what mph?

 

Looks like about 80 mph on the 2-3

 

Just going to update this. Last weekend I went 8.0 in the 1/8th leaving off idle 2.1 60 with boost spiking to 17 psi in 1st and then falling to 7.5 psi in 2nd gear and 8.5 in 3rd. 35 psi in the ET streets just wanted to see how they did on street pressure. Got booted for no helmet after that.

Seems like my boost control has been ****. I was running the stock spring in the JGS 50mm wastegate (light spring) with my eboost hooked up 2 port method for max boost. Sensitivity at 60 on the controller. Boost would always spike in 1st then go down in 2nd and third.

So I redid my wastegate. It came with 1 extra spring, a shorter stiffer spring. So I added that spring so now both springs are installed in the gate. I also redid my controller solenoid to the "1 port" method hoping to get tighter control over the boost. I just took it out and on a 2nd gear pull it hit 19.8 psi with the boost controller zero'd out (SP 0, GP 0, Sn 20). So looks like the 2 springs together may be too much. I'm worried if I take it to the track and boost spikes in 1st again I may hit 30 psi and pop the motor. Question now, do I pull the WG again and just install the stiff spring, or run it like it is and hope for the best. I'm planning to take it to the 1/4th either than weekend or the following.

 

Took out the light spring, just running the stiff spring now. It's a steady 17 psi, I like that.

Testing out brake boosting on the street today, I can hit 5 psi before it spins the tires. That's with the ET streets at 35 psi. These OBS brakes may not be as strong as the factory single piston rears. It's debatable. I'm hoping at the track at 15 psi tire pressure and with a good burnout it holds more. Hell, even just getting to positive pressure at the tree will be light years better than leaving off idle.

 

Thats awesome. Are you able to leave at 5 PSI on the street with the radials on there or does it just bake the tires?

It must feel like a monster at 17. What do you expect to get out of it?

 

No it would roast the tires on the street leaving in boost. The 4.10 gears also aren't helping the brakes hold things.

At 17 psi, it pulls like a beast. 8 psi in comparison feels felt like a snail going down the track. If I can leave on 5 psi at the track I expect solid 11s.

 

Video!