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Discussion Starter · #1 · (Edited)
Warning: LONG post!

Thought I would post this up here to share some of my thoughts on my experience so far with with autocrossing the Elantra Sport. I do have experience with autocross in the past with multiple vehicles (Miata, Sentra mainly) and have only run two events to far in the ES. For reference, the car has the following modifications that are relevant to this review:



  • Yellowspeed Racing Coilovers (7k front / 5k rear - shocks adjusted to 28 clicks all around)
  • SXTH Element 22mm rear sway bar
  • Pierce Motorsports 4-point tie-bar
  • Pierce Motorsports stainless brake lines
  • KDM Tuners slotted rotors
  • Porterfield R4S brake pads
  • XXR 527 18x8 +45 (custom offset)
  • Firestone Firehawk Indy 500 235/40/18
First things first, not having a limited slip differential is very noticeable and sometimes a bit frustrating depending on the size and tightness of the course. In the first video below the course was a bit tight so there were several instances of one tire spinning on exit. In the second video it was a much faster course with only a couple places where it was a problem. Pierce Motorsports does offer a LSD made by Cusco for around $1,400. If that is something you have the means to purchase I would highly recommend it if you are planning on doing any sort of autocrossing. I also do a bit of canyon carving and it is not noticeable there. Unknown how much it costs to install it but I am sure it's not cheap. Worth it in the end but an expensive proposition for sure. You also risk voiding the warranty on the transmission so keep that in mind.

The tires are great, I have absolutely no complaints about them. When I bought them I was looking for something that would provide a good amount of grip without wearing down too quickly. I know those are counter productive to each other but some middle ground was preferred and the treadwear rating of 340 is perfect. They are actually a re-branded Bridgestone RE-003 and are available for a very reasonable price. I paid $125 each for 235's. Great amount of grip, very little noise on the limit and super predictable.

The coilovers have been pretty good since a couple issues were worked out. Their base system was too low for my tastes so I requested some changes and they made it happen. Props to Donald at YSR USA for the excellent service. The first event I ran them at 26 of 33 on all four corners, then went up to 28 for the last event. They do get pretty stuff at those levels so I would not recommend that for daily usage. (I run them at 21 daily) At the current ride height I have issues with rubbing in the front during hard cornering or when hitting sudden bumps (bridge transitions, etc) So I have talked to Donald and will have some 8k/7k spring on the way shortly. Doing so I may not have to rely on the stiff shock settings as much and hopefully minimize the rubbing, which does come into play during autocrossing. They've performed well in competition. Looking forward to getting the stiffer springs.

For the sway bar, highly recommended. In fact, one of the first modifications you should do to the car. There are 19mm bars out there that will basically do the same thing, but I think the 22mm bar suits the car better. I have not had any instances where the rear stepped out too much and it rotates quite nicely. Some lift off oversteer can be induced at the limit and it is very controllable.

All told, with the tie bar, coilover settings, rear sway and tires the car is very quick and predictable while dodging cones. Left to right transitions are instantaneous and it's very easy to quickly point the car in the direction you need it to go. I've had a few time where I was sure I was going to hit a cone and with some trick braking and steering work I was able to avoid them. I feel the multi-link rear suspension plays into this a bit. The car is very capable and could surprise some people. During the last event I was setting fast times and not only was the announcer telling people they should buy a Hyundai if they want to go fast, but a few people actually came up to me that were more than impressed and asked about the car.

Install a LSD and put some semi-slicks on it and you could be a real terror out there... :cool:



 

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An LSD would make this car drive at the limit sooo much better. I鈥檝e been thinking about getting the rear sway bar for a while now.... I might have to just pull the trigger on that one
 

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Discussion Starter · #6 ·
An LSD would make this car drive at the limit sooo much better. I鈥檝e been thinking about getting the rear sway bar for a while now.... I might have to just pull the trigger on that one
Do it.
 

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I peeked at the results. Nice job. I'm hoping to try an event in HS--also using the Indy500s.



I have not been out to an event in 2 years--my kids have lots of weekend obligations in sports. Generally I have a full-prep FSP car to use, but on an open course the ES could do pretty well, with just tires and a RSB, and testing that theory would be fun.
 
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Discussion Starter · #8 ·
I peeked at the results. Nice job. I'm hoping to try an event in HS--also using the Indy500s.



I have not been out to an event in 2 years--my kids have lots of weekend obligations in sports. Generally I have a full-prep FSP car to use, but on an open course the ES could do pretty well, with just tires and a RSB, and testing that theory would be fun.
I wasn't sure where to put the car and after a chat with a friend who has a few national championships under his belt we decided STH was best. Hopefully the car is legal with the mods it has lol. The tires are great for the price, will be purchasing another set in 245 this time.
 

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I wasn't sure where to put the car and after a chat with a friend who has a few national championships under his belt we decided STH was best. Hopefully the car is legal with the mods it has lol. The tires are great for the price, will be purchasing another set in 245 this time.
You could run STX as well--I think that is the more "natural" fit for the car--if you look at the "catch all" section of the allowed cars. STX is for sedans/coupes with forced-induction under 2 litres.

I have 225 Indy500s on 7.5 Veloster wheels--the tires seem to run narrow for the size, so I agree that the 245s would be good. I'd consider 235/40s myself next time.

