VA has surprising torque relative to it's numbers. Easily spins stock dunlops, yoko V601s and PS4s. Either that or all Houston roads are covered in oil slicks.
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.
21 - 40 of 67 Posts
Strange.VA has surprising torque relative to it's numbers. Easily spins stock dunlops, yoko V601s and PS4s. Either that or all Houston roads are covered in oil slicks.
It's been a while since my ass has been in one, the market put a temporary end to my quest for another, but the va felt strong but didn't feel that much stronger than my 2011.
Mine was ragged though. I beat it to death and the po beat it to death.
It's surface dependent.
I've lit up all 4 on my STI on AutoX launch (OEM Dunlops) numerous times and your 2011 should have been somewhat similar. I doubt I'd have the same experience on a prepped drag surface.
That's a bit of wheel slip mind you, not smoking all 4 tires. My buddy had a Stage 2 2015 WRX with rear Cusco LSD and swaybars - we used to sometimes switch during AutoX. Our two cars launched pretty similar. The rear LSD makes a difference.
I've lit up all 4 on my STI on AutoX launch (OEM Dunlops) numerous times and your 2011 should have been somewhat similar. I doubt I'd have the same experience on a prepped drag surface.
That's a bit of wheel slip mind you, not smoking all 4 tires. My buddy had a Stage 2 2015 WRX with rear Cusco LSD and swaybars - we used to sometimes switch during AutoX. Our two cars launched pretty similar. The rear LSD makes a difference.
Zax, with the Race mode option, you have a fairly sophisticated launch control in the CLA45. The DCT is very quick shifting, too. FWIW, the CLA45 was about as quick as a 650HP / 650 pound feet car on the street. A prepared track was a somewhat different story.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).
Yes, but we were assuming perfect launch and shifting. That was the whole point.
I have some comment about you and me (just kidding). OK, even with NLS (No Lift Shifting), I have never shifted as fast as the DCT in the CLA45. I've never been a great launcher of any car. I never did do a clutch drop on the WRX. I had a thing against clutches and transmission laying in smoking rubble around me. I'm just funny that wayYes, but we were assuming perfect launch and shifting. That was the whole point.
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The DCT's primary advantage comes from a violent launch. Stock for stock, the CLA45 is about 1.4sec faster in 1/4 mile. Add 100hp/~30% to the wrx and that advantage evaporates.I have some comment about you and me (just kidding). OK, even with NLS (No Lift Shifting), I have never shifted as fast as the DCT in the CLA45. I've never been a great launcher of any car. I never did do a clutch drop on the WRX. I had a thing against clutches and transmission laying in smoking rubble around me. I'm just funny that way
Been a minute since I've seen a good ol' bench racing thread.
I despise it that most auto vloggers do this, even the legitimate ones. They wonder why their 0-60 times suck and the car bogs.Full send boys. Flat foot it and dump that clutch.
I have never been into drag racing. I understand a good launch takes a lot of skill as do quick shifts, but the fun is over in a few seconds and has put major strain on your drivetrain. I'm much more interested in the midrange power...the type you use when you are racing form corner to corner. The VB chassis handles very well and it's a lot of fun to drive.
My tuner shifted my power band up a bit so there is less strain on the engine at lower rpms. Once I get into 3rd and 4th gear right now the power feels amazing, but I'm having a little difficulty when I start. I am trying to find a place where I can get help learning to drive it better but I haven't found a good spot yet. I always felt pretty good at driving my car but since the tune I've been feeling turbo lag a lot more in early gears and I want to improve on that. I trust my tuner did a good job so I think it's just driver mod.I have never been into drag racing. I understand a good launch takes a lot of skill as do quick shifts, but the fun is over in a few seconds and has put major strain on your drivetrain. I'm much more interested in the midrange power...the type you use when you are racing form corner to corner. The VB chassis handles very well and it's a lot of fun to drive.
I'm trying to make sense of that.
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.
Are you throwing any codes With your ETS j pipeI 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'm getting ready to do the same thing and grim speed stop making their cat back.
