The most significant mod
 

OK.... you have a bone stock 3 gen RX-7 and you can do one mod on it. What will it be?? Any suggestions?

Another car for a dd, or so i've heard :cool:

Although not a "significant mod" you had better have a boost gauge to tell you when your mods are causing too much trouble for your engines or turbos :)

Don't listen to ANYONE else. Get the DP. This is the best mod you can do for your car.

David

yup, down pipe 4 sure

the stock pipe on your car is really restrictive and it causes a lot of heat to stay in the engine. if you get a new downpipe your engine will last longer for sure and you'll get a little power too.

There are soooooo much, and I don't think there is ONE mod to be done, but a series of mods instead :)

Downpipe, but a boost gauge is EXTREMELY important.

Good tires? what's power without traction? But then is this considered a mod? hmmmm Driver skill?