Quote Originally Posted by stealthrt
A stock VR4 turbo is a TD04 9b. Its a tiny little thing, It could be good for 220 whp, but thats approaching its limits, if not a little past.

I put down around 400-ish WHP on race gas with 2 of them @ 18 psi (which is arguably peak efficiency for them) But that was not on the dyno, simply a guestimate based on my traps vs weight.

I have a few lying around my garage if anyone wants one.. LOL
ya they are tiny its probably the only stock turbo smaller then a ko3 i've seen. well for what he is looking for 220whp would be great, 400whp is just way too much for shit like that... thats why you see 3 series blazing by porsches in the turns