Thanks a bunch

so are we 50 trim in factory form?

no, 50 trim is upgrade from stock to flow 17% more air. not sure of the stock trim size. but PT told me that the ct-26 was undersized even at 6.8 lbs from the factory....

Whats the max boost on 50 trim and how much is it to get it to 50 trim?

i was told by PT it can boost up to 25 lbs, but it wont last long hahha and its way un-efficient(creates heat). i wont run over 15 psi cuz thats about the sweet spot (where its most efficient without creating heat) i think the rebuild was $350, and to upgrade was about 100$ +- more. but call around. lots of turbo shops out there.

Whats the biggest trim the CT26 can take?

dcrusupra, im not sure how big they can go , sorry.



hate quoting myself, but i posted bad info...

i just found out that trim is just the ratio of the two diameters of the compressor wheel. EXDUCER (big diam.) and INDUCER (small diam) ...trim is how much bite the blades have not the size of the wheel.. to help clearify..

stock ct26 is a 49 trim with 1.75(in) and 2.5 (ex) compressor wheel.
My upgrade is a 50 trim,with 2.25(in) and 3" (ex) compressor wheel. the ratio of the (ex) and (in) is almost the same but the wheel is overalll 1/2 inch bigger than stock diameter..... these measuremeants are not exact but rounded up or down..
ok... sum it up again, a 60. trim on a 3" wheel will grab much more air than say a 45. trim on a same 3" wheel due to the shape of the blades, not the size of the wheel.. but at the same time the 45. trim will spool much faster than the 60. trim its all very complex and mathmatical.. im still learning.. ;)

but remember the size and shape of the exhaust side wheel will also make a difference in spool time and flow and power..

hope this help..

great info, i have always wondered about the trim stuff. make lots of sense now

if you get a trim upgrade, do you start running leaner?do you have to get bigger injectors and the lexus afm?