ok iv been researching and im a bit confused. their both the same exact turbos from what im told now i know vacuum lines on both engines are completely diffrent, i bought a 13b re and i want to modify the tt set up to just run the re with the stock t2 s5 ecu and wiring harness which iv seen done alot online, where can i find the best mod write up with pictures in these forums????

 

http://www.fc3spro.com/

 

You mention they are both the same turbo's so I assume you are talking about the JC Cosmo 13B-REW twin turbo's against the FD RX-7 13B-REW twin turbo's.

Stick with the FD turbo's as they are stronger, push more air, the rear turbo is much larger (hence less stressed) & there is more parts available for them.

REgards

 

If you mean that the front and rear turbo cartridges are exactly the same, I believe you may be correct. If you mean that the 13B-RE and the 13B-REW turbos are the same, you are absolutely wrong. I don't know and cannot confirm, but my hunch is that the 20B-RE turbos are identical to the 13B-RE turbos also, but again, just a guess.

If you are planning on running the stock T2 setup, you most likely are going to need to modify to non-sequential. By doing this, you will also sacrifice low-end boost as it takes much more to get both turbos spinning at the same time versus just one at a time.

Tim

 

ok so far i got that the fd twins are better, idk why but w/e anyways to modify my twin on my jc 13b-re motor are the vacuum lines setup much diffrent from fd's? and would modifying the twins on a jc engine harder then the fd mod? i still cant find any write ups on jc engines