Help Hooking on The Street! (Boosted)

[tdstuart]

Need some advice from people who have actually done it! Twin Turbo car, cant hook at 7psi in 1st or 2nd.

Twin turbo 2015 mustang gt. 6r80 trans, 3.15 diff, currently running MT ET Street R 315/50R17 tires.

Car is making about 7/8psi at the top end, boost is a little lazy to come on.
Running tires at about 26 psi when warm.
For suspension I have subframe and diff upgraded bushings, gt350 rear springs, bmr drag front springs.
Car is basically full weight.

No drama when the car spins, it just blows the tire off. Can't do a launch, can't do a first gear roll, and can't do a 2nd gear roll without some good spin.

I'm sure I can do boost by gear/speed or torque control in the tune but I am just worried that I can't even lay down a few psi and I am hoping to turn it up. In a perfect world I would actually be able to make use of my 3700 stall converter and do 2-step/trans-brake but I can't even get off the line just foot braking it to 2k and easing in the throttle.
I did reach out to Kelly and he recommended front/rear coilovers. I wanted to see what everyone else thought and if others have had this issue and then did suspension to solve it or what helped. Thanks!

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[K Myers]

Im currently running Ess with 8-9 LBS I run R2s with no issues im 6r80 also and 3.15s, you might have to much air in tires. I run the BMR Bread and Butter kit, with Eibach lowing spring and Viking inverted double adjustables.

 

[tdstuart]

Im currently running Ess with 8-9 LBS I run R2s with no issues im 6r80 also and 3.15s, you might have to much air in tires. I run the BMR Bread and Butter kit, with Eibach lowing spring and Viking inverted double adjustables.

I could spin my R2s from a launch when na. Are you able to hook all the time? Any 60ft or 0-60 times on the street?

Was there a suspension change that made a big difference or did you do it all at once?

 

[K Myers]

I haven't gotten a 60' time because the all the streets have house on them and the cops are everywhere

 

[NGOT8R]

Try running track pressures (14-18 psi) on the street and see how that does. It’ll be a hassle to run low pressure for traction and then air back up for better handling and wear though.

 

[K Myers]

I could spin my R2s from a launch when na. Are you able to hook all the time? Any 60ft or 0-60 times on the street?

Was there a suspension change that made a big difference or did you do it all at once?

I went with the BMR bread and butter kit with Eibach lowering springs and viking inverted double adjustable. Oh yea it's a convertible and it's heavier

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