hey guys im building a high comp rb30et and i was just wondering what size injectors should i use i found these ones do u rekon these are to big or would they work ?? http://cgi.ebay.com.au/ws/eBayISAPI....:X:RTQ:AU:1123 (http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=220608821348&ssPageName=ADME:X:RTQ:AU:1123)

With a aftermarket ECU and fuel rail they will. Need to get hose end ones if you keep the standard rail

what kind of aftermarket ecu would i use and the seller actually said the hose would fit straight over them and what would be the biggest injectors i could use with standard non turbo ecu or with the vlt ecu??

Anything tunable will work. Microtech, autronic, hell, even a nistune might work. I'm not to sure about fitting the hose, never tried. Someone else should know that...

Quote: Originally Posted by King-3l [View Post] Anything tunable will work. Microtech, autronic, hell, even a nistune might work. I'm not to sure about fitting the hose, never tried. Someone else should know that... cheers mate for the help

Stock ecu will only run stock injectors

I recomend getting the injector/rail kit sticks sells on here. Think there a siemens 440cc injector? if memory serves correct. Combine that with a nistune and you'll be more than happy for while..

yeah those injectors will run on a standard ECU but you will need an adjustable reg to go with it. Im runnin the 440cc injectors, 044 pump and sard reg off a standard turbo ecu. took a bita F'n around to get it to run but it is doable. got a nistune now but havent had it programed so don't know exactly what gains they give

Quote: Originally Posted by Bitza VL [View Post] yeah those injectors will run on a standard ECU but you will need an adjustable reg to go with it. Im runnin the 440cc injectors, 044 pump and sard reg off a standard turbo ecu. took a bita F'n around to get it to run but it is doable. got a nistune now but havent had it programed so don't know exactly what gains they give DONT listen to this ****. it may work buts its hell dodgy.

m8 its only dodgy if you wana run 20 pounds through a stock engine. If its run at 10 to 12 its fine. done bout 5000 since putting mine in and after the first 100 or so getting it right it hadnt missed a beat. But a dyno tune is essential at some stage.

Quote: Originally Posted by theVLguy [View Post] DONT listen to this ****. it may work buts its hell dodgy. This guys right, it may work but its a f'n dodgy way to do it, and you'll most likely be blowing massive amounts of smoke. You need to be able to adjust the amount of time the injectors are open, as you may need the fuel at open throttle, but at idle and low demand, you need to reduce the flow back to what is about normal. 700 cc injectors are gonna flow about 4-5 times the amount stock injectors would in the same amount of time. You do the maths. Do it right, its worth it

Quote: Originally Posted by King-3l [View Post] This guys right, it may work but its a f'n dodgy way to do it, and you'll most likely be blowing massive amounts of smoke. You need to be able to adjust the amount of time the injectors are open, as you may need the fuel at open throttle, but at idle and low demand, you need to reduce the flow back to what is about normal. 700 cc injectors are gonna flow about 4-5 times the amount stock injectors would in the same amount of time. You do the maths. Do it right, its worth it so how would i reduce the flow back or should i just get smaller injectors and does anybody know were to get gtr injectors from and what size are they?? what size injectors do ppl think i should use to acheive 250kw-300kw??

anything bigger then standard requires another tunable ecu.

http://cgi.ebay.com.au/GENUINE-DELPH...em 3361430759 (http://cgi.ebay.com.au/GENUINE-DELPHI-ROCHESTER-FUEL-INJECTORS-870cc-FJ10476-/220675114841?pt=AU_Car_Parts_Accessories&hash=item3361430759) these are better than the ones u had on your post, that or 1000cc + microtech= good stuff

Lok at sticks advertiser post. He has some pretty good kits, and can help you out with a deal on the ECU as well. If you want good power, or the opportunity to go there later, he has a deal with a billet fuel rail and 1000cc rochester injectors for about 570 all up. They will need an aftermarket ECU tho, but as said above, anything biger than standard will need that anyway

Quote: Originally Posted by Bitza VL [View Post] yeah those injectors will run on a standard ECU but you will need an adjustable reg to go with it. Im runnin the 440cc injectors, 044 pump and sard reg off a standard turbo ecu. took a bita F'n around to get it to run but it is doable. got a nistune now but havent had it programed so don't know exactly what gains they give Your one stupid mother ****er!

Quote: Originally Posted by King-3l [View Post] Lok at sticks advertiser post. He has some pretty good kits, and can help you out with a deal on the ECU as well. If you want good power, or the opportunity to go there later, he has a deal with a billet fuel rail and 1000cc rochester injectors for about 570 all up. They will need an aftermarket ECU tho, but as said above, anything biger than standard will need that anyway ahk so these would work with standard fuel pump aswell or do i need to upgrade and will they work without the motor being turboed yet?? sry bout all the questions just making sure i have got some research behind me before attempting this cheers for all ur help to guys

Ok, with an aftermarket computer, yes they will work with a standard fuel pump (but limited power), and will allow you to go turbo without any more issues. You will need to have a tune for NA, and then retune for turbo if your going that path later. If your planning on staying NA, stay down about the 440cc mark Maybe just sit ack and think about your end plan, and work out if you need to go here or not. If your not going turb's, you may need to re-evaluate your options

Quote: Originally Posted by King-3l [View Post] Ok, with an aftermarket computer, yes they will work with a standard fuel pump (but limited power), and will allow you to go turbo without any more issues. You will need to have a tune for NA, and then retune for turbo if your going that path later. If your planning on staying NA, stay down about the 440cc mark Maybe just sit ack and think about your end plan, and work out if you need to go here or not. If your not going turb's, you may need to re-evaluate your options thanx for ur help mate yer im definately leaning towards turbo later on down the track after the p plates that is and wen the funds can permit me to do so otherwise a cheaper option would be to go for a vs motor in it but atm im just looking at different options but thanx for ur help mate i appreciate it

If it was me I'd be buying a flow tested set. I bought a set of Siemens 750cc's off Ebay and it nearly cost me an engine due to different flow rates