I just installed a manifold on a 2001 gsr. I isntalled new throttle body gasket, im gasket, cable. Everything went fine. When I start up it throws code 3 and runs pretty bad. Any ideas would help because I have tried everything and even switched out 3 map sensors.

 

jusr fixed the code problem but idle is r4eally bad and the motor just bogs.

 

there must be something wrong with ur installation, i had the same trouble with the cel but i found out that it was only a vacuum. Put all the vacuum on the right place, dont bypass any of them otherwise u will run into cel. I tried to bypasss a lot of vacuum and it didnt work so jjuust double check all ur lines for coolant and vacuum..im pretty sure you will find it

 

 

I had a similar problem w/ mine. wrong vacuum hose. I had to switch it around from stock itm w/out bypassing any. just had to experiment a bit. more than likely it's probably your vacuum line. make sure it's connected properly & watch the level in the reserve reservior & temperature.