For my E30 325i, the biggest performance I gained from cleaning the injectors. When I bought the car I drove it 2000 miles around Europe and noticed sluggish drive in speeds under 100km/h.

Pulled the injectors out and it had what looked like decade full of gunk. Spray pattern non existing. Just weeped fuel through the gunk. Gave them ultrasonic bath and rebuilt them. Car now feels very responsive in city driving and accelerates nicely in highways.

Pros: responsive driving, nice acceleration

Cons: sluggish drive

Vehicle: BMW

Mileage: 3218 km

OEM Chevrolet › Fuel injector

GoStumpy 15 Jul 2016, 04:30

Rating 4.0

Smell:

Had one for work with a fuel card so never noticed economy that much.. LOVED the Van though!! Ours was RWD, fully optioned without leather. Bought it with 250k KM in 2007, sold it in ~2011 with 400k, and then I bought it back in 2014 with 443k KM... replaced the transmission at ~330k KM, other than that nothing ever went wrong.. until the end when I think the fuel injectors were leaking because it would always be flooded when starting cold.

Pros: LOVED the Van

Cons: fuel injectors leaking

Vehicle: Chevrolet Astro

Mileage: 330000 km

OEM Volkswagen › Fuel injector

Robert~NRW 11 Apr 2014, 19:35

Rating 5.0

Idle:
Acceleration:

It was the fuel injector #2. The repair was covered under the warranty extension issued by VW last year.

Pros: repair covered by warranty

Vehicle: Volkswagen Tiguan

Bosch › Fuel injector

djnibler 20 Dec 2013, 02:38

Rating 5.0

I found a great deal on a set of new Bosch OEM fuel injectors on eBay. All 5 for only $200 shipped free. I put them in today. Took maybe an hour at the most.

Pros: great deal

Vehicle: Volkswagen

OEM Volkswagen › Fuel injector

NwarDez 5 Dec 2013, 00:33

Rating 5.0

Good news. I had my 4 injectors replaced at 18K and my intake manifold replaced at 26K.

Pros: injectors replaced, intake manifold replaced

Mileage: 18000 km

OEM Volkswagen › Fuel injector

Atomicevil 17 Sep 2019, 16:45

Rating 3.0

Idle:
Acceleration:

I have a 2018 Tiguan and it started having the same issues every so often, then suddenly on the highway it went into limp mode restricting the engine to 4K rpm... turns out two cylinders weren\u2019t receiving fuel so those two injectors had to be swapped... under warranty thankfully!

Pros: under warranty

Cons: limp mode, fuel issue

Vehicle: Volkswagen Tiguan

OEM Volkswagen › Fuel injector

m3456y 12 Jun 2017, 12:16

Rating 3.0

Acceleration:

I pulled the fuel injector rail and reconnected everything outside of the engine and found 2 of the reconditioned injectors were not firing even when switched with working ones.

Pros: reconditioned injectors not firing

Vehicle: Volkswagen

Mileage: 23000 km

OEM Honda › Fuel injector

Trick_Aioli7811 20 Jan 2024, 22:09

Rating 1.0

Idle:
Acceleration:
Smell:

First, my fuel injectors went, $2500 repair. Took 1 month since the part was on backorder. After getting the car back, 2 weeks passed, and then a blown head gasket, $3800 repair.

Cons: expensive repair, long backorder

OEM Honda › Fuel injector

jyu2848 17 Jan 2024, 02:53

Rating 0.5

Idle:
Acceleration:

I am driving 2018 Odyssey and had EXACT SAME PROBLEMS caused by Fuel Injectors. It was So annoying and pain in my butt to take care. Seems like all of their product lines are infected. It Will be my Last car from Honda, Period. No more Honda P.O.S ever in my life.

Cons: annoying, pain to care, product lines infected

Vehicle: Honda Odyssey

OEM Audi › Fuel injector

LinkOfHylia123 19 Oct 2023, 15:28

Rating 2.0

Smell:

I bought a brand new Q3 in 2019, didn’t use it that much only 15k on the clock with regular servicing until a few weeks ago I had two fuel injectors rupture which was pretty disappointing.

Pros: comfortable to drive

Cons: fuel injectors rupture

Vehicle: Audi Q3

Mileage: 15000 km