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Description
Peak & Hold 8A/2A 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 8A/2A
- 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
4.5 ★★★★★
Based on 1919 reviews
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Product Reviews
★★★★★ 5
Cute and comfortable
Size: Medium, Color: Dark Colors
Super cute and comfortable.
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Reviewed in the United States on March 10, 2026
★★★★★ 3
Updated 7/25
Size: XX-Large, Color: Dark Colors
Not too long, not too short in the bum where you have a wedgie allll day long.
I've tried soooooo many brands (Amazon probably hates my guts) but I've been searching for months to find some long enough to go over that crease between your thigh and groin. Mine gets soooooo sweaty and then itchy so I needed something to cover and absorb.
The larger recommended size settled into my stomach/belly button area and makes it looks like I have the hugest fupa ever!
I
But like several reviewers before me mentioned-you might as well toss the grey pair. Its like 1-2 sizes too small. Just the grey one! ALWAYS! So I knew to try it on so I wasn't shocked later!
Wish they had and all black set (hint, hint), without that weird, bad fitting grey pair. Just get rid of that one!
Update 1: they do run big.
And yes, liners/pads DO stick. Thank goodness.
Update 2: bought 2 sizes smaller than Amazon recommended. Tight when tried on, much better after washing. Very stretchy.
Now it's wedgie problem. All day, all the time wedgie. Not good.
No one gets that women have butt's that are bigger than the front. So yes, it goes just below my belly button, but the backside barely reaches to the bottom on my tail bone/start of the booty crack.
So now my search moves to men's boxer briefs....
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Reviewed in the United States on June 25, 2024
★★★★★ 5
Love
Size: X-Large, Color: Black
My favorite! They are so comfy I’ve bought 2 times
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Reviewed in the United States on March 9, 2026
★★★★★ 2
Six seams come together between your vag and rear exit. Not good.
I thought these were cute and liked the colors. They were on sale. I was looking for regular cotton boy shorts for women. I am very petite. For some reason it has become very difficult to find regular cotton boy shorts that have a gusset and the elastic band is covered. I do mean that I was just looking for basic cotton slip shorts that I have bought within the last year that have a covered waistband because I get irritation from elastic. Because of the weird data silos that Walmart and other retailers are now using, my purchase history will not pull up underwear purchases in the last year so that I may be able to reorder the ones I liked. I am so frustrated by this but needed to buy more underwear. I saw that the elastic was not covered but thought I'd try them anyway at the sale price because this elastic band is the type that can be folded over if irritation occurs. However, this is the worst fit of underwear I've put on in a while. They are made for a woman with large thighs or rear. There is a gap at the leg holes giving the feeling of breeze/no security at the butt and there is nothing, no tension there, to stop these underwear from going right up and what makes it worse is they must have made these for a woman with orifices right at the front of her pelvis. When you look straight down into the underwear you will see where the crotch gusset ends and the back seam begins. It is straight down! In other words the gusset ends and the left to right leg seam plus the seam going to the back ALL meet at this intersection which is right on top of my back door opening. This problem plus the fact that the leg holes are too big and nothing is holding the underwear down snug around my thighs means the most uncomfortable underwear seam JUNCTION is also going to be riding up my backside. I hate them. Cute colors but these underwear are not for people like myself who I thought was pretty normal despite being petite. I just hate them and I find it really frustrating that I'm going to have to end up sewing my own underwear, which is is a very basic style of underwear, not because they are no longer being made but because Google searches and Amazon searches are so confabulated and leveraged that I can't find them no matter how hard I try. I'm sick of this. I'm absolutely sick of this and UNDERWEAR IS IMPORTANT. I give two stars because they colors are really cute but I hate them and need to put an extra gusset in and try to take up the leg holes.
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Reviewed in the United States on March 12, 2025
★★★★★ 5
comfy
Size: Large, Color: Organic Cotton 2 (5 Black)
I really like these organic cotton undies. they fit well and are very comfortable.
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Reviewed in the United States on March 18, 2026