What do you think autox gurus?

trying to stay out of streed mod or BSP. please give me a hollar if you notice anything that would be not allowed.

STU allows no boost changes so a mbc is out of the question.

is a schroth 4pt harness legal? dont see why not rule dont specify so i say yes??

buschur tbe w/hfc and bullet muffler.

245/45/17 falken azenis rt615s still a good choice? i was going to go 255/40 till i decided to shoot for STU which limits you to a 245 tire

rear trailing arm bushings are allowed iirc

springs from gtworx.com they arent on the website yet because they arent out yet.
supposed to perform better than the swifts. for the cost to me its worth a try.

cusco camber plates

rear strut tower bar. probably an ebay bar or an aerosync carbon bar from gruppe-s

whiteline 24mm adj. rear bar and a cusco 21mm fsb but only if i can figure out a cheater way to swap it without completely removing the subframe.

ss brakelines <--in my wrx they made a world of difference. do they help in the evo at all?

i will have an e-flash for my cone filter and tbe and to get that extra hidden hp thats in the stock car.is it possible to tune the basic stuff without a wbo2 or still a no go?

I can have brake ducting. Do you think it would help at all? i could fab it up myself for cheap im just wondering if its worth it at autox speeds


sparknotes:
buschur tbe w/hfc and bullet muffler
gtworx springs
cusco camber plates
rear strut bar
fsb & rsb <--- maybe
trailing arm bushings
falken rt615 245/45/17
schroth 4pt harness <--- legal?
ss brakelines <--- maybe
brake ducting <--- maybe
eflash

is my exedy twin hd going to screw over my plans? i really hope not otherwise itl be the same setup in SM

thanks guys. this should start pretty soon. ill start with the tbe and flash then move on to the suspension.

 

There's a rather large STU prep thread right at the top of this page. Just in case you'd like to read it.
The Exedy Twin will bump you out of STU. Why spend the $ on the clutch? Spend the $ on an Evolution Drivers School, you'll be FAR faster than a clutch will every make you. Brake ducts are only good if you are going to do track days. The harness IS legal. Everything else looks to be in-line with the rules of the class. The Falkens are okay, Bridgestone's are better.

Dave Mac

 

Everything is ok for STU except the exedy and the flash if it modifies boost control in any way.

Of your list just do the tires and a Buschur full turbo back.

If you are on a budget build and want to be locally competitive, I would not do these items, and save the ~$1,200 toward a set of coil-overs instead:

gtworx springs
cusco camber plates (included in some coil-overs)
rear strut bar
fsb & rsb <--- maybe
trailing arm bushings
schroth 4pt harness <--- legal? (personal preference)
ss brakelines <--- maybe
brake ducting <--- maybe:
intake

Buy coil-overs, then:

adjustable rsb if you need it.
another set of lighter and wider rims, 17x9.
fuel and spark engine management.
Optional:
drop in K&N
front pads
race cat from me : )

If you keep the exedy, go to SM and do the same mods except for:

MBC or EBC through a flash or piggyback (optional map for race gas).
Kumho R compound tires for good wear, on 18 x 9.5s
Roll rear fender lip.
Pull the back seat.

Hope this helps.

 

I think you don't have to move to SM with boost control as BSP now allows it.

 

Very true, that would be a better choice - thanks.

BSP is VERY fast out here so I put it out of my mind.

 

BSP isn't that fast out here. Unfortunately, I currently suck, so it might as well be fast.

 

bsp usually is as faster or faster than streed mod here.

 

BSP's index is only .03 behind SM, so it's not like it's a much lower class. I could be in BSP if not for my cams, but I don't care enough to de-mod.

 

Exactly, I couldn't have said it better myself. Seat time will help more than anything. Also, just like Rick said, skip the stock-style springs and save up for coil-overs regardless of what class you end up running. Besides seat time and wheels/tires, thats the next best mod you can do for autox.

 

Listen to Rick (SS RX7 r2) -- his car is pretty well set up. Fastest STU Evo on the East Course at Nationals last year...


Don't invest in anything suspension related until you are running at least single-adjustable coilovers with front camber plates. Don't mess with sway bars, strut bars, bushings, etc. A good coilover setup will make all those other changes drop down into the "noise".

 

And that would be with you driving.

I did have the quickest Evo VIII overall time and on the West Course, Dieman's IX was the fastest Evo though.


Back on topic, you only need:

Coil-overs / adj RSB
TBE
Engine Management
Wheels and tires

My car came in 2nd in ESP with just those mods, and a IX should be competitive in BSP.

 

i have an 8 not a IX.

can i run bsp with the exedy or is that a no doubt SM? its already installed and i REFUSE to do the tranny drop again. haha.

what is a good set of budget coilovers? i dont have the funds to drop like 2k on coilovers. same for R-comps. Im thinking of the rt615s in 255/40/17 since there are allowed for bsp/sm

personally i would rather go TBE+testpipe, mbc, fuelpump, and flash for the go fast part but i was thinking of maybe trying to do a budget stu build but thats not gonna happen.

I will have about a $3500 budget. im going to drive on the stock setup for most of this season.

600$ for the rt615s, 1600 for the buschur/warrtalon package. that only leaves about 1300 for coilovers... any ideas?

 

To truly be competitve, spend all that on the tires/wheels/suspension. The local class leading car here is a BMW with the full GroundControl setup. He's way down on power compared to me, but he's significantly faster on every course.

 

1. Exedy is good for BSP and SM.

2. Buy some used Tien Flex or maybe Cusco, many of us made the same mistake you will be making , so there should be others that are upgrading to better coil-overs. Pay twice later.

3. On stock rims run 255 bridgestone RE01s, they're on sale. Kumho 255 victoracers work well if you wnat to be competitive. Since you are in BSP/SM, get the 18x9.5s when you can, then r tires.

4. I don't understand your engine mod question, same budget build for all classes, except no boost in STU? You can get a used XEDE that has EBC included. Buschur/ Warr is good too.

 

i was under the impression that i can not change the cat to a test pipe in STU, however i can use a racecat?