^I'm running an almost idential fuel system and have none of the issues you mention. I wouldn't blame it on the 850cc primaries, there's something else going on with your setup.

 

Goodfella,

Ya know, I always suspected that. I have researched and read back and fourth of people that have no issues with drive-ability and idle, and some that do. Another issue I have is tip in. When I first dip into the throttle lightly, it goes lean. Just for a split second, but just enough to make it stutter.

I won't clutter up the OP's thread, I may PM you.

Thanks

 

One thing to remember is that people will have these issues running the OEM side feed 850cc high impedance injectors in the primary locations. Tuned properly people have run 1000+ cc primary top feed low impedance injectors.

 

Again I don't don't claim thats it is the best way to build the fuel system, i am running it on the very edge to run that much boost and I have spent years fine tunning the fuel map for the ports i have to get the boost that high, but it works, and has for a while.

za raida- i am not full of ****. I will share my maps and data loggs if you like.

the t3 68mm exhaust wheel I have is choking the crap out of the motor at 20psi), the wastegate has a hard time controling boost over12psi. A t4 is going to be a lil different I think, and mani pressure is not a good standard to compare different setups as too many factors effect the results, my 20psi is different than your 20psi.


On the street 550/1300 are more than enough power to beat most anything around...Cheap, easy, but no room to grow if you want more power, I personally don't.

 

I'm wondering what your power output is...... I mean, I'm running a single at 20+ psi with much larger injectors and a much larger pump. Also making upwards of 500 rwhp.

It's possible you're making 360-390 rwhp on your setup with that fueling, which makes sense.

I always overbuild fuel systems. You should consider yourself lucky to be having zero problems

 

What turbo do you run Goodfella? 500r right?

The guy in post 27 of this thread made 386whp with the exact same turbo as me at 15psi. At 20psi u state I make less than that. Now thats a little strange to me... 98 mph trap is how much whp??

Yes I am lucky and crazy. If you have the money spend it. What I mention is a good poor mans option.

 

With a completely straight serious face, 98mph terminal is only an honest 180rwhp in a 3000lb as raced car weight.

Edit you mean 1/8th, that is probably about 380rwhp.

 

I raise you one silly face to your straight face!

Seriously I was laughing out loud...

What are we talking about here again?