Now peak number-wise your at 824 at 20psi and Markski's at 871 at 21.5.
I dont know what the area under the curve is like but at 21.5 psi, it seem like your gonna be right with Markski. Is this because of the injectors maxxing out?
Are there any plans for custom larger injectors?

 

If they could get the TQ to stay up it would obviously make quite a bit more power. Really hard to say what's doing it and I can't even speculate without seeing a datalog of the a/f, timing, boost reference, and preferably backpressure and EGT.

Are you all using the same size hot sides?

Sounds dumb, but are you guys using cats?

What size downpipes and size/type of muffler?


Granted a very extreme example... on a Viper making 25psi, going from 3" full exhaust with mufflers (no cats) out the back, to opening a 4" dump picked up over 200rwhp and made it spool quite a bit quicker.

Letting it breathe post turbine can be worth huge HP if you know how to tune around it.



NIIIIIIIICE HP numbers DX.

 

Damn Scott!

Them some serious numbers! Congrats!

 

Yup, knew the 30's could do it...and quick response to boot!
Awesome numbers Bro!

 

So far, the car has made the following at the below listed boost levels:

0.77 BAR (11.3 psi): 589 rwhp / 561 rwtq
0.86 BAR (12.5 psi): 596 rwhp / 575 rwtq
1.00 BAR (14.5 psi): 693 rwhp / 641 rwtq
1.03 BAR (15.0 psi): 707 rwhp / 664 rwtq
1.10 BAR (16.0 psi) :735 rwhp / 680 rwtq
1.24 BAR (18.0 psi): 782 rwhp / 722 rwtq
1.31 BAR (19.0 psi): 813 rwhp / 73? rwtq (waiting on graph)
1.37 BAR (20.0 psi): 824 rwhp / 76? rwtq (waiting on graph)

For the sake of comparison and to show just how much my heads and cams are helping; Jamie's car with the same intake, turbos and exhaust that I have (but on stock internals) made 715 rwhp at 1.5 BAR (21.75 psi).

Here's the 1.02 BAR (15 psi) graph....



And here's the 1.1 BAR & 1.24 BAR (16 & 18 psi) graph...

 

Nice work Scott! When do you get to pick it up?

 

Geetee - No plans on swapping injectors at this time.

Vicious - Same hot sides, I'm not running cats (I don't think Jamie is, either), custom Protomotive muffler (with 3" piping, I believe).

Thanks, Alex!

Thanks, Andrew! Need to take you for a ride one of these days, bro.

 

Thanks, Luis. Still tuning her. Need to get to at least 1.5 BAR before we call it quits. Hopefully even higher if the turbos still have anything left in them.

 

Congratulations Scott. How much torque did it make? Do you have a dyno graph?

Craig

 

Craig, no graphs for the 19-20 psi runs yet. He just shot me the numbers in a quick email and went back to tuning. Said it was 824 rwhp / 760'ish rwtq.

He did say that he needed to swich to C16 at this level, though. He said at 19-20 psi, the car was starting to get knock-sensitive. He said he likes C16 MUCH better.

 

Definitely, that would be a huge treat to say the least, thanks!

You have any track dates starting to line up?

 

Are you planning on spinning it to 8000rpm?

 

Not sure, bro. Won't know until tuning is all complete.

 

I am feeling the additional lead being poured in as we speak......

 

You're telling me. I have to get up at 0530 tomorrow but I'm too excited to go to sleep!