Yeah that was with a Fuel Lab FPR... No matter what, couldn't dial it down. 70psi was the minimum...

 

I would have bet anything there was going to be massive overrun. The reason is that I was seeing 16 psi higher pressure at the fuel pump outlet of the pump carrier than at the rail when I was running peak flow on a W255 with the stock fuel supply line. This is due to the flow restriction of the stock fuel supply line. Considering that the stock return line is even smaller, I can't understand why there isn't massive backpressure on your fpr causing the rail pressure to rise correspondingly. Your result doesn't make sense, but I guess I can't argue it, and great that it works.

 

548/459
Mods are
2.3L
Mitsu 2.4 crank
1400HD 2 pistons
Eagle rods
ARP main studs
ARP L19 head studs
S1 cams
SS valves
Skunk2 intake manifold(Curt Browns old one)
Skunk2 TB
Skunk2 fuel rail
Spoolingup COP
Cbrd EFR 7163 turbo kit
JMF 4in intake/perrin filter kit
fic bluemax 2150
Buschur test pipe and cat back.
ACT flywheel and ACT XTSS clutch
grimmspeed 4bar
SD tune
ETS 3.0 intercooler kit
Boost was at 26-27psi

 

That's nice. You definitely could have made a lot more TQ, but I'm sure you were keeping it reasonable to hold the motor together.

 

Not sure Aaron did the tune. He knows I'm fine with pushing the car.
I may do a log and add some timing

 

Can I get a ride some time? Maybe this weekend?? :-) Powerband is very similar to my 3B, so I'm curious to see if the transient response is much better than the 3B.

 

Also boost and torque spikes are terrible for anything other than straight line stuff.

 

Sure. I added you to pdx evo's just send me a PM Brian Brummell. I'm at the air show tomorrow tell around 4 so anytime after that or Sunday. All I'm doing is installed a 7163 on my friends evo X

 

We wanna review snapchat it or something

 

is this on e85?

 

Yep it's on 🌽

 

I have to say after just installed a 7163 on my car
And one on a friends X it seems this turbo is a lot of hype.
Don't get me wrong I like the turbo but I don't think it is that
Great. They seem to have big issues with back pressure. They don't spool as
Fast as every one was thinking they would. If I had to do it all over again I'm not
Sure I would do it again. I believe BW needs to look at the design of the turbine housings and make a change

 

You talk about how they don't spool as fast as you thought but you put a SS manifold on your car so I'm confused as to why you'd do that if quick spool was one of your goals.

Full Race makes a TS manifold for the 7163.

 

Interesting.

The turbo was aimed at the more track oriented crowd (quick transient response).

Any data to support the back pressure argument?? Also, according to the BW matchbot and MAP, this is a theoretically a 500~520 AWHP turbo max, so considering the fact that you are making almost 50+WHP outside of it's operating range, I am not sure why you are complaining about back pressure and spool . EDIT: I missed the dyno sheet above......

I saw the comments you made in the BW EFR thread. Not knocking your opinion as quiet frankly, you may have had something else in mind when it came to this turbo

 

To add to this, his car is definitely falling off the cam after 7000rpm. The torque drop is often associated with backpressure. While both affect high rpm power, if you can keep boost flat, you generally are not at the limit of the turbine/housing. I'm not sure this is where his argument stems from, but I thought I'd toss that out there.