What size injectors for a 50-trim??
 

Just wondering what size I should go to get the full potential out of the turbo... would you guys recommend chipping to compensate and then fine tuning with an safc? People have recommended dsmlink but to be honest, I'm not sure what the benefits are. Thanks much guys.

Re: What size injectors for a 50-trim??
 

660s or 720s. Have shane at DB burn you a chip during a dyno session. No afc needed.

Re: What size injectors for a 50-trim??
 

1g, 2g, gvr4?
FMIC?
race or pump gas?
a properly burned chip will balance out to the same afr control versus a dsmlink, but timing control is a bit more involved in a burned chip setup.

Re: What size injectors for a 50-trim??
 

Yep, 660-720 will be perfect. I ran 660's on my 50 trim and didn't quite get them maxed out.

Re: What size injectors for a 50-trim??
 

I've been running 680s on my 50 and they work great. They'll actually be for sale pretty soon pending my 1000cc injectors

Re: What size injectors for a 50-trim??
 

how good is a tune by shane on the dyno? so... 720s will be more than enough? will i need to upgrade my walbro 190?

Re: What size injectors for a 50-trim??
 

Shane will tune your car really well. imo db is usually a little more spendy, but it's worth every dollar. That's where I'll have my car tuned in the spring

Re: What size injectors for a 50-trim??
 

If you truly are maxing out the 50 trim, then the walbro likely won't be enough. What is the rest of your setup like?

Re: What size injectors for a 50-trim??
 

Dsmlink and 1000ccs are what i run on my 50trim but im running e85

Re: What size injectors for a 50-trim??
 

Rewire your Walbro 190 and I'm willing to bet it will be more than enough.

Re: What size injectors for a 50-trim??
 

fmic w/piping, 2g ehxuast mani w/40mm wastegate, 2g o2 housing, 2gmas, 190 walbro, 550cc injectors. that's about it right now.

Re: What size injectors for a 50-trim??
 

The Walbro 190 might work. It will depend on the boost pressure, fuel pressure and HP being made. At a base fuel pressure of 40psi + 30psi of boost a Walbro 190 @ 13.5 volts will flow around 38 gal/hr. 660cc injectors can supply around 42 gal/hr of fuel maxed out, so they max somewhat near each other. A really good 50-trim setup on race gas and high boost would be able to max both 660s and the 190 pump though, but most people won't ever do that.

Re: What size injectors for a 50-trim??
 

i'm hoping to do pump gas, around 350hp...

Re: What size injectors for a 50-trim??
 

I think you are hoping a bit high. 3" exhaust? What kind of FMIC? I would guess 310 awhp on pump.

Re: What size injectors for a 50-trim??
 

that's fine. 300would be great. thanks much.