You could put a smaller restrictor in the line to the wastegate.

 

That's actually a tactic... I remember having the discussion about welding a hole saw or washers in the wastegate side of the O2 housing a few years ago. Car wouldn't be very drivable on the street, but it'd make some good power lol

 

That sounds like what we talked about that on the 3rd & 4th pages. I thought about doing it with a washer or hole saw inserted in the "transformable" part of my downpipe.

But, the more common solution involves using an entirely different downpipe.

 

I have one of those eBay O2 housings with the poorly flowing wastegate side sitting in my garage. I wanted to do a back-to-back comparison with my MAP O2 eliminator downpipe, but I lost all motivation to do that after fighting with the downpipe/O2 housing swap once.

The MAP O2 eliminator recirculated downpipe has a fully separate piece of tubing on the wastegate side that extends for several inches. I always thought it would be fun to weld an O2 sensor bung in to the wastegate tube and then insert a long M18 bolt in the tube to impede the wastegate exhaust flow. A long bolt with a locking nut could be used to adjust the restriction and the bolt could be swapped for a normal plug when you wanted to go back to normal functionality. I don't know if an M18 bolt would even be enough of a restriction, but it would certainly be easier to tune and adjust than the washer or holesaw method.

 

This is why you just put a restrictor in the line to the wastegate solenoid, like the stock one. Just more restrictive. No cutting, no welding, just playing with the pills until you get the boost you want.

 

The difference is one way is legal and the other way isnt.

 

If we could do that in STU, we wouldn't bother with these crazy wastegate obstruction ideas.

The rules don't allow boost control changes, but they do technically allow boost changes secondary to exhaust system modifications.

 

STU rules don't let you use something "like the stock one" that controls the waste gate. You use the stock one or you race in "Street Modified" against trailer queens on race tires.


EDIT: Or you could race in Street Prepared against trailer queens on race tires. The main point of Street Touring is to mandate street tires and milder modifications, and get back the "street" that they lost out of SP before I ever started autocross.

(Or you cheat, and get ridiculed when you're busted.)

I'm tempted to copy and paste the rules from a few pages back, but I have to go to work.

 

It'd be legal in Street Prepared. No need to go all the way to SM.

 

Sm all the things!


edit: Interesting, if you type in all caps it changes it to upper/lower

 

The system didn't want you getting too excited, now

 

Apparently...


Now back to your regularly cheating schedule (STU Thread)

 

I'm not sure how you would get caught. The slight advantage of an extra 2-3psi of boost isn't going to make your car that noticeably faster (visually) on course. But should help you pick up a few tenths all else being equal..




See above...


I would just race the SP class. The LVR region puts all of us Evo's in ASP, the car is super fun at that level. Stock turbo, E85, etc. I would obviously be in SM now, but I've gone to mostly doing track days.

 

I don't care how you would get caught.

Maybe I'm on the wrong forum if someone's always trying to talk me into cheating.

EDIT: On second thought, what do I care? I have the tune I want, and I'm happy.
Peace.

 

Even a few tenths can be a huge difference on an autocross course, though.

But it's not even about whether or not you'd get caught. We go spend all day driving in circles in giant parking lots with our friends because we're out having fun with good friends. Cheating your way to a win against your good friends just wouldn't even be satisfying.

To answer your question: You'd get caught if someone suspected something different about your car and started the protest process. Obviously they'd have to suspect something was wrong, but you'd be surprised at just how observant the national-level competitors can be. There was a famous cheating incident in the past where a driver swapped out his transmission gearset with some illegal parts. Supposedly (or so the legend goes) his competitors noticed that his shift points on course were different from the other drivers in the same car and used that to start the protest process.

ASP is a fun place to be. Definitely a good place to be if you want more power or bigger tires. The downsides are a more difficult PAX modifier, much higher cost to fully prep the car, and you'd be breaking parts more often with all of that extra power. It's all about tradeoffs. And $$$.