(1987 RX-7 GXL N/A)
Hey guys, looking to get some new headers and intake manifold, throttle body, new spark plugs, Autometer (i have my stock tach)

Basically tuning then performance. I am swapping the fluids and such.

but heres my question. I currently got 2.25" down piping cat has been removed. If i throw on new headers and intake manifold. Do I need to get a larger diamter down pipe? And any mods req'd to throw in say a Big Throttle Throttle Body?


On top of that (i know big post sorry)

Any brands you guys suggest for all that i mentioned? I got a 87' rx-7 gxl N/A.

Please tell me what you think! Thanks!

 

Racing Beat makes excellent header setups and full exhaust systems. The downside is the pricing. If I was going to get an exhaust system or header, that is who I would use.

As far as a bigger throttle body and intake manifold... why do you need it? Unless you have a massive streetport/bridgeport or something really crazy, you have no need. The stock intake system flows better than most stock systems already. I would worry about getting your car running right and doing some "reliability modifications" before you start doing anything drastic.

 

jus do the throttle bbody mod and port ur intake manifold on the intake side

 

throttle body mod? And yeah i do got a 3mm street port.