Hi every one I’m very new to this site. And I hope you guys can help me out. I drive a 300zxtt and a just got a fully programmable ecu called EMS from Australia. I was wondering how mush boost I could run max out only for drags with stranded internals. Please help me out as my mechanic will be tuning the car tonight. Thanks

 

you may want to swap your injectors to larger if you want to run more boost. and then go with larger turbos soon after.. that is assumming you have an intake done downpipes mid pipes cat back.. all the basic mods you want to do before screwing around with mapping your own boost and fuel charts.

 

follow the modding charts if you really want to be safe.

 

I've heard 17 psi is pushing the limits of stock injectors and turbos. So tune to 15 psi and you "might" be o.k.

I assume "stranded" internals mean standard internals?

 

my buddy Charles did 21 psi on auto turbos and an SAFC. Don't know how useful or safe this was though.

 

16-17psi depending on the condition of your car. The injectors max out around there... shortly after, the turbo/intercooler combination is too inefficient.

But really, you should only push the limits of your car if you want to be fixing it soon. Stick around 15 or 16 psi until you swap out the injectors and intercoolers... then you're good up to about 19 psi or so when the turbos become inefficient.