Kraziken

I'm looking to buy another 3rd gen and I have this list of reliability mods.

Replace AST.
Replace radiator with Race radiator.
Replace pre-cat with Downpipe.
Replace vacuum hoses with silicone hoses.
Replace the Y-pipe and crossover with upgraded Japanese efini part.

I was also thinking about replacing the intercooler with a more efficient one. I thought I read someplace that you need to also modify/replace the ecu if you get a more efficient intercooler to prevent other possible problems.

Also, with the replaced pre-cat, will the car still pass emissions?

Thanks
Ken

Bucrx7

The car should stil pass emission with the DP with the car is fully warm. There's a 3 mod rule then after that you will need a ECU.

Example: Intake, Downpipe, Catback, Next mod is ECU.

RecKleSs

1) You can save some money by just deleting the AST.
2) If money is a problem and you can get the upgraded rad, get the fan mod which should be done anyway.
3) The Y-Pipe doesn't needs to be replaced, unless it has a crack on it. Also, if you get an ic, most likely it will replace the Y-Pipe.
4) With the downpipe and ic you will not need to replace your ECU yet.

Wade

iTrader: (1)

You can do just about all the bolt on mods you want and you won't need an ECU unless you want to raise the boost level. The 3 mod rule is just a myth.

Wade

93TTRX7

As long as you still have your main cat risk is minnimum (but **** can still happen)...If I were you I'd go with the radiator, the IC, the downpipe, the exhaust, the RB air duct intake, and ACT clutch/flywheel set up.

Nameless

With those mods you will not need an ECU. If you add the IC onto there it'll depend what IC you get. I knew someone who was using a GReddy SMIC, with DP and CB on stock ECU.