Motorbreath by Pisces Genetics

Motorbreath strain photo
Type mostly indicaFlower ±68 daysTHC 23.47%Cross Chemdog × SFV OG

Jimmy Nitz over at Pisces Genetics struck absolute gold when he crossed a classic Chemdog with SFV OG Kush to create Motorbreath in the early 2010s. But the real legend isn’t just the seed line itself—it’s the pheno hunt. The infamous #15 cut (MB15) was hunted down by Sticky Icky OG, and it quickly became one of the most sought-after clone-only varieties in the California scene. This isn't some sweet, fruity dessert weed. It's straight, unapologetic gas.

When you crack a jar of true Motorbreath, you're hit with a gnarly wave of diesel fuel, chemical funk, and sharp garlic earthiness. It stinks up the whole block. On the inhale, it coats your mouth in that heavy, acrid fuel flavor that old-school heads are constantly chasing. The high is no joke either—it hits you with a massive cerebral rush right out the gate before slamming into a heavy, narcotic Indica body stone that’s notorious for putting veteran smokers straight to bed.

Growing the real #15 cut takes some patience. She usually needs about 68 days in flower to really swell up and produce that greasy, resin-soaked finish. These days, the forums are full of warnings about knock-offs and bagseed crosses being passed off as the real deal, especially since the market is flooded with watered-down Cookies crosses trying to ride the Motorbreath name. If you ever manage to secure the authentic MB15 clone, you hold onto it for life, because it’s a masterclass in raw, fuel-driven potency.

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BreederPisces Genetics
Typemostly indica
Flowering time±68 days
THC23.47%
CBD0.06%
EnvironmentOutdoors
LineageChemdog × SFV OG
DescendantsDeath Rattle, Nitro Fumez, Jimi, Dubble Motorboat, Dubb Breath, Motor Boat, Living Nature, Los Muertos, Dungeons Vault Genetics - Hot Rod, Mo Lune Day, 4th Gear, Zelatti, Pie Caramba, Vapor Lock, Tiger Queen, 7th Heaven, Motor Grease

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🧬 Explore the family: Chemdog · SFV OG · Death Rattle · Nitro Fumez · Jimi · Dubble Motorboat · Dubb Breath · Motor Boat · Living Nature · Los Muertos

Ancestry Pedigree

Chemdog
Unknown or Legendary
Indica Sativa
Original Strains
SFV OG
Clone Only Strains
OG Kush
Clone Only Strains
Unknown Strain
Original Strains
Hindu Kush Indica
Original Strains

Growing Motorbreath: what to expect

As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with Chemdog or SFV OG will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.

Motorbreath FAQ

How long does Motorbreath take to flower?

Motorbreath typically flowers in around 68 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Motorbreath an indica or a sativa?

Motorbreath is listed as mostly indica.

What are the parents of Motorbreath?

Motorbreath was bred from Chemdog × SFV OG by Pisces Genetics.

How strong is Motorbreath?

Reported THC for Motorbreath is 23.47% and CBD 0.06%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.

What environment does Motorbreath like?

Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.

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Facts compiled from public breeder listings. Growing Motorbreath? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.

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Published by Cultivar (logmygrow.com), a structured grow journal. These reference bands are the same ones the app grades real grows against. Free to cite with a link. Some outbound product links are affiliate links — see disclosures.