car want idle smooth even after adjusting tps....

set up:

gsr head 3 angle valve job
skunk2 manifold
68mm tb STR
ctr cams
b16 block w/ ctr pistons
b16 injectors
fuel pressure is at 43 psi

should i go back to itr tb?

what else can i do?

is the 68mm too big for my set up?

 

YEP,
go itr 64mm

 

that is incorrect infomation...

i was running a 70mm ericksracing one and had ZERO problems.
and had less compression then you. take your time, figure it out.

 

that's fine...just don't go to big
good luck

 

I would stick with the ITR.

 

what about upgrading the injectors to the prelude 345cc? ...they are peak and hold, plus im running 88-91 si harness.

 

70mm thats turbo sized

 

yes thats to big your not running a b20 so litter 64mm would be your best bet all your doing is losing power if you don't believe me take it to get dyno and y'll see

 

this problem has nothing to do with the TB

I got a 68mm TB and runs smooth sound like a fuel issue instead of a throttle response

but for the set up u got yeah I would go back to ITR TB

but there is still a problem there