Leaderboard

This read blew my mind a little. Basically talks about how a larger diameter downpipe can give massive improvements to spool and power. Hopefully you can access the link below. Great afternoon tea read! https://m.facebook.com/story.php?story_fbid=985989948244194&id=630429603800232

Fascinating. I wonder how large of a downpipe you can even fit in behind the turbo on our cars though? When mine finally gets an exhaust built I'll probably go for a 4", at least for the first 50cm or so.

G'day clubsub, I'm a Surfer who's been looking for a 4x4 van which I can use to drive down the beach and sleep in etc Recently seen some AWD early 2000's Subaru Legacy's with raised suspensions that look to meet my requirements and wold be better for a daily driver than a Van. From what I understand you can raise a car 50mm using Spacer's without needing to cert it, something similar to the below: https://www.trademe.co.nz/motors/car-parts-accessories/parts-other-makes/suspension/listing-2228292407.htm?rsqid=b36add00c5444593b2574bced3f6951b-003 Then there's the option of raising the suspension/ using Forrester suspension to really Jack the Legacy up which would require Certing something like the link below: https://www.rallitek.com/lift-springs-lift-kits/5634-rallitek-14-rear-raised-overload-spring-kit-outback-2005-2009.html I'm not very knowledgable about car mechanics so Just looking for some advice as to the cost and process involved in each option for an early 2000's Legacy (taking it to a mechanic). Input from anyone that's done this kind of thing before or knows the process would be greatly appreciated. Thanks in advance for your advice. Chur, Reds https://www.google.com/search?q=raised+suspension+subaru+legacy&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjj1rn077vjAhVWfysKHYzCD3sQ_AUIECgB&biw=1440&bih=821#imgrc=A0cEDC7UgHao6M:

Eventually upgrade 😂 At this rate sell the GR and get the VA

Yeah man. Think i'll do full 4" to my current 3" downpipe with a taper when i eventually upgrade turbos.

Most likely. If i understood correctly form the article, even though the turbine outlet is 3" you will still get big gains from increasing the diameter of the downpipe. The larger cross sectional area of the downpipe means the highly turbulent air post turbine has more room and length to sort itself out, as apposed to being jammed through a 3" the whole way. This reduces back pressure and should increase spool and power. The dyno figures to back it on his post are just nuts.

Waa. True I’ll have to flare out the pipe and make something fancy. Still bet there is no room in engine bay before right bend anyway.

+1 just read it myself. Definitely backed up what my tuner was saying as well.

My 04 XT WR-Limited. This pic was taken about a month before the motor lunched itself, its currently parked in my driveway in a puddle of its own disgrace

Aren't all EFRs 3" vband outlet?