NoPistons -Mazda Rx7 & Rx8 Rotary Forum

NoPistons -Mazda Rx7 & Rx8 Rotary Forum (https://www.nopistons.com/)

- Single Turbo Discussion (https://www.nopistons.com/single-turbo-discussion-13/)

- - 467.5hp (https://www.nopistons.com/single-turbo-discussion-13/467-5hp-29180/)

I finally got my car on the Dyno this weekend with Steve Kan doing some tunning for the Phoenix Rx7 group. I loaded my car up and headed to Phoenix for a day of tunning.

I asked for a conservative tune being that this car is street driven with occasional track use, so we aimed for a 10.8 AFR across the board and which we got.

We hit 467.5 at 19psi with a 50/50 mixture of 91 and 101 octane gas. That was around 7000 RPM but we lost the tack signal on that run so we missed out on the RPM and torque measurements. The next run at 20 psi we saw 466 HP at around 6k and then Steve let off sensing a slight ignition breakup. This was on BUR9's all the way around.

On pure 91 ocatane we saw421.8HP @ 7100RPM 15-16psi with 322 torque and so this will be my "street trim".

I have an aquamist setup with was not functioning so that'll be turned on, and I'll be modifying my ignition, adding another fuel pump and modifying my turbine houseing/DPsetup and a few other things.

I'll try to get the graphs posted but they are really light and my camera isn't picking them up, so I'll have to find a scanner.

MODS

-Chris

that **** is ******* awesome.....

go 2nd gens.

kevin.

Now you're making me want to stay up late in my garage! https://www.nopistons.com/forums/pub...IR#>/angry.png Good numbers!

nice job man .. https://www.nopistons.com/forums/pub...IR#>/smile.png im hoping to put down similar numbers.. lol.. without blowing my **** up :(

very nice. How's the response on the turbo?

I'll have to actually look the next time I'm driving it. Steve said on the dyno he was seeing 17-19psi by 3900. It feels great to me.

I do know that from lack of time, the port match between my manifold and turbine houseing is HORENDOUS!! My 2in manifold runners practically hit a wall going into the .84 turbine housing (I didn't realize the inleft on the housing would be so small when I cut my divided T4 flange and "rectangularized" the tubing), so there is certainly some response to be gained there.