Currently running:
Vortech (non-revup)
3.12 pulley
Walbro 255
RC 440's
UTEC

Other mods:
Crawford upper plenum
revup lower plenum
Invidia G200 exhaust
350Evo 3.9FD

To be installed soon:
2.87 pulley
Helix V2 test pipes
Timrod beltfix
ACT clutch/flywheel


Is it safe to run the 2.87 with the 440's? I hear of all these issues with people running the Vortech and UTEC when they go with bigger injectors like 550 or 650.

 

I'm getting a vortech soon and was looking at running a settup like yours. How much power are you producing with the 440cc and the 3.12?

 

I've been running the 550cc Deatschwerks for over 2,000 miles with the UTEC, 3.12 pulley, RevUp, Walbro, CJM Stage 2, etc. etc. etc. (see sig). The UTEC has handled everything smoothly with the larger injectors.

I think it all comes down to the quality of the tune.

 

Since the UTEC is a piggyback, it only controls the A/F ratio in boost, and cannot scale the injectors. I've seen multiple complaints about how people (or their respective tuner/s) can't seem to get larger injectors to run smoothly. Mainly having to give it gas to get it started, rough idle, etc...

Thanks for your input! Hopefully more people can chime in with their experience too, either way...

 

It can be done, but you will be nearly maxing out the injectors. I know TIMROD had that exact setup and is running fine.

 

you will most def need a fuel return!

 

Other people have said that also. There is some control as you do need to make corrections to you maps in VAC also.

The Split Second Box is a piggyback. You do need to adjust the values at start up and idle.

I have a 2003 non rev-up, 2.87 pulley, headers, test pipes and exhaust with 440cc injectors. There modified stock injectors from Deachworks and they work fine. I'm using the Vortech stock fuel system and stock pump.

 

i cant imagine how you woudl run any decent HP with 440 injectors on a 2.87 pulley. My 600cc injectors were high 90% on a subpar tuned SC trim vortech.

You have the injectors, so its easy enough to tell if they are too small when you tune it.