GT-SS VS GT2860-5?or 2560R-5!!

How much different between GT-SS and 2530. This time, we use Garrett GT2560R-5(2860-5) .Anyway this turbo is almost same size as HKS GT2530, Just 1mm smaller compressor wheel, but price is very small(almost a half price!! from HKS 2530).
We use same vehicle, Just changed turbo, set same boost and try.................
Result....as we expected.......... good response with GT-SS, however another turbo is not too but, only 500 rev slower, and top end power is .............
Which turbo do you prefer????


Final power with 1.75bar of boost.

PROJECT X. 2 TURBO PIPE.......!!

Test with standard car!!


Can this modified turbo pipe makes any different??.............

I see some car from Japan with this type of pipe..................

let's look at standard one first.........Well..........looks inefficient.....two pressure (from front and rear turbo) is crushing each other.... angle is too sharp??? This may cause of making funny sound when turbo starts to kick in??!!


So.... let's try with standard car .........same car, same day, just changed pipe( I tried few types ....can't tell you which is the best one...haha(^_^)".


Power gain at whole range.......because.... this gain from boost?? Look at boost graph..


...........So the pipe makes each turbo better spin??!!

Mind you, this is just standard boost........if it's high boost???? May be more??

I'll try with upgraded turbo and high boost later on!!??