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Description
Peak & Hold 4A/1A DriverDescription Downloads 4 channel low impedance injectors driver unit. Peak and Hold Manual 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
- 4 channel low impedance injectors driver unit.
- Peak and Hold Manual
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
4.8 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 4
Classy and sporty. Great value!
Color: Grey, Color: Grey
Excellent watch for the price. Looks sporty and dressy. More towards dress watch. Blue is dynamic. Strongly recommend blue for sporty feel. I was thinking of aqua terra. This come close to it with a price less than what i would have paid my state tax for omega aqua terra. My only concern is bracelet which i feel kind of OK. Better bracelet design would have made this watch much superior. 21 lug width is awful. Other than that, nothing to complain.
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Reviewed in the United States on July 13, 2020
★★★★★ 5
Stunning Gentleman's Watch
Color: Grey
This is my second Tissot watch. It's quite stunning in person. The online photos don't do it justice. It has the look and feel of a much more expensive gentleman's watch which makes this purchase a great bargain. Tissot is a great reliable Swiss made watch brand. My first Tissot watch which is probably more than 20 years old still runs great. Very pleased with this purchase.
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Reviewed in the United States on October 16, 2025
★★★★★ 5
Good Tissot Watch
Color: Grey
Arrived on time, in its original box, include a 2 year international warranty, into the box include a book with the Tissot brand history in Switzerland. Algo a second book with a whole catalog of Tissot watches men and women.
The watch looks better when you put in on your wrist. The “naval” blue really gives the clock a classy look. The stainless steel workmanship is really good, the metal is bright and perfectly polished. The metal wristband quality is very good, did not have any problem to adjust the size , I went to my preferred clock workshop for this job, they extracted a few pieces of the band to fit to my small wrist size. Have to get used to the butterfly latch, but after a few days, now I learned to open and close it without any effort. The clock it’s very accurate, I’ve been using my Tissot for near a month and it just increased a few seconds per week. I do the setup and check accuracy with my pc clock. In short, It”s a good value watch, nice, good looking, accurate.
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Reviewed in the United States on August 1, 2021
★★★★★ 5
Great for Graduation/Birthday/retirement/wedding
Color: Extra Large - 3Pcs
Good quality, perfect size to hold a few smaller gifts or 1 large gift. Great price for 3 bags!! Strong handle and love the matte appearance!
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Reviewed in the United States on May 3, 2026
★★★★★ 5
The bags had a weird smell
Color: Extra Large - 3Pcs
Pretty sturdy and spacious, my son's size 7 big kids, fits perfectly in the bag. 3 bag with tissue paper. I love it!
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Reviewed in the United States on June 4, 2026