That's interesting, thanks.Ive been told several times that smaller injectors atomize to fuel better, so imo 4 smaller injectors would be better then 2 larger injectors.Just curious, it is any advantage to run 4 injectors compare to just install bigger ones in place of stock ones ? :question:The new Powercommander is going to replace my Dynatek ignition system and will automatically tune every split second. I can go in and set my desired AFR and it will constantly tune to keep it there
I'm running an additional two injectors (a total of 4) and I've beefed up the fuel pump and fuel pressure regulator.
I'm hoping to run the motor pretty mild since I will have a lot of practice days before the race, but still be around the 200hp mark and a 90 mph top speed.
milos
Haha that's awesome! I have high hopes for this setup, especially since this race begins at 9,000ft and finishes at over 14,000ft elevation!
I never thought about that, thanks for the info!Ive been told several times that smaller injectors atomize to fuel better, so imo 4 smaller injectors would be better then 2 larger injectors.Just curious, it is any advantage to run 4 injectors compare to just install bigger ones in place of stock ones ? :question:The new Powercommander is going to replace my Dynatek ignition system and will automatically tune every split second. I can go in and set my desired AFR and it will constantly tune to keep it there
I'm running an additional two injectors (a total of 4) and I've beefed up the fuel pump and fuel pressure regulator.
I'm hoping to run the motor pretty mild since I will have a lot of practice days before the race, but still be around the 200hp mark and a 90 mph top speed.
milos
Yeah just running two injectors would be nice. To me the more simple the setup, the less that can go wrong, but like I said I've got over a year on the 4 injectors and well over 1,000 miles on that setup without one issue and plenty of fuel.
You guys run crazy HP, which need lot of fuel. :ride: Reason I ask I tried those bigger injectors from MPI and they give me so much fuel I can't use them with MCX 3th injector, even when I turn fuel down with Dynatek. I even like to try eliminate 3th MCX injector and run just this 2 oversized ones with boost controlled fuel pressure regulator , what will happened. But again I don't run HP and RPM like you.
milos
I haven't installed it yet, but my understanding is that it does everything that the dynatek does, plus the auto tune feature. The auto tune unit comes with sensor that plugs into the exhaust, but I also want to continue to use my MCX display so that I can see everything that's going on. I need to do some more research and see if I can piggy back these two or if I actually need to drill another bung to run both units. I will get back to you on this.
before the throttle body is the optimal place, but i have seen them before the intercooler. gotta do your research on which bov to get as some leak and can cause vacum leaks. the best i ever used was a sequential by hks.A blow-off valve. Kind of anxious to hear how it sounds at 20+ psi
Yes, I will be at 900cc's with a ported head, 1mm larger valves and an upgraded turbo. The stock MCX turbo is a TD04-12T and I upgraded mine to a TD04-15T and clipped the hot side 15 degrees. The 15T turbo spools really fast and is very efficient at 20+ psi. This turbo alone easily supports 260whp on most other turboed platforms.
Milos knows what's up! Have you heard one of these yet?
Yeah, we used to play with it, when my son had Mitsubishi Eclipse turbo.
He really like the the sound of blow off valve. :ride:
Please, post some pictures if you can, I really like to see how and where is plumbed to the MCX system. What brand is it ?
I was told to use only good quality one, which close fast after blow by to avoid suck in the dirt .
milos
THX and keep us posted on your progress. :ride:
The MCX kit doesn't come with an ECU to my knowledge. I've always just used the stock ECU with a Dynatek ignition box and tuner. If you get MCX's display, which I do have, you can use that to watch all the vitals and to also hook a laptop to and custom tune.
THX, actually before the throttle body will be perfect place with MCX set due long hose going from discharge side of intercooler to TB. Lot of space to put Blow off valve there on T's.before the throttle body is the optimal place, but i have seen them before the intercooler. gotta do your research on which bov to get as some leak and can cause vacum leaks. the best i ever used was a sequential by hks.A blow-off valve. Kind of anxious to hear how it sounds at 20+ psi
Yes, I will be at 900cc's with a ported head, 1mm larger valves and an upgraded turbo. The stock MCX turbo is a TD04-12T and I upgraded mine to a TD04-15T and clipped the hot side 15 degrees. The 15T turbo spools really fast and is very efficient at 20+ psi. This turbo alone easily supports 260whp on most other turboed platforms.
Milos knows what's up! Have you heard one of these yet?
Yeah, we used to play with it, when my son had Mitsubishi Eclipse turbo.
He really like the the sound of blow off valve. :ride:
Please, post some pictures if you can, I really like to see how and where is plumbed to the MCX system. What brand is it ?
I was told to use only good quality one, which close fast after blow by to avoid suck in the dirt .
milos
I was worried about that as well because I will be running race gas and I didn't want it to quit working half way up the hill. The Autotune has a feature where you can set a floor and a ceiling limit. So if the sensors goes out you can set it to where it never leans out or riches up by more or less than say 10% or whatever you input. It's definitely a nice safety feature to have.
That's kind of what I was thinking as well! The only thing is I hate to have it under the bed, but I will play around with it and see.
Probably only a couple of inches
Yeah it's over 60% paved now. I'll be setting the suspension up to get me in and out of the tight turns as fast as possible :ride:
Just curious Cliff, what happened when oxygen sensor quit ? You get nonsense reading or gauge just show not reading at all ?
I had one go out as well and I thought it was being I was running some race gas, but I think it was just a bad unit. When mine went out my digital AFR gauge was all over the place and the numbers we just all jumbled.
The sensor is $41.00 at Checkers... I bought one a while back...
$1.00 or $100 I really don't think was just a buck.IMHO
Do you mean $100.00? That's about what mine was if not a bit more! It's a Bosch oxygen sensor that my AFR gauge uses and it's not cheap :rollfinger:
