0-60 times off on 2011 SHO

[04lss]

Hi,
So i bought my 2011 SHO last thursday.
I tested the 0-60 times yesterday and again today. Yesterday i managed a best of 5.8, Brake bossting with TCC off. Today, from a 2mph roll stop i managed a time of 6.1, then on the second try dead stop i got 6.4 .

What could be causing me to have such lousy times? I bought a SHO hoping to be in V8 Mustang territory, not V6 Camry land. (2015 camry v6 is 5.9 to 60)

The car has a LiverNoise intake on it (wished id noticed that before buying it)
I checked the Boost using torque and i got a "max" of 16 psi, but it usually stayed around 12.5-14
I have no idea if these are standard figures or not. I do know the stock MAP is supposedly limited to 14.5

Id does feel like it pulls some boost on 2nd and 3rd runs and the times support this.

I have virtually no wheelspin unless i brake boost.

I am 300lbs, but considering thats only about 100-120 over the average driver, i shouldnt be able to pull a second off the 0-60 times. especially in a 4400lb car

I am running 87 tonight, yesterday i had most of a tank of premium, however the dealer filled it with 87.
I havent seen any thing saying that i should be running 93.

The trans is a little wonky in higher gears, but its fine 1st -2nd.



Sorry for the long rambling post, but im really disappointed, I bypassed the chance to buy a 335i that i know was clicking to 60 in 5.1. I plan to mod, but i dont want to start off just trying to match stock.

Thanks

 

[SHOdded]

Only note I will make is that if you are getting the boost levels you say you are, then the car most likely has a tune loaded. In which case it could be any level of tune, as there were a multitude for the 2010-12, from mild to wild. Stock would be closer to 8-9 psi.

Check to see if the MAP sensor on top of the intake manifold is 3 bar or not. If it IS 3 bar, you likely need to run 93 all the time.

 

[04lss]

How do I tell if it's a 3bar vs stock?

 

[ridered74]

If you are basing your 0-60 times off torque or a similar app, the times are likely to be way off. Mine was reading in the low 6's, but when I put a camera on my speedometer to record, then stopwatched it while watching video, it was a great deal lower. Probably a second or more difference between the app and real world time.

 

[04lss]

I'm basing the 0-60 on stop watch times, I haven't video tested but I usually get within. 2 seconds

 

[04lss]

That's supposed to be 0.2

 

[SHOdded]

How do I tell if it's a 3bar vs stock?

Part number stamped on it will be different. In the aftermarket, the 2 bar (stock on the SHO) is CX2228, the 3 bar is CX2231. If you have the 3 bar, the OEM part number will be AA5Z-9F479-B or AA5Z-9F479-AB.


The 2 bar CX2228 looks like this

 

[SHOdded]

NAPA Echlin part is likely to be the Ford OEM part as well.

 

[yo tony]

You need to only run 93 ever. Brake boost it to around 2k. That's a heck of a lot of boost for stock. If it is tuned for 93 running 87 is gonna do bad things for you. I would baby it until all the 87 is gone and pit put a couple gallons of 93 in and run that out with easy driving.

 

[krewat]

Even stock, the 3.5L Ecoboost ratings on the Taurus SHO always had an asterisk next to them - "With 93 octane" - I tried 87 in my stock 2013. ONCE. Never again.

It was so much slower I never again did that. Even when it was over $4.50/gal

Using an SCT X3 to datalog, and then taking the logs (with timestamps) and running it through a UNIX script I wrote, I got 5.5 0-60's on my stock 2013. No power-braking, no nothing, just sport mode on the tranny lever.

 

[04lss]

since it hasn't had a full tank of premium since I bought it. im going to run whats in down to empty, add 2 gallons of premium run that out, refill with premium.
My thought at that point is to pull the battery cable, to let the computer reset from any low octane tables (that's how my GTP grand prix used to work)

I emailed LiverNois asking if they could use my VIN to see If they've ever written a tune for it. Im going to check for the 3 Bar MAF when I get home.
The only thin I don't get, if it IS tuned, when I had mostly 93 in the tank it was still pulling 6 seconds to 60,
With a tune, shouldn't it at least be high 4s very low 5s?

