hey i just install a ported manifold, megan o2 housing and a 10.5 hotside.
started it up it was fine drove the car for about 15 to 20 mins, stop at a red light car started to idle rough at about 500-700 rpm. Got home let it sit running for about 10 mins and its back to normal.

a few things i have in mind that might be wrong.
during the install i reuse old gaskets possible exhaust leak?
or do i need a tune? the car is running rich.
please help need some advice....

thanks

 

you need to tune your car!

 

thats what it is just a tune.

 

definitely agree with a tune

 

never re-use gaskets, an old gasket will never seal the same way it did the first time..! your car will need a tune.