lowridin2g
20+ Year Contributor
- 904
- 2
- Sep 5, 2002
-
Pembroke,
Massachusetts
i just made the swap from my stock 2g tb to the 1g throttle body. i got the vaccuum routings from road race engineering. only thing is 98 and 99 turbo eclipses have only 2 vaccuum nipples on the top of the throttle body. it tells u how to route the vaccuum lines for proper egr and all that but only from the earlier throttle body, 95-97 which had i believe 3 or 4 vaccuum nipples on top to the 1g throttle body with 4 nipples. what it does not tell u is the proper routing for the later 2g throttle body setups which only had 2 vaccuum nipples to the 1g tb. this is how i have it..........
what used to go to A on my 2g throttle body now goes to A1 on the 1g throttle body. the angled nippled marked A2 i have capped off. E on the 1g tb is capped off also. and what used to go to E on my 2g throttle body now goes to P on the 1g throttle body. i know its a lil confusing but if anyone with the later style throttle bodys, 98 and 99 has done a 1g throttle body swap can u tell me how u routed the vacuum lines? thank you.
what used to go to A on my 2g throttle body now goes to A1 on the 1g throttle body. the angled nippled marked A2 i have capped off. E on the 1g tb is capped off also. and what used to go to E on my 2g throttle body now goes to P on the 1g throttle body. i know its a lil confusing but if anyone with the later style throttle bodys, 98 and 99 has done a 1g throttle body swap can u tell me how u routed the vacuum lines? thank you.
!!!! i obviously reused my 2g TPS. and i also reused my 2g ISC. rre said u could use either one, 1g or 2g isc so i reused my 2g one cause i know its good. maybe i shoulkd try using the 1g one that came with the throttle body?????? 