No issues so far, I got the GESI one and they told me that it should have no issues with codes or inspections.Are you throwing any codes With your ETS j pipe
I'm getting ready to do the same thing and grim speed stop making their cat back.
I'm interested in hearing the results. As I understand it, even the GESI cat isn't clean enough to not trigger a CEL (or at least readiness monitors) which is why Cobb abandoned that route and went with the NEXTGEN staged tunes.
YMMV. Individualized tuning may improve outcomes.
YMMV. Individualized tuning may improve outcomes.
Interested as well, I'm putting together a parts list for when I hit 40k miles this year and the j-pipe and flex fuel are the biggest problems. Everything else has a good solution and even the flex fuel from Cobb is supposed to be out by end of this year.
Do you expect this could change for me over time? Maybe the tune did help but they told me it wouldn't be an issue. I had the tune done by JR at Prime Motoring in NJ.I'm interested in hearing the results. As I understand it, even the GESI cat isn't clean enough to not trigger a CEL (or at least readiness monitors) which is why Cobb abandoned that route and went with the NEXTGEN staged tunes.
YMMV. Individualized tuning may improve outcomes.
No it shouldn't change over time after the first 2 months or so. Any problems would show up quickly.
I never understood the argument about catalyst triggering CELs when the same one meets euro6 in other applications. It cleans up leftover hydrocarbons. A good tune will minimize unburned HCs and post cat exhaust will be clean enough not to trigger a CEL off O2 sensor readings.
GESi makes euro6 compliant cats for some cars so the basic catalyst might not be the issue. Cobb still sells GESi downpipes for older EJ engines and Mazadspeed3. The j-pipe and VA downpipe probably had other issues.I'm interested in hearing the results. As I understand it, even the GESI cat isn't clean enough to not trigger a CEL (or at least readiness monitors) which is why Cobb abandoned that route and went with the NEXTGEN staged tunes.
YMMV. Individualized tuning may improve outcomes.
I never understood the argument about catalyst triggering CELs when the same one meets euro6 in other applications. It cleans up leftover hydrocarbons. A good tune will minimize unburned HCs and post cat exhaust will be clean enough not to trigger a CEL off O2 sensor readings.
This is true, but you said it yourself -- the catalyst cleans up unburnt hydrocarbons and oxides, but compliance is a total system thing. The engine design and state of tune plays a part too.I never understood the argument about catalyst triggering CELs when the same one meets euro6 in other applications. It cleans up leftover hydrocarbons. A good tune will minimize unburned HCs and post cat exhaust will be clean enough not to trigger a CEL off O2 sensor readings.
Subaru engines need to be tuned much richer than other manufacturers and so there are simply MORE hydrocarbons to clean up in the tail pipe. NOx emissions are correlated to EGT and combustion temperatures which also tend to run higher in Subaru engines than other manufacturers. I'd expect the FA to be much easier to clean up. The EJ was limped along for 30+ years and due to various design reasons (I won't get into them here) will be harder to clean up than an FA.
There's rumor that the 2019+ STI (+ 2018 Type RA) with the RA block is the most difficult in this sense. Whether this is due to the different piston material OR the ECU's state of tune is unclear. There's a certain hilarity in the fact that Subaru finally produced a relatively stout EJ from the factory (Type-RA Block) and yet... because of the shitty downpipe design you can't tune it worth a damn without failing modern emissions.
In my ignorance, I also believe that piston oil squirters would have resolved several issues...
Why do they need to be tuned richer? I can't think of any reason boxer layout would need to run richer than say an i4 or v6. Is it just inadequate or late response from sensors?
The RA thing is definitely ironic. I can see hot pistons causing a nox problem but it shouldn't cause a HC problem. Far as I know, the only way to get oil jets is an HKS shortblock. IAG and outfront don't have oil jets listed on their site.
The RA thing is definitely ironic. I can see hot pistons causing a nox problem but it shouldn't cause a HC problem. Far as I know, the only way to get oil jets is an HKS shortblock. IAG and outfront don't have oil jets listed on their site.
21 - 40 of 67 Posts
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