I have just had my power tune but I am ​​​​​​ a bit confused by the values. Running 15psi and everything went well except an apparent lack of power? If anyone could tell me what Im missing that would be great. No rpm on chart but it ends at around 8000rpm. Engine has a very mild port, 3 inch exhaust, front mount, r magic coils.
https://cimg3.ibsrv.net/gimg/www.rx7...6c64092c54.jpg

 

480 Nm of torque which translates to roughly 350 ft-lb does not equate to 286 hp. The dyno measures in torque but calculates the hp from those values.

i had this issue before on a dyno. Ask the dyno guy to overlay torque and hp graph and see whether the 2 curves cross at 5212 rpm

 

So there was no rpm on the Dyno. If I back calculate the torque to hp at 6500rpm I get 400hp but is that torque real or also a guestimate from some other missing input? RPM etc?

 

For a proper calculation and accurate data for the dyno you need to pick up the rpm.
Because that will dictate the calculation results

some dynos you can do without but i am unsure how the calculations are performed
i think it is an approximation with the rpm of the rollers since the ratio is of the 4th gear is 1:1

 

Thanks

 

Peak power = 393rwhp @ 6,213rpm

Nice power and inline for what you would expect with that set-up. Must feel nice!

Derived from
Max hp @ 180kph
450nm tq @ 180kph
6213rpm @ 180kph (4th w/4.1 rear 24.8" tire)

Edit- let me know if rear end ratio is not most common 4.10

Your dyno operator is a noob

 

Nice, thanks that's kind of what I thought. Not had a chance to open it up yet but it sure feels good from what I've gathered so far.

Yes I have no idea why rpm was not connected to the dyno, weird. What do you think of the torque curve, looks ok? Missing full boost down low as only 12psi until later. Installing the boost control actuator and going back soon, will make sure the rpm is included. I was just wondering if I should be chasing any issues but if I'm on the money everything is working as it should and I can relax. Thanks again for the reply.

 

Torque curve looks great as expected for EFR.

Torque follows boost and it looks like your boost is set for 12.5psi and then creeps to 15 and settles doen toward redline.

Boost control raising WG pressure to 15psi will help flatten out boost and torque.

Be aware cold weather and low elevations will exacerbate the boost creep above 15psi.

 

Unless they've also done something to the weather tower/correction factor (in which case these guys are kinda fraudy), torque will be correct.

 

Cheers. I have a turbo smart actuator with a 14psi spring so its not holding down low but i'll get the solenoid in and go back.

 

Update. I have been back and set up the boost controller and a few safety sensors. The base timing was not set correctly so was running very retarded. The new graph is better I asked for rpm and derived torque and got the lower torque table, does this look right to anyone?.See new chart attached. Note the roller torque and HP are above the torque chart.
https://cimg7.ibsrv.net/gimg/www.rx7...cd648a630b.jpg

 

Australian Mainline dynos are reputed to show 20% lower HP than USA Dynojet, so that looks like quite good results for 14psi creeping to ~16psi.

You should have been able to get a better boost curve now that you have boost control set up. You and a friend can do that on the freeway.

 

The Mainlines I've used would show a better result than that at 14-16psi with that turbo. Def. should be over 400 imo.

But .................. max torque figure does not match the chart . Something fishy there . Think you were right about the dyno operator !