 4A 1A Controls up to 4
FEATURES
- Current control driver for low impedance injectors
- 4 channels
- Available in three current versions:
8A/2A
4A/1A
2A/0.5A
TECHNICAL DESCRIPTION
Peak and Hold 8A/2A
- Controls up to 4 injectors with impedance below 1.5 ohm
- 16 Bosch 160lb/h (1600cc) injectors (4 per channel)
- 8 Siemens low impedance injectors (2 per channel)
- 4 MSD low impedance injectors (2 per channel) (with 2 ohms impedance per injector)
- Controls up to 4 injectors with 1.5 to 3 ohms of impedance
- 8 Bosch 160lb/h (1600cc) injectors (2 per channel)
- 4 Siemens 83lb/h injectors
- 4 MSD injectors (with 2 ohms impedance per injector)
- Controls up to 4 injectors with 3 to 7 ohms of impedance
- 4 Bosch 160lb/h (1600cc) injectors
Dimensions: 115 x 90 x 33mm
TO DETERMINE WHICH PEAK & HOLD YOU NEED
- Grab a multi-meter and select Ohms 200
- Touch the positive and negative leads of multi-meter together to measure resistance (record this number...i.e. measured 0.3)
- Then take the positive and negative leads from multi-meter and put on each terminal of the injector. Doesn't matter the order. Record this measurement
- Take the ohms measurement from Step 3 and then subtract the number you got in Step 2 (i.e. Step 3 4.8ohms - Step 2 0.3ohms = Total 4.5ohms)
High Impedance Injectors - Above 7ohms - No Peak and Hold Boxes are needed.
Peak and Hold 2A - 3ohms to 7ohms (Bosch 160lb/hr).
Peak and Hold 4A - Below 3ohms to 1.5ohms.
Peak and Hold 8A - Below 1.5ohms (Billet Atomizer*).
All low impedance Billet Atomizer Injectors manufactured after Nov. 2012 require 8A regardless of measured resistance.
*Billet Atomizer Injectors - Anything prior to serial # C300**** should only use the 4A/1A. This only applies to injectors manufactured prior to Nov. 2012.
CONTENTS OF PACKAGING
- 1 Peak and Hold 4A/1A
- 1 Operation and installation guide
- 1 mounting kit (4 rubber mounts, 4 washers and 4 ¼” nuts)
- 6ft Peak and Hold unterminated harness (optional)
- 1 FuelTech black carbon fiber sticker
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 4
Mostly fine replacement parts
Color: Omni S1 Pro 17P
I can't get either of the rolling mops to snap into place no matter what i do, might have to tack on something so they stay in place. The main brush was a fine fit, but the side brushes seems more flat than the stock ones and it makes some weird noise now, they did snap on though. Filter was fine though and I haven't tried a dust bag yet, still good value even if I can't get the mops to fit for me!
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Reviewed in the United States on December 6, 2025
★★★★★ 5
Good quality overall
Color: Omni S1 Pro 17P
Good kit I ordered for my S1 Pro. All of the accessories seem to be of good quality and have held up well over time. Order without hesitation.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
It works
Color: Omni S1 Pro 17P
Is compatible with my vacuum and had no issues
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Reviewed in the United States on September 24, 2025
★★★★★ 5
Compatible
Color: Omni S1 Pro 17P
Parts work perfectly
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Reviewed in the United States on August 16, 2025
★★★★★ 5
Exactly what I wanted
This robo-vac works great! Most of the well known products in this category are full of crap that you don't need, or is even spying on you. I'm sorry, but my appliances don't need WIFI, camera's, mapping features and an internet connection to send them to... who??? This unit has everything you need and nothing you don't. I bought it because my dog is shedding like crazy and leaving my floor looking like it needs a haircut. The Eufy has done a great job of picking up ALL of the dog hair, dirt and small particles, and has yet to become clogged. The floor it is cleaning is a linoleum floor that has a low pile rug and it cleans both very well. The Eufy runs for well over an hour and one of the best things about it.... it is VERY quiet. Emptying the dust bin is super easy, and cleaning the filters is very easy as well. The Eufy comes with extra side brushes and an extra roller. I have not had to change any of them yet, but maintenance and cleaning of these items has been made very easy as well. It comes with a well thought out cleaning tool that makes cleaning easy. It has a cutter on it, similar to an envelope opener, that gets under hair that wraps around the roller and and slices it off. This is a problem with ANY vacuum that has a roller, and this tool works very well for this. To be honest, I wasn't sure what to expect at the price point, but the Eufy works better than the older I-robot I had some time ago and is far easier to maintain. The very first time it ran it was learning the room and did not make it back to the dock, but every use since, it has always gotten back and docked. If you want a robot vac that you can start with a remote or program a schedule in, without WIFI, camera's, and yet another app to install on your phone, I highly recommend the Eufy... you won't be disappointed.
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Reviewed in the United States on July 22, 2023