I have the JB+ tune that I run at about 60%, and I want to see how much boost I can make without running lean? Can't find any info on injector flow or upgrade options. I just pulled 19psi on the stock turbo on a 5th gear pull on the highway. It seems to be running fine but I want to make sure I'm not pushing it...

 

I'm running OEM injectors, and have my boost controller set to 30PSI. Don't hit it often but it's there when needed. Other than HPFP reliability, the '07 MCS fuel system is pretty good.

Find a good tuner and have them set the AFR you want. I highly recommend Manic --- they gave me a 15% increase over an already awesome dyno pull.

https://www.northamericanmotoring.co...nic-dyno-1.jpg

 

That is amazing...

Manic has been something I have wanted to do, but my JB+ pulls really well, and I am monitoring ignition timing and EGT as I increase the aggressiveness of the tune. Glad to hear you can run that much boost on stock injectors!

 

According to Jon from BMS , the only thing you need is a higher octane fuel

 

So I run 93 here up north, and gas quality seems pretty good. I hope that's enough since race gas at the local track is $10 a gallon..,

 

You can use torco

 

Spray 100% Meth and you got the octane when you need it.

 

if you're on stock turbo its pretty damn hard to lean the car out with the fuel system I'm running 20lbs through all gears on stock turbo, stock injectors with a brand new oem HPFP, on stock down pipe for 25k+ miles. The cars are built pretty strong