I'm working with a factory stock 305 HO and a Vortech V7Ysi through a Spearco 6-Core intercooler. Went to the dyno last year with 30lbs Accel injectors, Walbro intake fuel pump and holley adjustable fuel regulator was able to yeild a pull of 385hp and 430ft lbs of tq. @ 4500 rpm. Couldn't make a full pass due to leaning out. Went back again couple months ago having install an external sump, Aeromotive A1001 fuel system and a Vortech Super FMU with 36lbs Accel injector and pretty much had the same results with a 410hp and 485ft lbs tq shuting down early at 4500 rpm again.

So here is the delima! The factory ECM will only recognize 16-14ohm saterated injectors, so 36lbs is close to the limit of availablity (I think anyway) so most folks like myself start looking at stand alone FMS. I was considering the Accel DFI Gen VII plus, but by the time I purchased that, another lap top, eight new injector, I would put out $2000.00 plus dollars.

After scratching my head a little, I remembered we purchase Turbonetics kits with a stand alone FIC that they package with the kits. These kits are produced by a company in the UK called Aquamist. It is a two or four injector driver that auto recognizes what ever injector type you chose and is fully programable (which Turbonetics doesn't want you to know) to 10,000 rpm via engine rpm and a 2 or 3 bar MAP sensor. The system is only $350 plus maybe $250 for the turndown, fuel bosses and line modifications.

I have chosen to run two 160lbs injectors (peak) which will still give me my factory driveability and tons of fuel on demand. Enought to max out at around 850hp according to my calculations.

I hope to go back to the dyno next week and tune my new little device. I promise it doesn't take a brain surgeon either. Nine interpolated screw pots and your done. MAPping and RPM do the rest.

Later

 

you can get up to 60 lb injector high impedence injectors.

 

Some factory drivers will not recognized the 12 ohm high impedence injectors past 50% of the cyclic rate. Had that problem already! Not technical enough to explain why. Might be a good place for someone who does know to post up.

 

Seems to do just fine in the thousands of kit Turbonetics has sold on the market. On the Honda kits, the supplimental injectors are even further away from the throttle body than mine. I hope for good results and will post up after I goto the dyno. Can't imagine loosing to much atomization at the high velocity most boost cars experience. System activates 2000 rpm plus and is pressure dependant. Testing will tell the tail!

 

Well, I've read a lot a negative feedback on using the Aquamist FIC System. It was a little late to back out, had the system, already modified the intake and fuel system so I went forward with the project just a little worried.

Finished the installation today, did all the no start tests, pre-programed the unit and started the car.... After the car warmed up, gave it a few hard revs and the system came alive. Watched the l.e.d.s climb with the rpms correctly and the MAP sensor ligtht on at 10 psi. So all was well. Took the car out for a test drive and guess what????

THE FREAKIN THING WORKS GREAT!

What the hell is everybody talking about this system not working. I had great fuel enrichment all the way to 7000 rpm! And the car pulls it's *** off. No more leaning out at 4k. Can't wait to make it to the dyno to fine tune the car. And I did it all for $500 dollar!

 

I had something like that called a Superfueler that put 3 extra injectors after the throttle body. My experience has been that the distribution isn't that great, as evidenced by sporadic broken pistons.

As far as driving larger injectors off the TPI computer, check with Craig at moates.net. He's making 550 rwhp N/A on a stock TPI computer.