Do you need a re-tune if you install a 3 port BCS ?
 

I asked the question of the tuner who did my Foz a while back. His answer was yes absolutely. Anyone with knowledge or experience care to chime in on the subject ?

Yes.

You don't need to necessarily alter the tune, but you need to alter the rom to make use of the 3-port.

yep that's what Martin told me in a nut shell

Absolutely! We had to rescale my boost settings on the dyno to get my MAC valve working.

Without a tune it will overboost and spike like crazy.

The MAC 3 port valves usually require about 30% less duty cycle to reach target boost compared to the stock 2 port. Also you might have to reduce your turbo dynamics (closed loop) tables as well.

thanks boys that answers my question well.

This should be noted by those in the GB for Grimmspeed BCS

[QUOTE=American Dave;511059] GB for Grimmspeed BCS[/QUOTE]

where is the GB dave? i'm keen as mustard :cool:

edit: found

[QUOTE=American Dave;511059]thanks boys that answers my question well.

This should be noted by those in the GB for Grimmspeed BCS[/QUOTE]

It was mentioned twice in the OP of the GB so I hope everyone read it and is aware of it before ordering one.

PS:what did you edit in the thread yesterday? :D

[QUOTE=Strubaru;511066]where is the GB dave? i'm keen as mustard [IMG]http://www.perth-wrx.com/vb/images/smilies/cool.gif[/IMG][/QUOTE]

It's here: [url]http://www.perth-wrx.com/vb/showthread.php?t=37852[/url]

But it's now closed, however I will be doing another one soon so once my Vendor status is confirmed keep an eye out for these plus many other goodies. :D