Gents

At present the MS is controlling a T25 on can levels of boost (6psi with 7.5psi spikes) using the stock 1.6 injectors (which according to FAQ are 230cc).

I have some GTX injectors which by the serial number are listed as 360cc in the FAQ.

My goals are to get to 9psi EBC with the MS, would this be a safe target, given that I just meet 12.1 on the wideband at standard boost levels using the stock injectors?

The setup is a HKS mani and t25 41/49 (tiny) with a custom d/p and 2.5 inch exhaust.

Now calculating Req Fuel what AFR should be used? I thought there was mention a while back that DYI uses 14.0 for the AFR rather than 14.7
Is this crucial? (probably not since MLV will tune the difference out)

 

WIth good tuning, the afr for req fuel shouldn't matter. This is just a "starting point" for the fuel map. As far as how much boost you can run, tune it and keep your afr's in check. Slowly turn up the boost while tuning the new cells you are in. Keep an eye on your injector duty cycle. If you can keep your afr's where they need to be and keep the duty cycle for the injectors below 80%, then it will be fine.

 

360's are safe till about 200 crank hp. http://www.rceng.com/technical.aspx

 

Thank you for the replies. It looks like I'm safe
Good link Paul that explained quite a bit.
Cheers
Nuno

 

I was able to achieve 100% DC on 305cc injectors at 6psi (around 160-170rwhp).

 

you say it as if it's some kinda of feat.

 

Behold the limits of small injectors!!!!!

 

Yeah? well I was able to achieve 102% DC on my 440s, so there!

 

I have yet to learn...only hitting 85.7% on my 460s. failure.