Depends on the driver.
Determining my Stage 2 WRX speed by comparing to other cars
I recently took my '21 wrx to stage 2: GS Intake, ETS Jpipe, AWE Touring Catback, and a pro-tune. Mustang dynos says I'm 301 whp and 280 tq, and I was told it's about 371 at the crank (about 100hp up from stock).
I am trying to know what kind of 0-60 or 1/4 mile my car would get assuming it was launched well.
I was comparing it to an audi S5 to start. The audi is 354 crank HP, AWD and weights about 600lbs more at 3900lbs. Car and driver says the S5 does about a 4.3s 0-60 and a 12.9s 1/4 mile.
Would it be reasonable to assume, that if launched well, my car would do it a bit faster since it is more hp and lower weight?
I'm unsure how many other factors are involved like gearing and transmission, etc. Any thoughts would be great. It's not super important, I just like to think about these things and am curious how I'd match up.
I am trying to know what kind of 0-60 or 1/4 mile my car would get assuming it was launched well.
I was comparing it to an audi S5 to start. The audi is 354 crank HP, AWD and weights about 600lbs more at 3900lbs. Car and driver says the S5 does about a 4.3s 0-60 and a 12.9s 1/4 mile.
Would it be reasonable to assume, that if launched well, my car would do it a bit faster since it is more hp and lower weight?
I'm unsure how many other factors are involved like gearing and transmission, etc. Any thoughts would be great. It's not super important, I just like to think about these things and am curious how I'd match up.
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13’s if You can Launch it .
I was ready for you, which is why I specifically said "assuming it was launched well". I'm asking about vehicle ability not driver ability.Depends on the driver.
Any idea what a 0-60 would be like?13’s if You can Launch it .
Probably around 4.5, only one way to find out !Any idea what a 0-60 would be like?
ThanksProbably around 4.5, only one way to find out !
And yeah, I know. I'm just not sure I want to put her through that. I guess I could do it going a bit easy and use the AP to check the time, but I really don't want to become another blown up engine sob story.
There is more to fast times than a good launch.I was ready for you, which is why I specifically said "assuming it was launched well". I'm asking about vehicle ability not driver ability.
I suspect you'll probably be a half second faster than the professional driver on professional course of the stock vehicle on a strip.
It's impossible to guess what you'll do based on cars that are not your car. They have different gearing, different power bands, different aero, different transmission.
If you want to know, go find a strip and take a few passes on a test and tune day.
Few passes is a bad idea. Even at stock power on normal road, a proper launch feels like it's going to take out the transmission.
An extra 100hp and prepped dragstrip might finish the job.
An extra 100hp and prepped dragstrip might finish the job.
They want to know, that's how you know.Few passes is a bad idea. Even at stock power on normal road, a proper launch feels like it's going to take out the transmission.
An extra 100hp and prepped dragstrip might finish the job.
If they care enough then the risk is worth the reward.
It's not worth the risk, that's why I'm here. Was just curious what other people's experience might be with similar setups. Most of the threads I'm finding are super old.They want to know, that's how you know.
If they care enough then the risk is worth the reward.
It's literally impossible to guess.It's not worth the risk, that's why I'm here. Was just curious what other people's experience might be with similar setups. Most of the threads I'm finding are super old.
I've seen 600hp vehicles obliterated by 450hp vehicles. A buddies truck runs 6 second 1/8s but his dad in the same truck is .3 faster making it a 5 second truck.
Your car makes reasonable power. You won't beat a hellcat or 911 but don't worry about how fast you accelerate unless it matters to your goal. Advertised acceleration numbers are often times calculated. Car rags use professional drivers in specifically curated settings to give the absolute best possible results.
You won't meet that. You'll need more power to meet it.
Just remember this. The GR sti had a slower 60 time than the WRX. The WRX couldn't beat it in a quarter. None of it matters at the end of the day unless you are competitive.
Here comes the negative bunch …
OK... assuming a perfect launch, perfect traction, and you nail the shifts perfectly.... I'd say that a mid-12s in the 1/4 mile at high 100s would be possible. Something like 12.5 seconds at 110 mph COULD achievable at the drag strip. It'd be similar to a Benz CLA45 AMG which is also a heavily-boosted 2L 4 cylinder in a pretty big heavy street car.I was ready for you, which is why I specifically said "assuming it was launched well". I'm asking about vehicle ability not driver ability.
I don't expect me or you to be able to achieve that, so don't be hard on yourself if you don't.
As for 0-60 time... no idea. I learned long ago that measurement is totally bogus and means basically nothing but advertising cars to the average consumer (signed: an average consumer).
This may or may not help...
If you absolutely need to compare acceleration between two cars and it must be only one number, the 1/4 mile trap speed is probably the best way to do that. A VA WRX will usually run about a 101-102mph trap speed with a good driver in good conditions on average street rubber. An 8mph increase in the trap speed is pretty significant.
If you absolutely need to compare acceleration between two cars and it must be only one number, the 1/4 mile trap speed is probably the best way to do that. A VA WRX will usually run about a 101-102mph trap speed with a good driver in good conditions on average street rubber. An 8mph increase in the trap speed is pretty significant.
