I am tuning my fd3s with 850cc primaries. I was aiming for 15 psi of boost but seem to be fallin short (aroung 13.5 psi @85 ish duty) Is this the usual place to run out of fuel for these injectors or could my pressure reg be letting me down.

Secondaries are 850cc also

Scott

 

If it is stock turbos **** 15 psi you are past the efficiency rating.

Secondly correct me if I am wrong but wouldn't it be better to jujst upgrade your trailing injectors to say 1300-1600cc.

Good luck,

Enter a mod please who knows more than me....

Alex

 

Ohh I forgot you also have the duty calculator on rx7.com
http://rx7.com/cgi-local/3rdgencalc.cgi

Hope this helps,

Alex

 

Here we go again.. NO you are not past effeciency rating.. Reliabilty? Perhaps. If you are talking stock fuel you are maxed out. Or is it 850's all the way around. Be a bit more specific. Hope you have an a/f meter hooked up. Good luck.

 

Its 850's all round. I have my LM-1 to hand for tomorrows job. I think it may be due to my - lag times. gonna go back to 0.04

Scott