Question for k24 people, where does the power band hit? Is it really above 4500? I'm still considering k16 billets vs k2471s...

 

filters on turbo and going mafless completely changes the spool points. I hit 27 psi at 3800 on my car with conservative timing. filters on turbo with ported manifolds and turbine housings.

 

All of the k16 and k24 options are good. You just have to match your goals with the turbo you need. K16 billets spool quick and are a lot of fun on a street car. If you are looking for more top end power the k24 based billets are what you want. The 18g billet is a good all around choice and you can go bigger like the SRM k24+, FP68 wheel, or a 20g billet. Do you want low down street power or half mile runs with a bigger setup?