i can say the cruise control would be really nice.. 5 speed not so much. i think I'd get a X MR for a street car

 

I agree with everyone that says the X is the more comfortable street car and you can definetly tick off more miles in the X but since you want driving dynamics its gonna be tough to beat the IX or your IV for that matter the lighter chassis gives a raw and connected feeling to the car and you can beat the old school 4g63 for that old school turbo rush feeling

 

Something I found (not necessary related to performance):

- You look taller in the VIII/IX. People can see your shoulders where in the X only your head (if you're average person).
- In the X, when turning left on the street, you have to hunt for that median so you won't run over it. Blame it on those stupid giant mirrors. You don't have that problem in the IX.
- In the IX, driving aggressively is more safe than the X because you can't see **** in the X and need to turn your head 360 degree to cover that blind spot.
- The X feels heavier but give you a better feel going fast onto a freeway ramp.
- Making sudden transactions, i.e. quick left then quick right then left then right seems to be a little bit better in the IX.
- The IX is roomier than the X (surprise).
- Despite different engines, they feel pretty much the same.
- I don't like the HUD from 2014 and up X. I like the real mechanical feel of the old-school knots and click in the VIII and IX.

 

So having driven a IV GSR, a VI RS, a 300whp IX, and a 320whp X on our local track I found the IX being the worst of the four. The IX was a US model, the X a Can model, and the other two were of course JDM models. I personally find the IV the most fun on the track and the X the most comfortable. X is probably the best performer. I've never been in a JDM IX but I'm sure having AYC really would help the car.

 

Don't forget that the USDM EVO IX came with wrongly stacked rear differential clutch plate from factory
Correct that and there will be difference

 

Yea, more noise It does help, but it does not eliminate the car's tendency to understeer.

 

I will eventually drive both when i get closer to buying one. But i just wanted to get the Opinion of different people throughout the evo community

 

I Definitely can respect what you're saying. But it has been my dream for a long time to have a later model evo and as i have previously stated, its also for reasons such as interior quality, exterior looks and the newer 4wd system. From my admittedly limited experience, the ACD and S-AYC helps limit understeer in comparison to the older evos more basic setup and this really appeals to me.

 

Have you driven a IX and X? Don't just theory craft the potential advantages/drawbacks of ACD & AYC. Imo the simplicity, reliability, and predictability of a purely mechanical setup is the way to go. Suspension setup and alignment can get pretty much any evo's handling the way you like it.

P.S. A number of evo owners prefer the 04RS non ACD transfer case.

 

No i haven't \, but i will before i buy one And yeah i can understand that the setup is the most important part! But imo, Torque vectoring systems between front/rear and side/side have got to be better, otherwise why would it be implemented on all new 4WD cars and not just the Evos (new stis, Ford focus etc)? My point is, id rather tune my suspension set up around these features to get the best driving characteristic, as feeling my friends AYC working in his X is magnificent. Once again i appreciate what you're saying though.

 

Thanks for the Opinions! Thats very interesting to know. i did notice **** visibility in the X What is different about the HUD on the 2014+ models? In general i do prefer the interior of the IX

 

Jesus, thats interesting! A IV over a VI RS?? thats a first! What was the set-up on the IV GSR? i have a Whiteline 24mm Rear sway bar and its on its most oversteery setting and even then i wouldn't mind more..

 

It wasn't my car and it has been a while but from what I can remember: Evo 4 RS rear diff (so ayc delete), 24mm rear swaybar, coilovers (again not sure what brand), a set of Bridgestone tires (I think they were RE-71r's). There was probably more suspension mods honestly, but I don't remember or didn't ask. The car handled mostly neutral but a tap on the throttle at 5500rpm would swing the back out into a corner, but it always felt like it came out flat. Was a ton of fun to drive, which is what lead me to buying my E4.

 

1. it might spool slightly faster but you have 100+ kg more and that is felt..
2. actually, OP's market has IX with AYC and that one is much more lively than a X and will oversteer as much as you want.. so in that respect, IX wins

Double mivec is not felt so much in spool really, but the X head does flow better..

 

I might be biased, having a AYC/ACD equipped 9, but I do build these cars from time to time, and work and drive various 9's, X's, etc. and for me it is 9 every time. The only thing X does better is chassis torsional stiffness...
9 has much more space inside too.

whatever you do, stay away from SST X