Originally Posted by
Damocell
So what is the best turbo (from any company) to extract the maximum power without blowing the engine from a 2.5 STI with the standard pistons?
How long do you need the maximum power to last for?
I'm about to add a TD05/20g to a std block 2.5 STi. The aim is to hit 400/400. Currently the VF43 is doing approx 340/380.
The 321 series did sound appealing, but its ability and cost seemed to be OTT when I don't want to split the block.
The car will be doing another 30k miles in the next 1.5 years before I sell it, so I don't want to stress the pistons too much.
If the 20g looses too much of the road ability of the ported VF43 then It won't be a large financial hit to swap back.
nick