2020 STU Discussion
Jul 7, 2020, 04:32 PM
#151
I've driven both STU Evo 8 s and STU-ish EVO Xs. I did notice the Evo X rotates really nicely mid corner and on corner exit, thanks to S-AYC. It's comes in very handy in a sweeper. However I don't like the Evo X in slaloms because of S-AYC. S-AYC would cause the car that initiated a turn to keep turning and it seems the S-AYC system would get confused during quick direction changes and would try to keep the car turning when you are trying to reverse direction. That being said, I wonder if that could be fixed with a diff ECU flash. Has anyone looked at the new STU rules proposal? Proposal #28321. I'm liking what I'm seeing for the most part, the only thing I would change would be the tire size recommendations.
STU (AWD & RWD forced induction)..................................................295 STU
(RWD N/A & FWD).................................................................285 315
be changed to:
STU (AWD, & RWD mid-engine/ rear-engine)...................275
(RWD forced induction) ..................................................285
(RWD N/A & FWD)................................................................295
I think the Porsche Caymen would be too much of an overdog if allowed to run 315 wide tires. Plus I think the Evo X will actually become a competetive car in STU with 275 wide tires.
STU (AWD & RWD forced induction)..................................................295 STU
(RWD N/A & FWD).................................................................285 315
be changed to:
STU (AWD, & RWD mid-engine/ rear-engine)...................275
(RWD forced induction) ..................................................285
(RWD N/A & FWD)................................................................295
I think the Porsche Caymen would be too much of an overdog if allowed to run 315 wide tires. Plus I think the Evo X will actually become a competetive car in STU with 275 wide tires.
Jul 28, 2020, 01:51 PM
#152
It is my understanding it can fit 285 up front and 315s (right diameter) in the rears. We have a really good Cayman driver locally who has trophied at Nats. Him and I went back and forth locally in our CS days. He's easily one of the fastest cars in STU locally with 265s. That car will get faster with 285s square.
Jul 30, 2020, 06:27 PM
#154
I'm looking to build up an Evo for STU either this year or next. My heart wants an IX but it sounds like the X might be the better option with the new rules. My questions is which has the potential to be faster, the SST or the 5-speed? A lot of my local events benefit from launch control (I also do a local "track attack" series).
1. Evo IX or X for 2021+ STU?
2. SST or Manual on the X?
1. Evo IX or X for 2021+ STU?
2. SST or Manual on the X?
Jul 30, 2020, 07:09 PM
#155
For an STU build I think I might go for an EvoX. Front weight isnt much more than an 8/9 and most its extra weight is on the back end. Being able to fit more rubber and make a little more power with the STU rules puts that one as my choice.
If I was trying to win Nats, I would pick a manual. If I wanted a mixed use car, SST would be the way to go for max performance but expect to need it built.
If I was trying to win Nats, I would pick a manual. If I wanted a mixed use car, SST would be the way to go for max performance but expect to need it built.
Jul 31, 2020, 07:56 AM
#156
Jul 31, 2020, 08:25 AM
#157
For autocross, its the weight. You only need to get the car in 2nd and leave it for almost all courses. For pro-solo the timing of a manual from other cars seems to be more consistent than the DSG guys. I know some cars you can only sit on the launch control a second before it deactivates and it becomes a hassle with trying to launch.
Also, I dont know if the things thats needed to make the DSG reliable is class legal for STU.
Also, I dont know if the things thats needed to make the DSG reliable is class legal for STU.
Aug 3, 2020, 10:36 AM
#158
I agree with Dallas. I would only go the manual route for the Evo X.
As noted above in a previous post I made, that transmission is unable to handle even minor boltons like STU would incorporate, before it overheats and starts getting wonky. The one I had a couple runs in started slipping, trying to power out of turns by its 2nd run. To describe it, it felt like massive amounts of turbo lag, but it was simply the transmission not being able to put the power down to the ground. Granted this is just my experience, but two other locals with Evo X MR's experienced the same troubles. One was basically stock too.
As noted above in a previous post I made, that transmission is unable to handle even minor boltons like STU would incorporate, before it overheats and starts getting wonky. The one I had a couple runs in started slipping, trying to power out of turns by its 2nd run. To describe it, it felt like massive amounts of turbo lag, but it was simply the transmission not being able to put the power down to the ground. Granted this is just my experience, but two other locals with Evo X MR's experienced the same troubles. One was basically stock too.
Aug 4, 2020, 05:45 AM
#164
13.2.H, it's legal in street class
Driver restraints as outlined in Section 3.3.1 are allowed. Seats may not be cut to allow for the installation of alternate seat belts or harnesses. Passive restraint systems may disabled but may not be removed. Removeable seat headrests may be repositioned using the original mounting hardware only if the OE components permit it with no modifications. This includes removing a headrest and reinstalling it backwards. A horizontal “harness bar” may be used as part of the installation hardware for allowed driver restraints provided it has no more than 2 attachment points to the chassis and is bolted at those locations. A C-type harness bar may also be used. It may have 4 bolted attachment points to the chassis (2 primary and 2 supporting connections to resist rotation). Truss-type harness bars with more than two (2) attachment points are not allowed.
