ok i have a 88 na that i am thinking i may do a TII swap into but i don't know if i want to go for a s5 or s4 swap. i already have a TII tranny, driveshaft, and rearend. i know that the s5 is more powerful and all that, but i also already have a s4 TII ECU and full wiring harness. so doing the s4 would be easier. but is it worth it to just try to get a s5 ECU and try to modify my s4 harness? i can also get a 14b turbo for free from a friend of mine. so should i get that and do the s4 or what? pretty much any constructive comments are welcome.

 

what is a 14b turbo?

just use an S4 engine.

 

I'm guessing he means mitsubishi's 14b turbo?

 

are you going stock....or are you going to port it....if i was you i would send your computer to rtek and have it flashed but it would be easier to just do the s4 swap but you should do a nice street port on it

 

Use an S4, an S5 will make you rewire a whole lot of the car. Stay within the same series.

 

ok sounds good everybody so if i do it ill go s4 then. i think the plan would be to just buy a street ported block and then port the intake and exhaust manifold to go with it. i am talking about the mitsubishi 14b turbo but do you think it would be better to just use the stock one? also what kind of boost could i get out of the stock turbo? is it easier to swap harnesses between the TII and the na or modify the na one?

 

Forget about the 14b turbo.

 

14b turbo is stupid small for our engine. also the flanges are completely different...

it's free for a reason.

 

sell the 14b to a hondaboy

 

In addition to doing a tremendous amount of research because most swap related questions have been answered, use your na one..........it is much easier.

john ny