Ok, right now i am running the stock 550s for primaries and 1300s for secondaries. I was running stock ports and 396 wheel horsepower to the wheels @ 13 psi. Sometimes it w850s primariould sputter arround 3500 rpms. Is that the tuning or the injectors too small? Also i just had my motor ported and will be wanting to raise my high boost to 18 psi. This should be about 450hp. Will es be okay with my 1300s secondaries? Thanks Jay

oh ya, My turbo is the af61r form davinci motorworks

 

who tuned it?

 

i believe davinci, I bought the car from someone in Ill and he had all the work done there. Jay

 

That sputter is the injector transision. Meaning that is when your 1300's come on.. it'll stumble because it's probably running lean as they come online. You can change the lag and offset settings to fix this if you know how.

396 ATW @ 13psi isn't bad for the 61r I used to run it before I upgraded...

But, that injector setup isn't going to be good for 18psi.

Already at 13psi adn 550/1300 combo is probably trying pretty hard.

I would say that setup will be good for low 400hp. If i were you, I'd go 850/1600cc and you'd be ok for running 18psi on that setup. But thats also going to be dependant on the pump.

Upgrade your injectors if you want to run 450hp safely.

 

ok, I will get new injectors. You dont think that i could get by with 850/1300 instead of the 1600? if i had a good tune. thanks Jay

 

Good tune or not.. a tuner can't magically make more fuel appear when you're maxing out your injectors. If you want 450, upgrade the injectors and you'll be alright. Remember, for the 1600cc's you'll need an aftermarket rail, and to get the 850cc's you'll need to mill your primary rail.

 

I bought the 850s with the rail milled out. I have a secondary fuel rail for my 1300s. Can I use that one? Is there a way i can tell waht my secondaires are just by looking at them because i cant remember whether they are 13s or 16s. I am almost 100% sure tho they are 1300s Thanks Jay

 

wow thats a lot of power for such low boost and on stock ports! must have been a hell of a tune. where are you in ny? im near kingston ny! we should meet up... and race lol

 

I live in Queensbury, its 45 min North of Albany. I am pretty sure you are south of Albany about an hour

 

The 1300s are stock 850s that have been bored out---they're side feed and fit in the stock secondary rail, should be reddish brown in color. 1600s are top feed and fit in an aftermarket rail.

 

well my secondaries are in an aftermarket raill and top feed so they are 1600's. Thanks you for all the help
And just one more question, I am going to have to change the setting on my power fc when i put the 850s in right? Jay

 

yup.

 

why u guys are talking about secondary rails,
if i was to have an aftermarket rail and 2 1600cc injectors what else do i need to have these running on my 13brew. will it all plug in?

 

who can i get to mill the primary rail for me? or does anyone know of someone with milled rail and some 850's for sale?

 

Call up Gotham, 817 788 8726. Either Alex, steve or brock can help you out

 

I just took mine to a machine shop.. they did it for me. Any machine shop can do it, just tell them to mill 1/4" off the top area where the injectors sit.

But probably be cheaper to send it to Gotham =P

 

I also had mine milled inside as well so the spray would be closer (and seats lower)although it sprays strait I beleive.