I've been seeing and tuning a lot more of these lately, unfortunately.
If you're on a budget and thinking of purchasing from SmartFire - DON'T.
If you have SmartFire products and can't figure out why your engine is still running like trash even if you tuned it, here's why.

The "4 bar" MAP sensor they sell actually reads 3.1 bar at 5v and uses a 613 scalar / 42 offset. The only one I've tuned of these ended up failing after a month and read a solid 5v. Replaced it with an OEM MAP for testing, ran fine. All things considered, 5v is a safer fail than 0v.

I've found an 11% flow variation from one injector to another, right out of the box.
I've had a few clients buy these and one - or all of them - fail right out of the box. Either stuck open, stuck closed, or they spray like they're peeing after sex.

The dead time even on saturated injectors is massive, so the flow rate is NEVER as advertised. Often times, if you can get them to run, you can call which bearing you'll spin first just by pulling the spark plugs and finding a noticeably lean one.

A recent set I found on a GSR claimed to flow at 850cc, charted at 795, 770, 764, and 748. He couldn't get it to stop knocking unless it was pig rich (obviously).
I'd say the failure rate that I've experienced is close to 30%.

If that's a risk you're willing to take to cut a few corners... you don't deserve that engine anyway.

That's my rant for the day.

 

I didn't realize people were still even buying these things. They have been around for a few years now. They make them so cheap they can afford to replace them with their BS warranty and still make money. Do people still not know Google exists and all you have to do is type in "Product XYZ Review" and read up on whatever you want to purchase? Nothing but horror stories on SmartFire from shitty running to blown engines (fail open and closed).

Long story short - Save up for "real" injectors or find some used ones for whatever size you may need.

 

I have never heard of them. I guess their press releases don't get delivered under my rock.
Who's injectors are they (before they're modified)? Bosch? Siemens? Keihin? China?

 

Definitely Bosch. I think they might just be ported DSM injectors, they fit the same. But they're total garbage. They need to go out of business, they're an insult to import tuning.

 

Thank you for all you do for the community.

 

Its not just smart fire, its all the chinese sensors that are omni power knock offs.
Hondata or Omnipower are the only sensors I know for a fact are USA made & come with a 2 year warranty.

 

I have had two customers bring me a car to tune with a brand new set of SmartFire injectors in hand ready to install. Both sets each had one injector that failed to function right out of the box... leaving the car running on three cylinders. I sold both customers a quality set of replacement fuel injectors and the tuning sessions continued without incident.

So my experience is ZERO for two... that's FAIL in my book. I would not recommend them to anyone.

 

Just for reference material ONLY:

High performance Fuel Injectors | 42lb to 2000cc, 1000cc, 440cc, 650cc, 850cc Performance Injector

 

Nice comparo John....I know most here would never consider a Chinese MAP however in another thread we all were talking about the newer generation of kids that lack fundamental know-how and whom tend to buy things on the cheap and so when things break they don't feel bad since they bought it cheap....