Hmm interesting read.   I presume the shift kit applies to all autos? I may be interested in that down the line.  As a newbie to under the bonnet, could you elaborate on how that works?

Cheers.

Shift kit works on the basis of stronger and thicker springs that help actuate each gear change, and little bearing that are changed, this forces each gear to shift harder and faster.. one of the best mods, you will get your car to chirp between gears

Thenks Brendan - I hope that people read your post and take note....

I've never been trying to get more power out of the mods I've done to mine. If I wanted more power, I'd throww a TT in the bloody thing.

All I've been trying to acheive with mine is improved "drivability".

- I've got the extractors, these made a substantial difference.
- I've done a direct air feed - didn't boost power, but it did make it rev more freely.
- I will put a new muffler on the back, partly because the old one is getting abit rooted and partly because I like the sound that comes from the boxer. I am expecting ZERO performance gain from this.

That's about as far as my 'mechanical' mods will ever go on the RX. Although I must say, that the small things I have done have made it a nicer car to drive compared to a stock standard RX.

I tend to agree with you that most of the things going on with POD filters e.t.c. is a waste of time fo an NA.
I'd even be inclined to say that all of the mod options you listed would also be a waste of time given the expence involved. If I were prepared to spend that amount of money getting minimal kw upgrade for my NA RX, I'd have to be nuts. The money would be better saved for a nice MY07 GT-b wagon... Noice....

I think that all the NA guys out there would be better off spending their $$'s on things like coil overs, sway bars, ant-lift kits, shocks, extractors, non-rice exhausts, brakes e.t.c......

There's my 2cents....

Cheers,
Chris

XXB4XX wrote:

very true mate,
although the mods I listed actually do make a difference though, even if it is 5 KW's
pod filters and bonnet scoops dont.. hehe

Oh yeah - couldn't agree more with you about the mods you listed. Never meant to infer that they wouldn't make a difference. All I'm saying is that the cost versus the gain isn't worth it...

Hang on..... Are you trying to tell me that the bonnet scoop that I ordered from ebay isn't going to add 10kw of power and cut my 1/4 mile time by 5 seconds like the advert claimed it would?!?!?!?!

I'm devastated..... Now I'm going to have to rely on mt STI badges and ralliart stickers....

1000% agree with ya XXB4XX..

i did have a catback exhaust purely for sound and i didnt expect it to add any power.. but now having it removed, it was probably a restriction in power..
the stock exaust is great on the RX. im sure its designed for perfect backpressure to the engine, unlike turboed cars which dont have this problem


the only mod im doing now to my N/A RX,...is selling it and buying a b4

I agree with ya sentiments also that have been said. hence holding back from doing anything further. Ive only done s/s rear muffler and the cheapo cai as mentioned in the other thread for a laugh. Not bothering with anything else now, I have too many other concerns I have to deal with at this stage like 100,000km major service. next car will have more power out the bat. Just have to wait a bit before I decide what. In the meantime the car is giving me reliability and comfort which is more than the I can ask for from previously owned cars.

Transmission Cooler
The bare minimum you should do your AUTO is install a tranny cooler and run synthetic ATF through it. Heat is what destroys AUTOS so the tranny cooler is key!

Shift Kit as mentioned above.

The second MOD to your AUTO should be a shift-kit. With a shift-kit upgrade your AUTO springs are changed to softer ones which ensures the gears changes are more firm. With this upgrade they also change the actuators. If you have a tiptronic AUTO in your REX the quicker and firmer gear changes make for a better ride. This MOD also adds strenth to your AUTO.

Hi Stall Torque Converter
This is purely a performance MOD. A Hi Stall MOD means upgrading the torque converter in your TRANNY. This is best done after you've run you REX on a dyno, because from the dyno readout you can determine your perfect launch point (typically between 2800 and 3200RPM). An upgraded torque converter typically removes the AUTO lag on acceleration and gets you to the ideal power range (boost) real quick! This MOD makes for perfect launches all the time.
FYI. I stole this from a WRX site, but applys to any car.

Intake and Exhaust FTW. they make a big difference as far as driveabilty.
But i  also very much doubt that they would add any significant HP.

U lost me at N/A

I agree with cahmon im in the process of going down this path.

currently have a tranny cooler, but needs upgrading, need to flush the gearbox too - anyone know were to get this done properly? As from what I can see it may require 2 people and a lot of oil to properly clean it

yes, power is good.

but i think you gotta ask what you want from the car. are you trying to make it as fast as a GT? or do u actaully love a NA?

if you love your NA, go out n buy a lib with a WRECKED motor.

get a cosworth 2.5 block, heads n cams. approx USD$11,000 not inc post n labour

10500 redline. mucho NA fun.

but it's based on the sti short block. which some don't quite like cos it's been shaved to s**ts in order to save weight.

everythign can be done.

note: stop reading if you are easily offended.



but honestly, how many out there are modding a NA 4 cyc cos they couldn't afford a GT?

i'll be the 1st to admit that i'm one of those.

if you wanted NA power, the RB would have been the way to go.

but that's in the same coin value as a GT. i'm talking new here. not used. no real idea what they are worth used.

evey1 spending money on more go, what about more stop? more turn?

there's an old saying in grassroots racing: make it stop, make it turn, then make it go.

overl0ad wrote:

if you wanted NA power, the RB would have been the way to go.
.

Pffft . . . . 1UZ with trumpets: chop chop

pft, makita bro!