When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Being direct is a good thing when it comes to injection. Here are the things about a direct injection system that you may not have known and why it’s so good. Check it out inside.
I wouldn't gloss over the cons as suggested by the article. The carbon issue is real and, in terms of long term durability, the benefits don't outweigh such until the system is improved to deal with this issue IMO. For now, this is a significant flaw. There is also the matter of increased complexity overall, which is not usually a friend to the enthusiast who wishes to modify.
I wouldn't gloss over the cons as suggested by the article. The carbon issue is real and, in terms of long term durability, the benefits don't outweigh such until the system is improved to deal with this issue IMO. For now, this is a significant flaw. There is also the matter of increased complexity overall, which is not usually a friend to the enthusiast who wishes to modify.
I own a Mazdaspeed 3. This is the only direct injected vehicle I have owned. I have around 125,000 miles on it. Mechanically, this car is superb. I am terrified, however, to see what the intake valves look like and the car has been idling a little rough lately. Add a poor PCV system to a direct injected vehicle, I have seen these look like they are almost completely clogged after around 40,000 miles and it usually requires walnut blasting to clean them out. I am hoping mine may be cleaner since I do use the right foot method of cleaning it out routinely, but I'll bet it's still pretty nasty in there.
I believe some of the answer to DI may lay in using both port and direct injection, such as the second generation Ford EcoBoost engines. I can't imagine that C7 Corvette's are going to need walnut blasting every 20k to 40k miles, let alone all the GEN V V8's in their trucks and SUV's. The engine features an all-new, Ford-first dual-direct and port fuel-injection system. Two injectors per cylinder – one mounted in the intake port where air enters the cylinder and one positioned inside the cylinder – work together to improve power output, efficiency, and emissions. https://media.ford.com/content/fordm...ter-boost.html
10-09-2017, 10:59 AM
The Benefits of Direct Injection 
