i should have most of my turbo kit pieced together soon and its time now to look into fuel managment... i only want to run about 10 psi on my d16z6 and i was going to go the route a lot of people take with dsm blue top injectors but id like to stay away from the resistor box setup... i just see it as one more thing that could go wrong... anyways i was wondering if i could just order some rc injectors for my car and not have to deal with the resistor box... if i can do this what would you guys suggest as far as size goes? itll be a dd and at first im going to use a vafc to tune it until i can afford hondata ... also would you gusy suggest a missing link and a fmu also? im just going to use this as my setup until i can get a build motor and then use hondata to run it... thanks for the help guys
-Josh

 

ttt

 

well if you go with hondata you will not need the missing link or the fmu
if you do the 450's and the missing link and the fmu you will be hella rich.
as for injectors, we have had great luck with RC saturated 550's.

 

so my d series with 550 saturated and vafc would be fine? i just want my car to run good and make a good amount of power for a little money... what setup would you guys suggest for a z6 with a XS power(i know i know) turbo kit besides the dsm 450s and hondata?
-Josh

 

to make reliable power, ditch the vafc and use hondata-uberdata-crome etc.

 

stay away from vafc/safc's. When you increase your fuel, it also advances your ignition timing, which can lead to serious detonation in an FI setup.

 

I don't see how you are looking at the resistor box as one more thing to go wrong.. as long as you wire it properly (VERY EASY) it should be very reliable. A lot of cars have resistor boxes stock..

 

So here is my input. If you are only going to run 10 PSI, you'll probably NOT be making super big HP. It will be fun though!

Here are some HP numbers supported by Injector sizes....

310cc will support 200~220whp
370cc will support 220~280whp
440cc will support 280~330whp
550cc will support 330whp~380whp

It is my guess, that at 10PSI, 450 or 550cc injectors are going to be overkill. It will run fine, but idle quality may suffer. The closer you match the injector, to the actual needs of the car, the better overall driveability you have in the end. Folks end up using 450s a lot, because they are easy to come by, and cheap too.

veggie is right to suggest that you stay away from SAFC and VAFC types of solutions. Uberdata and Crome are much cheaper, and you can do so much more with them than an AFC solution.

My suggestion is to take the money you are going to save by not buying an S/VAFC, and spend it on the proper injectors. You can get 310, 400, and 440 injectors, in the high impedance style, and not have to mess with resistors or unknown used injectors from a DSM donor.

We happen to offer Precision Turbo injectors, so of course I am biased towards them. But I also have to recognize the quality products sold by RC Eng. Not sure if they offer the high impedance injectors at the same flow rates, but a little research on your part can answer that.

Hope that helps.

Craig

 

if he is just going to stick with the vafc then yeah i would say get the smallest injectors to meet the engine's needs. but if he decides to go with and ems (which i highly recommend as well) then i say get the biggest you can afford. most ems can handle extremely large injectors with no idleing or driveability problems, the vafc is a different story. some saturated 550cc would probably work just fine and allow for room to grow.

crimson: i would say just skip the fmu or vafc idea. instead of paying for that stuff grab some saturated injectors and uberdata or crome. it will probably cost about the same but you will get much more tuneability.

 

thanks for the input guys... the reason why i want to stay away from the resistor box is because it involves wiring which i dislike a lot... i know i know the vafc has a ton of wiring but idk... i guess it would be better to do it the right way first... how much does to hondata s300 cost ready to go? my buddy got it and he said the had to de socket a chip or something... im not a huge elictrical guy so i have no idea what he was talking about and id like to stay away from that... also would it be worth my time and money to have it tuned by a professional? right now im thinking of going for some high impedence 370 injectors... would the duty cycle on those be ok? thanks
-Josh

 

Josh,

370s should be fine for your application.

We don't have any experience with Hondata products, but they do have a good reputation. Most of our experience has been with TurboEdit for OBD0, and Crome for OBD1.

Craig

 

yea vafc's are bad news... unless you get a harness which i have... i also have some injectors for sale in my thread... http://hondamarketplace.com/zerothread?id=1480723 good luck with the turbo kit i have the obd0 missing link too i heard those are hard ot come by if you need it