I never expected to get the ideal 0-60 myself, but the though of knowing it just makes me enjoy the car more. So if I know that abstract, calculated, idea of a 0-60 time for my car stock is ~5.2, then I like the car even more having an idea that the abstract, calculated, idea of a 0-60 is like 4.5 or so, even though I will never set out to achieve it. It's just something that affects how I think about the car and -I guess, the pride I take in owning it. I think that's probably what a lot of the guys come to these forms looking for, though they never really word it that way. And then to a very technical person like yourself, you don't like it because you would only want to answer with a specific measured value.It's literally impossible to guess.
I've seen 600hp vehicles obliterated by 450hp vehicles. A buddies truck runs 6 second 1/8s but his dad in the same truck is .3 faster making it a 5 second truck.
Your car makes reasonable power. You won't beat a hellcat or 911 but don't worry about how fast you accelerate unless it matters to your goal. Advertised acceleration numbers are often times calculated. Car rags use professional drivers in specifically curated settings to give the absolute best possible results.
You won't meet that. You'll need more power to meet it.
Just remember this. The GR sti had a slower 60 time than the WRX. The WRX couldn't beat it in a quarter. None of it matters at the end of the day unless you are competitive.
Thank you though, I think my car also doesn't hit 60mph in second gear, so I know that 0-60 isn't the best measurement for how fast it is since there are other cars that can do that but are slower.
Thank you, this is exactly what I was looking for.OK... assuming a perfect launch, perfect traction, and you nail the shifts perfectly.... I'd say that a mid-12s in the 1/4 mile at high 100s would be possible. Something like 12.5 seconds at 110 mph COULD achievable at the drag strip. It'd be similar to a Benz CLA45 AMG which is also a heavily-boosted 2L 4 cylinder in a pretty big heavy street car.
I don't expect me or you to be able to achieve that, so don't be hard on yourself if you don't.
As for 0-60 time... no idea. I learned long ago that measurement is totally bogus and means basically nothing but advertising cars to the average consumer (signed: an average consumer).
While I have you here, could you explain this to me:
I assume that when people generally launch their cars and test their speeds, they are getting to a high rpm and them dumping the clutch. This sounds like is primarily what makes it so dangerous for the car because it is sending so much shock to the rods, etc. If someone instead just gives it the beans in a normal acceleration, starting from 0 RPM, is this substantially less bad for the car since there isn't as much shock. The latter here is the kind of thing I don't mind doing because it doesn't seem as damaging to me, but I would never dump the clutch like in the first example.
Very little concern to the engine - more of a concern to the drivetrain.Thank you, this is exactly what I was looking for.
While I have you here, could you explain this to me:
I assume that when people generally launch their cars and test their speeds, they are getting to a high rpm and them dumping the clutch. This sounds like is primarily what makes it so dangerous for the car because it is sending so much shock to the rods, etc. If someone instead just gives it the beans in a normal acceleration, starting from 0 RPM, is this substantially less bad for the car since there isn't as much shock. The latter here is the kind of thing I don't mind doing because it doesn't seem as damaging to me, but I would never dump the clutch like in the first example.
The rods see far more momentary acceleration and jerk (yes, this is an actual term) from regular engine operation than what can be supplied by the drivetrain.
No, real life isn't NFS. Your launch is traction limited, you give it the beans at ~4-5k rpm, and slip the clutch while listening to tires (sound, steering feedback & seat of pants). You adjust clutch slip to keep tires at 5-10% wheelspin until they hook up. Then at redline, slam into 2nd which will grind the synchros, and dump the clutch while hoofing it. Your car will do exactly 62mph / 100kph at redline, take a wild guess why subaru did this.I assume that when people generally launch their cars and test their speeds, they are getting to a high rpm and them dumping the clutch. This sounds like is primarily what makes it so dangerous for the car because it is sending so much shock to the rods, etc. If someone instead just gives it the beans in a normal acceleration, starting from 0 RPM, is this substantially less bad for the car since there isn't as much shock. The latter here is the kind of thing I don't mind doing because it doesn't seem as damaging to me, but I would never dump the clutch like in the first example.
You can expect 10-15 good launches before you need a new clutch. And maybe double that before you need a new gearbox. Even if you only do it a couple times, that can still do serious damage to 2nd gear synchros.
Full send boys. Flat foot it and dump that clutch.No, real life isn't NFS. Your launch is traction limited, you give it the beans at ~4-5k rpm, and slip the clutch while listening to tires (sound, steering feedback & seat of pants). You adjust clutch slip to keep tires at 5-10% wheelspin until they hook up. Then at redline, slam into 2nd which will grind the synchros, and dump the clutch while hoofing it. Your car will do exactly 62mph / 100kph at redline, take a wild guess why subaru did this.
You can expect 10-15 good launches before you need a new clutch. And maybe double that before you need a new gearbox. Even if you only do it a couple times, that can still do serious damage to 2nd gear synchros.
My 11 wouldn't really chirp with the mpss even when I launched the shit out of it. So I just feathered it until I was right there on that limit of engine bogging.
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