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AFR Sanity check


Sammynz

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Hi

I have an MX5 NB1 that i have fitted with a t28 turbo, im hoping sombody could take a quick look at my AFR target table to make sure im heading down the right path. 

Essentailly i started with the naturally aspirated base map for the NB1 and made have made it abit more lean below 100kpa then started to richen into boost, i mainly want to make sure i havnt been to aggressive with the fuel in boosted areas.

Aiming for around 10 psi on pump gas, street driver car.

image.png.4eea923ce0eaa8460f41a3d5affc73cd.png

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This is the target table from my old NA MX5 which had an NB2 VVT motor, G19 manifold and TD04HL turbo, it made just over 250whp (191wkW) with ~180kPa MAP at 4000rpm and ~205kPa MAP at 7000rpm on NPD 100 Octane fuel (New Zealand).

note my Y axis is MGP not MAP so just add 100kPa to compare it to yours.

 

Capture.PNG

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I can do one better, here is a copy of the tune, do note I'm not a professional tuner and my motor does have a slightly higher compression ratio than yours.
Also for the Fuel stuff I was running some Bosch 700cc/min injectors and had an aftermarket fpr due to it being a returnless fuel rail on the motor.MX5 VVT turbo last copy of tune 9-5-2023.pclx

And here is a copy of the 191kW dyno pull

191kw pull PC Datalog - 2023-03-29 4;51;09 pm.llg

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1 hour ago, Vaughan said:

This is the target table from my old NA MX5 which had an NB2 VVT motor, G19 manifold and TD04HL turbo, it made just over 250whp (191wkW) with ~180kPa MAP at 4000rpm and ~205kPa MAP at 7000rpm on NPD 100 Octane fuel (New Zealand).

note my Y axis is MGP not MAP so just add 100kPa to compare it to yours.

 

Capture.PNG

 

 

19 minutes ago, Vaughan said:

I can do one better, here is a copy of the tune, do note I'm not a professional tuner and my motor does have a slightly higher compression ratio than yours.
Also for the Fuel stuff I was running some Bosch 700cc/min injectors and had an aftermarket fpr due to it being a returnless fuel rail on the motor.MX5 VVT turbo last copy of tune 9-5-2023.pclx

And here is a copy of the 191kW dyno pull

191kw pull PC Datalog - 2023-03-29 4;51;09 pm.llg 678.58 kB · 0 downloads

legend! thats going to be super helpful for me to have somthing to refrence incase i get stuck. Cant thankyou enough mate!

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