 

[SHOdded]

I didn't want to suggest contacting LME as not sure on their privacy policy, but hopefully they can verify.

As far as performance, can you vouch for the maintenance of a used car? Rarely. That's where doing the mainenance is so important so you kinda get a summary of the car's history. Until then, it is speculation, informed speculation maybe but speculation nonetheless ...

 

[04lss]

I didn't want to suggest contacting LME as not sure on their privacy policy, but hopefully they can verify.

As far as performance, can you vouch for the maintenance of a used car? Rarely. That's where doing the mainenance is so important so you kinda get a summary of the car's history. Until then, it is speculation, informed speculation maybe but speculation nonetheless ...

I checked the car fax, it had "scheduled maintenance" reported 5 times during the lifespan.

 

[brucelinc]

With a tune, you should be in the low 4s or high 3s. As others have said, use 93 octane exclusively. If it really is making 16 PSI of boost (which I question) and you are not running 93, it must be pulling a lot of timing to prevent detonation. If it really is making 16 PSI of boost, I wonder if it might another company's tune in it. Livernois typically uses a more balanced approach to tuning than just cranking up the boost. Mine is more in the 13-14 PSI range.

 

[04lss]

With a tune, you should be in the low 4s or high 3s. As others have said, use 93 octane exclusively. If it really is making 16 PSI of boost (which I question) and you are not running 93, it must be pulling a lot of timing to prevent detonation. If it really is making 16 PSI of boost, I wonder if it might another company's tune in it. Livernois typically uses a more balanced approach to tuning than just cranking up the boost. Mine is more in the 13-14 PSI range.

While I was watching it, I saw a brief spike to 15 (the 16 came from torques "Max" boost marker but it looked like it stayed 13-14. ( I don't know how accurate torque is though) Do these cars have a "low octane" table they go to if they detect lower octanes? it could explain it. I know on my old GTP if it detected 87, it went into those table and unless you reset the battery it tool about a tank ful to go back to normal.

 

[krewat]

I'm not sure about the Ecoboost, but the naturally-aspirated motors like the modular 4.6/5.4/6.8 engines just try to advance the timing until they hear a knock from the knock sensor, pull back and stay that way. This learning is done periodically without having to clear the KAM (Keep Alive Memory) either with a tuner or by disconnecting the battery.

On my 2013, as soon as I ran that tank of 87 down to almost empty and put 93 in it, it woke up within a few minutes, it didn't take very long.

 

[SHOdded]

The PCM will pull timing as necessary based on feedback from the knock sensor. Torque should allow you to monitor timing advance or spark advance.

 

[04lss]

Just heard back from LiverNois, they don't track by VIN so, I don't see a definitive way to find if the car has a tune without getting a tuner.

Should I just see if the dealer can re-flash the car to stock?

 

[SilverSH0]

No one has brought this up but maybe it's just driver variation? What was the altitude, temp, and humidity? Just because a magazine says a car will run a certain time doesn't mean the driver is capable of driving the car to it's full potential. I beat a Corvette on the street before and it wasn't because the SHO had faster magazine times than the Vette. It was because he couldn't drive his car to it's potential.

It also sounds like there's a lot of error in the measuring technique. Having error within about 1/4 second is pretty big when you're talking about low 5's being normal and high 5's being bad.

 

[brucelinc]

Very difficult to get an accurate time with a hand held stopwatch and using the car's speedometer to know when you are at 60.

I know it is not everyone's cup of tea but the best way to measure performance is at the track where there is professional timing equipment. Even that can vary greatly depending on altitude, temp, humidity, barometric pressure and wind.