Iam looking at gaining 5-8 horse power easily. My car is a basic bolt on car i have cold air and a jet stage 2 module that does not do anything, and a air foil which i hope to replace with a built in one on the Holley 52mm tb. Good choice for one and what kind of gains with a basic bolt on car without headers yet but not for long looking at the slp headers 1994 z with high flow cat and gmmg cat back trying to reach 300 or so hp at rear wheels without internal modification and no NOS. thanks Trying to take a 1996 cobra with 4:10 and cold air have to beat it

 

forget the TB for now and concentrate on getting the headers -

 

Get headers.

You won't see the diff with the 52mm TB.

 

yup...
headers and cat back come way before a TB is needed.

how bout roller rocks? or maybe an electric water pump?

 

Headers
Cat back
Drag Radials
Gears

All will help. TB is not needed and will not help.
Changing to a hi flow cat probably won't help either as the stock cat flows pretty well.

 

headers, stall if you have an auto, and maybe some gears.