I decided a year or so ago that I wont do anymore track time with my Evo. It'll just be an AutoX car until it gets retired and converted back into a street car.

Maybe one day Mitsu will get lead by an enthusiast again and they'll pull an RX7 on us with new production of old parts.

 

yea its all the drivetrain and stock parts that are hard to get. even stuff mitsubishi do still make like crownwheel and pinions can be an 18 month wait. Which sort of forces you down the billet or aftermarket route. i think if your that far down the rabbit hole then youll be pretty insulated. although things like engine blocks are even becoming hard to find.

I do still want to do a supra build from a shell and put a different motor etc in it. Maybe one more good year in the evo try win a championship then sell it and start on a supra

 

The engine is great. Why would you want to change it, as opposed to just doing a different platform?

 

Ironically, I think you're just likely to break something at an autocross as you are a track day. Especially if it's a pro solo and you're launching the car. Autocross is just as hard on the car, just in different ways.

 

simplicity and availability of aftermarket parts really.

Id want to put a traditional sequential or transaxle behind it and im thinking something like a 1jz/2jz or an LS etc.

Even possibly a k20 or 4g63.

That and i can pick up an empty damaged shell much cheaper than i can get a running car

 

I only ever had parts respond questionably at Autocross. With the brutal starts stops and direction changes, it definitely seemed to be tougher on the car than a track day,
The only stress I saw on a car during track days is heat. And even that wasn't a problem; my car managed it perfectly.

 

 

Interesting how in so many different disciplines with so many different platforms, So many of us have so many similarities in the way we build cars. Keep things simple for reliability, only change what you need, keep everything a small as possible and only as large as needed. Dude speaks my language!

 

Finally started tuning my Supra. It's making about 130whp over stock now after a couple days of tuning. I'm currently hitting up against a passive load limiter that is taking the top end down so as soon as I figure that out it should be making a bit more.

One thing is for sure, it sure as hell woke up. The car is a beast now and I probably have about 80whp more or so to go to get to where I want it, and this is just on 93 octane.

I am ramping the boost in so the tires don't just evaporate when I go WOT from low RPM. I also tuned the throttle mapping and it's SOOOOO much better, much more linear feel. There is also a table that loads up boost behind the throttle plate when it sees a shift in requested throttle to help make the car feel more NA when stock. It got a little surgey with the upgraded turbo so I reduced that as well. Car feels fantastic.

Here is a log if anyone is curious: https://datazap.me/u/razorlab/mysupr...1&zoom=121-268

@Lumpy Sticks The Verus splitter clears my driveway exit just fine, unless I don't go slow then it slams into the ground I found out. lol. I also almost annihilated it driving into a gas station. Need to learn it's height limits! hahah. The supra got attention before and I found out the last couple days, it REALLY gets attention now. Perfect for an introvert like me... 🙃

 

Is the ECU's torque logic fairly simple to grasp coming from tuning Ecoboost stuff? I found ecoboost to be fairly easy once you found all the torque limiters

 

So far it seems pretty straightforward. Requested torque turns into requested load turns into requested boost. Fuel tuning is set and forget basically. Boost dynamics is the most complicated but if you understand modern PID systems, it's logical. There is also compressor map tuning that needs to be done when you upgrade the turbo. The closest thing to an actual WGDC table is the compressor map table.

 

Awesome, sounds similar then. Does it use the throttle as torque/boost control similar to Ford as well?

 

Yup, you can see in that log above.

 

Yep got to learn how to pull in to driveways now. Haha. The more sideways you go, the better! Good thing the splitter is strong and can take the hits. I have actually had to make a list of places I cant take the Supra because I cant make it in or out of the lots. I cant even drive it to one of my friends house any more cause he has speed bumps. Almost got stuck on one last time I tried! Just wait, if you get a diffuser, its 10 times worse! Mine is all chewed up already. But ya, adding the wing and splitter really add attention to the car, especially from all the ricer kids.

 

is the engine pretty open to be played with? or is it like most modern cars when it detects youve farted it goes into limp mode.