safe boost with j-spec twins

[botachi]

Hey guys was wondering what's a safe boost level to run with the oem j-spec twins assuming the condition of the turbines are OK?

 

I've got all the fuelling I need (800cc SARD injectors, Walbro pump, 6-an fuel lines) and Greddy E-Manage to map things accordingly, just need to know what's a safe boost level for these babies. People in the US say no more than 1 bar for the J-Spec twins as opposed to USDM spec twins able to do 18 psi reliably, roughly 1.35-1.4 bar. That's coz the J-spec items aren't as strong as the USDM ones.

 

Here I've seen some guys boosting 1.2 bar on what appears to be J-Spec twins so am unsure what to do. Currently doing 1 bar now, and very happy But if MORE can be had, why not right lol )

 

My MKIV has no cats and has a straight through exhaust from the turbos to the muffler

Edited November 14, 2008 by botachi (see edit history)

[Gaz6002]

1.2 bar

[botachi]

Thanks Gaz, was trawling through the search engines and hadn't found the topic I was searching for before you posted. Thanks mate!

[Tricky-Ricky]

Can i ask why you are using 800cc injectors on a BPU Supra? seems a little overkill, are you going single turbo in the near future?

[Thorin]

1.2bar.

 

...and yes, a little odd to be running bigger injectors with stock turbo's unless you're planning to go single.