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Old 04-22-2016, 12:50 PM   #36
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Cool...I think in his situation, he'll probably be pretty happy, since it doesn't sound like a max-effort build is what he's looking for.
Yes sir and should my father down the road decide he would like a bit more performance out of it, I'm confident he would pull the trigger on a VMP tune for it. After talking with some other Roush owners, VMP tune netted around 100 HP over the Roush tune.

I would imagine there is a bit of difference between a stock 5.0 and a blown 625 5.0. Ha ha



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Old 04-22-2016, 01:17 PM   #37
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That's probably a bit strong. The Roush 50-state-legal stage 1 tune is so bad, you can count on 50-60 horse from anyone else not constrained by emissions regs but the stage 2 isn't emissions legal so the difference between that and another tune won't be as strong. People usually pulley down when they go retune so comparisons aren't always apples to apples.

What should be the focus is overall driveability and power delivery. I find Roush factory cars tend to overpromise and underdeliver at the dragstrip frankly, for their claimed power.
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Old 04-22-2016, 01:41 PM   #38
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I've yet to see anyone that was happy with the Roush tune unfortunately.
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Old 04-22-2016, 01:44 PM   #39
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If you never go to the track a roush tune might satisfy! The roush tune on my stage 1 felt good until I took it to the track. It did 117mph and na cars were faster. The vmp does 123 mph.


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Old 04-22-2016, 02:31 PM   #40
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If you never go to the track a roush tune might satisfy! The roush tune on my stage 1 felt good until I took it to the track. It did 117mph and na cars were faster. The vmp does 123 mph.


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My car 2011 N/A trapped 122 mph.
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Old 04-22-2016, 02:41 PM   #41
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I've yet to see anyone that was happy with the Roush tune unfortunately.
Out of curiosity, what were the people you met unhappy about with the Roush tune?

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Old 04-22-2016, 03:53 PM   #42
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Out of curiosity, what were the people you met unhappy about with the Roush tune?

Just a near stock 3.7
Most have said their cars didn't feel much faster than stock.
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Old 04-22-2016, 03:58 PM   #43
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yeah, and I can concur that the stage one roush cars barely made better mph at the strip than my stock + tune and tire MT82 car. I've seen full exhaust cars mph as well as Roush S1 cars stock.

The problem is the tune is so chicken**** on the timing advance curve that the engine is really behind the blower.
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Old 04-22-2016, 08:11 PM   #44
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My car before the roush it trapped 113 bone stock and only 117 with the stage1. When I was still mt82 and you shift with roush tune the throttle lag was ridiculous. It felt like it waited to open throttle body. They also lower the rev limit to 6800


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Old 04-22-2016, 09:02 PM   #45
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My car before the roush it trapped 113 bone stock and only 117 with the stage1. When I was still mt82 and you shift with roush tune the throttle lag was ridiculous. It felt like it waited to open throttle body. They also lower the rev limit to 6800


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So, Roush doesn't set the rev limiter to 7k? Also, my father got the stage 2 blower 625 HP for his 5.0. I would imagine from a rolling start of 40 or 50 MPH and then slamming on the go pedal, my fathers 5.0 would be far faster with the blower when it was stock.

My father does not track race so he is not concerned with 1/4 mile times, trap speeds, 60 ft times or 0-60 mph. He is more about the boost kicking in and taking off on a merging on ramp. Kind of like roll racing stuff.

He doesn't plan to slam the gas pedal down to the floor from a dead stop and will be keeping the factory 245 45 19 Perelli's

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Old 04-22-2016, 09:06 PM   #46
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The stage 1 rev limit is lowered. I am not sure about stage 2 and up.


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Old 04-22-2016, 09:08 PM   #47
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That isn't smart. He should get some bigger wheels and put at least 285s on there. The torque and instant power here will be quite strong. All season **** radials aren't going to cut it.

Here is how what he's proposing can go wrong in an instant, and this was the "roll racing" kind of idea you are stating, not a dead stop start.

this *was* a V3 Vortech on a MT82 BBP car with a done rear suspension and 255 Michelin PSS:
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2012 Premium GT, Candy Red, Brembo package, 3.73, MT82, Comfort, Tech, et al. Procal tune, Roush UCA, UMI poly LCA, GT500s, Steeda red bracket, Hoosier 28x10x16 bias drags. Best e/t 11.91 at 115.23 RIP
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Old 04-22-2016, 09:17 PM   #48
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The stage 1 rev limit is lowered. I am not sure about stage 2 and up.


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Old 04-22-2016, 09:21 PM   #49
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That isn't smart. He should get some bigger wheels and put at least 285s on there. The torque and instant power here will be quite strong. All season **** radials aren't going to cut it.

Here is how what he's proposing can go wrong in an instant, and this was the "roll racing" kind of idea you are stating, not a dead stop start.

this *was* a V3 Vortech on a MT82 BBP car with a done rear suspension and 255 Michelin PSS:
You think he will need new tires bro? Not saying your wrong but just asking. Do you think the Perelli's will still break loose at 40, plus miles per hour if he floored the pedal? I believe the boost and torque comes on quick with this blower. 3k rpms and boost!