That said--if you get "serious" about this, you'll want to step up to Rivals/RS4/RE71 etc---on 9's. It will be a noticeable jump over the Indys....at the expense of wear. You are probably leaving a second on course with the Indys (on a 60ish second course). Look at the PAX results--if you can get within 2 seconds of the top guys on PAX (again on a 60 second course) you'll be in some very good company.
 

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Discussion Starter · #10 ·
You could run STX as well--I think that is the more "natural" fit for the car--if you look at the "catch all" section of the allowed cars. STX is for sedans/coupes with forced-induction under 2 litres.

I have 225 Indy500s on 7.5 Veloster wheels--the tires seem to run narrow for the size, so I agree that the 245s would be good. I'd consider 235/40s myself next time.

That said--if you get "serious" about this, you'll want to step up to Rivals/RS4/RE71 etc---on 9's. It will be a noticeable jump over the Indys....at the expense of wear. You are probably leaving a second on course with the Indys (on a 60ish second course). Look at the PAX results--if you can get within 2 seconds of the top guys on PAX (again on a 60 second course) you'll be in some very good company.
My problem is that I am on a single set of wheels and I chose the Indy's because I wanted grip but also tire life as I daily on them. In the long term a second set of wheels would be nice but out of the budget currently. Depending on how things go I might step up to a 200 treadwear tire, most likely the Nexen SUR4G but stay 235/40.

A quick read on the Street Touring rules automatically hits a snag for me, rear spoilers only allowed if they are available from Hyundai in the US. I do have an OEM replica spoiler but I believe they are only sold as a factory accessory in Canada. I also have a 2nd cat delete. Might be able to get away with the spoiler but not sure about the missing catalytic converter. All else matches up perfectly. But now I wonder about the differences between STX and STH.
 

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My problem is that I am on a single set of wheels and I chose the Indy's because I wanted grip but also tire life as I daily on them. In the long term a second set of wheels would be nice but out of the budget currently. Depending on how things go I might step up to a 200 treadwear tire, most likely the Nexen SUR4G but stay 235/40.

A quick read on the Street Touring rules automatically hits a snag for me, rear spoilers only allowed if they are available from Hyundai in the US. I do have an OEM replica spoiler but I believe they are only sold as a factory accessory in Canada. I also have a 2nd cat delete. Might be able to get away with the spoiler but not sure about the missing catalytic converter. All else matches up perfectly. But now I wonder about the differences between STX and STH.

https://dk1xgl0d43mu1.cloudfront.ne...treet_touring_category_draft_d.pdf?1484176131


I believe that as long as you have a cat, you're good. I would not get too worried about the spoiler unless you go to Nationals--and even then that would be a weenie protest, IMO. Unless you're in the trophies at Nationals or maybe a Tour, it's unlikely that you're going to encounter issues.
 

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Discussion Starter · #12 · (Edited)
Ran the first event of the year (for me, 2nd official) yesterday and the car did great. 4 runs wasn't enough time to get a handle on the changes I made (stiffer springs, more camber, wider tires) so for the next event I will definitely pay the extra $10 for more runs. (which are timed but not official) Currently trying to figure out how to make an LSD work financially. I struggle with it now and I have a tune on the way which will make it worse.

 

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Ran the first event of the year (for me, 2nd official) yesterday and the car did great. 4 runs wasn't enough time to get a handle on the changes I made (stiffer springs, more camber, wider tires) so for the next event I will definitely pay the extra $10 for more runs. (which are timed but not official) Currently trying to figure out how to make an LSD work financially. I struggle with it now and I have a tune on the way which will make it worse.

How much power is your car making? Car seems to respond really good when you accelerate!
 

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Discussion Starter · #14 ·
How much power is your car making? Car seems to respond really good when you accelerate!
Not much more than stock. All I have for power mods are a 2nd cat delete, downpipe back exhaust with two mufflers and a K&N filter in the stock airbox.
 

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I peeked at the results, Jason. You are doing well considering where you are on the learning curve, both for you and the car. Keep up the good work. ABSOLUTELY buy all the "fun runs" you can afford to take--there is no substitute for seat time in autocross. If you dont already have one, get a garden sprayer and soak the tires down between runs--especially in AZ in the heat. Unlike Hoosiers etc, street tires will have a fall off in performance with too much heat.
 

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Discussion Starter · #18 ·
I peeked at the results, Jason. You are doing well considering where you are on the learning curve, both for you and the car. Keep up the good work. ABSOLUTELY buy all the "fun runs" you can afford to take--there is no substitute for seat time in autocross. If you dont already have one, get a garden sprayer and soak the tires down between runs--especially in AZ in the heat. Unlike Hoosiers etc, street tires will have a fall off in performance with too much heat.
Learning curve with the car for sure but I've done this for a long time. Just had a ~10 year break. :p I do plan on getting a sprayer. Wasn't in a rush to do so at the moment since our highs have been in the 50's lately. A sprayer and an air tank are on the list.
 

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Discussion Starter · #19 · (Edited)
Most recent event. Ambient temps were low 80's but the intake temps were crossing 150 degrees at times. Tried my best to bring it under control with spraying ice water on the intercooler but it didn't help much. Stock intercooler has been replaced so hopefully at the next event things are better.

 
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