[mwd]

Curious as to whether these mods real pay over stock performance on my 2004 V6 3.8L.

1. CAI with a tune.

2. True Dual Exhaust

3. Throttle Body; Spacer?

4. 3.73 Gears with T-Lok

5. Headers

Just want to know if you guys think there is enough performance gain here to make the mods worth while. Thx.

[2oo5GT]

My friend did all that, minus the spacer and it's not worth it. Also had UDP's put on and he liked the performance.

[GuitarstarX7]

I would leave out the headers and throttle body and spacer.

An intake is definitely worth the investment.

The tune is ok but costs a lot for the few hp you get.

The exhaust is worth it if you are going mostly for sound but you wont feel too much of a gain from that.

Gears are pretty sweet but are expensive and I expected a little more from the 4.10s

[232-K7]

numbers 1,2, & 4 are worthwhile mods.

[Redlyr]

Headers are only worth it if you are going to with long tubes and a shorty midpipe. A throttle body is not worth it unless you are planning on running a super/turbocharger.
Dual exhaust is a must just for the sound.

[3.9Vert]

when i put dual exhaust on my car it really woke up...

I used to lose to my friends celica when my pipes were stock. I threw on a dual exhaust and an intake now i win...

[dieselmonkey]

forget the spacer get the tune and gears first and then the intake and then exhaust and retune it all

[jkmiller87]

I agree with everone else. This is what will actually help your performance:

1. CAI with a tune.

2. True Dual Exhaust

3. 3.73 Gears with T-Lok(I am going with 4.10's, but it is up to you)

[jmathis3]

I would leave out the spacer and intake. get an exhaust system, throttle body will help with the tune, and gears(4.10's for an auto, and 3.73's for 5 spd). id save the tune for last since with gears you'l need to get your speedo re-cal'd and tunes are not cheap. do some research be4 you tune too, as the guy said be4 its exspensive for little hp, but I personly got more hp and tourque than any of the other mods from my tune. or just find one with all that done and save a lot of cash

[Markstang690]

u can actually calibrate the speedo yourself.. its pretty simple really no need to buy a whole new tune so if i were you id get a cai + dual exhaust(any order), then a tuner, and then gears.. no spacer and no throttle body.. and then youre all set