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Old 04-22-2016, 10:18 PM   #50
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ABSOLUTELY. There is no way in hell those **** a/s Pirellis are going to hold this back, even at stage one, much less stage 2.
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Old 04-22-2016, 10:27 PM   #51
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ABSOLUTELY. There is no way in hell those **** a/s Pirellis are going to hold this back, even at stage one, much less stage 2.
So what tires then for that power and its just a street car

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Old 04-23-2016, 11:29 AM   #52
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I have a Roush Phase II in my 2013 Mustang GT and I am very happy with it. It is dependable and does not void the Ford warranty. I read so much about problems after custom tunes being done trying to get the most horsepower out of their engine. Adding 200 more horsepower you may want to invest in brakes to help stop the car. Right now I am upgrading to the 2013 GT500 brake package in front and rear. Enjoy the ride.
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Old 04-23-2016, 11:39 AM   #53
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Well, nothing will really hold it back, even a drag radial, which isn't practical so, get as good as you can. Pilot SuperSports, Goodyear Eagle F1s, Continental DW, etc. With the wheels he has, he's pushing it going much above 255. 9 inch wheels like BBP wheels will take a 285, if you work at it.
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Old 04-23-2016, 12:09 PM   #54
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I have a Roush Phase II in my 2013 Mustang GT and I am very happy with it. It is dependable and does not void the Ford warranty. I read so much about problems after custom tunes being done trying to get the most horsepower out of their engine. Adding 200 more horsepower you may want to invest in brakes to help stop the car. Right now I am upgrading to the 2013 GT500 brake package in front and rear. Enjoy the ride.
Just out of curiosity, why would one need better brakes if one is not track racing it or drag racing it. Just cruising on highway at 75 mph. Just curious.

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Old 04-23-2016, 12:24 PM   #55
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Balance, my friend. If you think Dad is just going to sit at 75 and cruise all the time with a Roush blower on top of a 400+ horse car, you might be misapprehending his curiosity. Lay into it on the highway for a bit of fun, minivan man sneaks into the left without looking and you'll be wanting those 4 piston brakes then. The Brembo brake package definitely helped with escape and evasion several times on my last car. Couldn't save it from it's ultimate fate but, happy I had it and it was a requirement when i bought a replacement s197.


I'll say this, putting the blower on my old MT82 car turned the car from a pretty well-balanced package of performance into essentially, "all engine", if you know what I mean. I already had the Brembo brake package and the suspension + mods to that but, it was so much more power it really did unbalance the car quite a lot. The brakes, shocks, springs and bars on a GT/CS are definitely nowhere near as good as what's on the BBP cars so, they will be stressed even harder with corralling all that extra power.
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Old 04-23-2016, 12:32 PM   #56
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What I find with my automatic and a stage 1 is that if you are cruising and stomp the throttle, the car downshifts and puts it in full power mode. I run drag radials for my street tires and at enough air pressure to keep the tpms off they spin. The factory traction control was designed for 420 hp and does not do a great job of controlling it all. Things can get sketchy in a hurry when the power hits the tires.


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Old 04-23-2016, 12:37 PM   #57
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Balance, my friend. If you think Dad is just going to sit at 75 and cruise all the time with a Roush blower on top of a 400+ horse car, you might be misapprehending his curiosity. Lay into it on the highway for a bit of fun, minivan man sneaks into the left without looking and you'll be wanting those 4 piston brakes then. The Brembo brake package definitely helped with escape and evasion several times on my last car. Couldn't save it from it's ultimate fate but, happy I had it and it was a requirement when i bought a replacement s197.


I'll say this, putting the blower on my old MT82 car turned the car from a pretty well-balanced package of performance into essentially, "all engine", if you know what I mean. I already had the Brembo brake package and the suspension + mods to that but, it was so much more power it really did unbalance the car quite a lot. The brakes, shocks, springs and bars on a GT/CS are definitely nowhere near as good as what's on the BBP cars so, they will be stressed even harder with corralling all that extra power.
I understand that sir! Makes sense to me.

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Old 04-23-2016, 12:50 PM   #58
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If cruising 75 was his bag, he would not have needed to buy a GT in the first place, a nice premium V6 could do that for a lot less money.
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Old 04-23-2016, 01:08 PM   #59
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If cruising 75 was his bag, he would not have needed to buy a GT in the first place, a nice premium V6 could do that for a lot less money.
I have to disagree. I own a GT and I rarely, if ever see 75mph. I have owned several sports cars and muscle cars. I have also had a few street bikes. I really don't see the need to risk a ticket, or an accident because I was out playing on the streets.

So why all of the power? Bragging rights, the feel of the torque as you leave a red light. The sound of a perfectly tuned V8. Plus I can make my way to a few track days and have a little fun.

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