Frequently Asked Questions Archives

SPARK MAP

http://fitechefi.com/faq/

The AFR table is a 3×3 matrix – the AFR is interpolated between these breakpoint values. This means that if you’re breakpoints are 45kPa at 14:1 and 95kPa at 12:1, operating at 70kPa will result in 13:1 target. Distrib Base... Read More

AFR Targets

http://fitechefi.com/faq/afr-targets/

The AFR table is a 3×3 matrix – the AFR is interpolated between these breakpoint values. This means that if you’re breakpoints are 45kPa at 14:1 and 95kPa at 12:1, operating at 70kPa will result in 13:1 target. Idle AFR... Read More

Basic Settings

http://fitechefi.com/faq/basic-settings/

These values and options allow: Engine CID = Total Engine cubic inches Cam Mild-Wild 1-4 = This is the way to select a specific volumetric efficiency table that is specially tailored to the characteristics of typical engine configurations. Rev Limit... Read More

N2O Solenoid Control

http://fitechefi.com/faq/n2o-solenoid-control/

If the ECU is to be in control of the relay that drives the solenoids, set this accordingly.

N2O ENABLED

http://fitechefi.com/faq/n2o-enabled/

If the ECU is used with a nitrous system, set this accordingly.

N2O Signal Level

http://fitechefi.com/faq/n2o-signal-level/

If the signal that tells the ECU to enable nitrous is a +12V signal, or a grounding signal, set this value accordingly.

N2O Stage1 Retard

http://fitechefi.com/faq/n2o-stage1-retard/

Spark advance should be retarded when nitrous is on. How much depends on the engine and nitrous combination.

N2O Stage1 AFR

http://fitechefi.com/faq/n2o-stage1-afr/

A richer target should be set with nitrous. This is that target when the nitrous is on.

N2O Stage1 FUEL

http://fitechefi.com/faq/n2o-stage1-fuel/

Fuel can be added or subtracted when nitrous is turned on to help get the AFR closer to optimal. Often times, fuel needs to be removed because it displaces air intake through the throttle.

Gear Shift time

http://fitechefi.com/faq/gear-shift-time/

If the N2O MAX RPM is used to turn off nitrous, this time will delay the reenable of nitrous to allow time for the gear shift to complete.

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