BIGWRXY

iTrader: (1)

Im not sure what to do here just having my 2.5 sti rebuilt and im looking at removing he tgv valves, so i either go with a delete kit aps,cosworth or long runner manifold magnuss or something else?????

what do we think please

Also looking at the car has vf47 twin scroll im looking for early 400's turbo recommendations or can i hybridize this???

What exhaust manifold i dont know who does a good twin scroll ??

Or should i get rid of twin scroll and go back to the usual 3 bolt uppipe gt manifold.???????

BlueBugEye

iTrader: (12)

Tumbler Deletes are easy to DIY if time consuming, I have a spare set of Newage tumblers here I could do a delete mod on if you wanted (along with a wrinkle black refurbished manifold.

Issues if you go Spec C manifold are different fuel rail mounting points if you go parallel feed. Not sure if the Cosworth deletes the tumblers also it's only drive by wire comatable (I believe).

FB Tuning

iTrader: (30)

A stock manifold can be used for the target power you're looking for, no problem.
If your car is an STi, then it should have TGV deletes fitted as standard.

If you use a Coswsorth manifold, you will still need Tumble delete bodies, and It can be modified to work with a cable throttle.

Minjeeta

Can ye no just take the butterflies out an leave the shaft in ??

BlueBugEye

iTrader: (12)

You can but what's the point? Do the job properly!

Butty

iTrader: (2)

06> STis (other than JDM) now come with TGVs

BIGWRXY

iTrader: (1)

ok thanks for the replies, it does have the valves and is 06 sti uk, i no sthe std manifold is good for the power, but i was looking at a different manifold from a cost issue, magnus manifold that deletes tumblers approx £500, tumbler deletes approx £360 so for an extra £140 i could have an uprated inlet if you see where i w as going.
I like the idea now of just using the standard bodies blanked off, less hassle..!!