Toyota engineers designed this engine to go 500k+, they obviously went conservative on the tune. Maybe some would trade some of that mileage on the back end for better performance now.
My experience with 12 hole injectors. Awesome! (3 Viewers)
- Thread starter TLC Dan
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This is such a classic bad attitude that you are exhibiting right here. This entire website is built around modifying our Toyota vehicles in every conceivable way. You just have a bad attitude. That's plainly obvious for everyone to see. This is especially entertaining to be written by forums member @roma042987, because he claimed to have worked in a "tuner shop." If that were true then he would have seen fuel injector swaps on vehicles 100 times a day. But it's not true or he's a liar or arguing in bad faith. Or maybe they just tuned carbureted cars there...
No problem, I will. Just a reminder if you want to donate money to the dyno session please PM me.
This is such a classic bad attitude that you are exhibiting right here. This entire website is built around modifying our Toyota vehicles in every conceivable way. You just have a bad attitude. That's plainly obvious for everyone to see. This is especially entertaining to be written by forums member @roma042987, because he claimed to have worked in a "tuner shop." If that were true then he would have seen fuel injector swaps on vehicles 100 times a day. But it's not true or he's a liar or arguing in bad faith. Or maybe they just tuned carbureted cars there...
No problem, I will. Just a reminder if you want to donate money to the dyno session please PM me.
I don’t have a bad attitude I’m just skeptical of these extravagant statements or claims which don’t really add up to someone who has a lot of experience in this sort of thing. I’m not here to prove anything so if you want to call me a liar when it comes to my experience with this stuff than go ahead. I’ve made tons of friends on mud all over this country and others and will not tarnish my image by being ugly on here. I’m not going to post anything more in this thread since my insight offends you.
is this jeep/vette/raptor forum? come on guys keep it together... :<)
No, there would be more incoherent rambling, crayon eating, and questions like "why do people their flash brights at me?"
Just ordered a set of 250CC’s without adapters from Keith at Dirty Deeds Industries. Great communication and really easy to deal with.
GTV
SILVER Star
I'd definitely be in for a set if I see some hard data with decent results. I can't imagine that Denso would engineer BS parts, so there must be some benefit. Whether or not that benefit can be substantiated is the real question right now. I look forward to seeing the results.
GTV
SILVER Star
Yeah, I think we’re on the same page...
Just came in this week. Along with with all new oem rotors and pads, an oem right rear speed sensor, and valve cover gaskets these will be going in this week.
Murckman, did you install injectors? How they working for you?
I did get them installed. Still kind of feeling them out. My truck was out of commission for about 4 weeks prior to getting them installed. I had a bunch of work done; front and rear oem rotors and pads, front calipers, valve cover gaskets, speed sensor, X2 27F battery, and the injectors.
I can’t say I really noticed anything considerable right away with the injectors. In fact I contacted Keith at Dirty Deeds to find out if what I installed were the right ones for my application (Unichip with catback exhaust) because I didn’t feel an immediate change. I was contemplating reinstalling my existing 4 hole injectors just so I could see if I felt a difference. He assured me the 250 cc ones were correct.
So now after about 3 weeks I’m still somewhat on the fence about it. Don’t get me wrong, the engine does run great with these injectors and throttle response on the low end feels better. On the higher end I felt my 4 holes made the truck pull better. There was no change at all in fuel economy.
Again, I hadn’t drove it for a month so it was hard for me to tell. I honestly don’t think there was any horsepower change (and no I’m not going to do a dyno) but it may have slightly changed the torque curve. The 4 hole ones that came out still looked really good and I did keep them. I figured after 17 years and 160k getting new ones wasn’t a bad idea. I may eventually swap them back just so I can see if I feel a difference between the two without a month downtime.
GTV
SILVER Star
Four weeks is a long hiatus. Swapping the old ones back in is the only way you’ll know.
I keep old fuel injector in a jar filled with ATF to preserve. I'll have cleaned, tested and rebuild before reusing.
As they sit unused, on the shelf or even in the engine, they may dry out (leak down). They then may develop rust speck internal. I've found fuel injector get clogged, develop poor spray pattern also leak down rate increases pass spec allowed, when not used regularly with good fuel.
I'm sending a set out now, to FIS for servicing. They'll be tested, cleaned and rebuilt which is only way to know condition for sure before installing. Serviced one's, need installing and used within 30 days.
As they sit unused, on the shelf or even in the engine, they may dry out (leak down). They then may develop rust speck internal. I've found fuel injector get clogged, develop poor spray pattern also leak down rate increases pass spec allowed, when not used regularly with good fuel.
I'm sending a set out now, to FIS for servicing. They'll be tested, cleaned and rebuilt which is only way to know condition for sure before installing. Serviced one's, need installing and used within 30 days.
Thanks for the heads up. Putting mine in a jar of ATF tonight
Murckman, I would recommend you get an OBD monitor device of some sort and check out the air-fuel ratio when WOT. With the Unichip and exhaust it's possible you are going lean with the 250cc injectors.
A cheap bluetooth adapter like this and a smartphone app like Torque and you can read your AFRs: Konnwei bluetooth adapter
You want the AFR to be in the 12-12.7 range for best HP.
A cheap bluetooth adapter like this and a smartphone app like Torque and you can read your AFRs: Konnwei bluetooth adapter
You want the AFR to be in the 12-12.7 range for best HP.
