[3kGT TT VR-4]

I plan on buying new 720 injectors for my car. i already bought my supra fuel pump, but i have a question. When i install these, will it do anything bad to my car since ill still be running my stock turbos? Or will it help me out? Do i have to do anything special to get it running up to par?

 

[JeffWVR4]

You'll need a fuel controller. In my case, I went with the ARC-2 fuel controller which replaces the MAS with a free-flow type. With stock turbos, and 550 injectors, I did notice an increase in performance.

 

[jon3k]

You'll need a fuel controller as well. I'd suggest the Split Second ARC2 fuel controller (about $1k):

http://www.dynamicracing.com/3000GT___Stealth/FUEL_SYSTEMS/fuel_systems.html

With those oversized injectors, you'll run so rich you're car will probably just stall out everytime you start it. Think of it this way:

Normally, when you press 10% of the throttle, the injectors then flow 10% of the max they can flow. This will be *DOUBLE* the factory amount with the new inectors (360 x 2 = 720).

.jon

 

[Jeff Lucius]

The Supra pump is not large enough to run 720 injectors at the high boost levels you will be needing those injectors for.

http://www.geocities.com/lutransys/jlucius2/j2-2-fuelpumpguide.htm

 

[3kGT TT VR-4]

so what size injectors should i go with? 550? or is that still to large? ill be running dr650s to... someone told me dynamic racing said dr650s should use injectors that are 660 or more.... is that true?

 

[pokey]

Thank you Jeff.

Why not run dual walbros??

 

[3kGT TT VR-4]

if i knew what that was, i might consider it...