I did a bit of searching and couldn't really find what Im looking for. I plan on competing pretty competitivly this coming season and Im trying to plan my upgrade path. I was Planning tires and sway bars to start but after looking at a few things I am considering doing the TRE Rear Diff upgrade and tires to start with instead of the sways and tires.

Couldnt really find anything on choosing one or the other, I feel liek the *** end will rotate easier with the diff over the sways but Im worried about body roll on the stock suspension untill I get coil overs.

Any advice would be greatly appreciated. Thanks.

Josh

 

Your car is going to be a handful with stock suspension @ your power level. You're in Street Modified at the very least, where race tires and stiffer/adjustable suspension are absolutes if you want to be competitive.

 

Yeah I agree entirely but I was trying to plan out the path to see where I was after each upgrade so I can set my car up better/more to my liking. Ultimately I plan to have full sway bars coil overs the rear diff and then some under body bracing just trying to go piece by piece so I don't get completely confused with how the car is gonna handle and what to expect from it.

 

You really should start with adjustable coilovers (double adjustable preferred). You'll get more out of your set up with coilovers that you can adjust. Want lots of oversteer - crank up the rebound/compression in the rear, want less oversteer - turn the adjustment down. Nothing else you do will make as big of an improvement as good coilovers.
Check here for some info;
https://www.evolutionm.net/forums/mo...iscussion.html

 

Not even tires?

 

imo nope. Putting on a set of A6 Hoosiers will give you more grip but cause the car to lean over more, causing the inside rear tire to come off the ground in turns. Also without camber plates you can cord the outside of the front tires quickly.

 

Plus you're cheating yourself out of a lot of driving experience going to R's right off the bat. Driving with 'bad' tires actually is going to improve your learning curve.

I would go with the diff upgrade and nothing else for a season (unless you already have experience) then go with tires/coilovers.

 

Ok thanks, I'm also thinkin about going Advan AD08. I have 18x8.5 and was gonna run 255/35R18.

 

Z1s are a cost effective and highly competitive tire, that is worth looking into. I would strongly recommend doing the diff and the coilovers, then you can work on getting camber and toe happy for that setup, and learn to drive it, very quick... add the A6 to the mix after showing you can wring out every ounce from the street tires...

 

Tire reccomendation would be z1 star specs. a 255/35 on a 9" rim will do nice. I just finished my 1st season on the stock MR suspension and won the season in points. On the stock suspension i would have been competitive in the SM division but not dominating. Get yourself a 2 way adjustable coilover setup, if your running street tires i wouldnt go over a 10K or 12K spring rate because the tires wont be able to handle it. the TRE is a good mod but i do not believe it should be the first. I think it should be one of the last. Mod break down should be:

1. Seat time, you can push the stock car / stock suspension very far. Its the experience thats going to make you competitive
2. Tires. Start with street tires as they will make you a better driver. Best tires to get are the Yoko AD08's, Dunlop Z1 *specs. If you decide to do a rcomp then the Hoosier a6's are great
3. Suspension. Get a set of 2 way adjustable coils and figure out a spring rate that would work best for your setup. I would look into Stance Coilovers, Fortune auto, KW varient 3's for affordable setups.
4. Sway bars, endlinks, roll center kit, bumpsteer, steering precision. And a quality corner balancing and alignment. Tune the suspension in to your use and style of driving. There are alot of adjustments and tweaking that can be made here to get the car to perform how you want it.
5. After you have an understanding, feel of the car and know your style of driving then determine if the TRE rear diff is something you want to invest in. Its a great product and will make the car faster if you know how to handle it and it fits your style of driving. You want to build the car around you.

Hope that helps

 

+1

i honestly think you should do the tre rear diff first - people who have gotten it recently are saying they have to relearn how the car drives because of the core handling difference

 

lol Well I have heard just about every different upgrade I want to do should be first based on the various posts...not as desisive as I would have liked.

 

I do agree with kyooch on this one, just due to both the power you are putting done (assuming your signature is the same car you are looking to autox), and because it does change the cars behavior drastically. Class winners in STU for two years are running high quality single adjustable coilovers, so do not get hung up on single vs. double adjustablity to start off. WHEN you do it, I would definitely stick to something like Ohlins, AST, Moton, Bilstein, even their single adjustables are smoother than many budget DA coilovers. The car on stock suspension and a rear diff upgrade, would still be a blast as well.

 

In order to be truely competitive you MUST first start with the rule book. Seriously competitive racers start here before they even decide which car to run. So, that being said...you have a modded EVO you want to run. Look at every mod you currently have and decide which class you must run with all mods currently done. Then, would it make a huge difference if you eliminated something/ reinstalling something to place yourself in a class where you'll be more competetive. Then, modd your car to the limits of that class and have it set up properly with adjustabilty for different types of courses. Then, place your remaining focus on how to drive the car/ courses.
This isn't the ideal way to become competitive in auto-x, but it is a method nenethelss. You might be happier not trying to be competitive and simply trying to improve your times and car throughout the year. This way will allow you to modd your car as you go. Likewise, being outclassed by a car that is modded to the gills in your same run gourp won't be a factor because you are focusing on improvement as opposed to competition.

 

Well I like my car the way it is, I was planning on running the pump gas tune since its a bit more mild. The car is in SM and its to heavily modded to scale it back a few parts to get into a lower class.

As competitve as I want to be I have no dillusions for this season being my first. I've been in Iraq for a year, droped 22k on modding it out while here and only got to taste it a little bit on R&R. I know I need more seat time then anything but unfortunatly seat time is the only thing I cant get right now.

I just wanna have fun learn the car do my best so I can come back the following season and apply everything I have learned from this coming season to it. With that said if I do happen to do well then al lthe better.