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Download Custom Curves for your 123

We cannot be responsible for what you load into your 123ignition. Too much advance coupled with pinging or a rattling sound can cause catastrophic damage to your engine. These curves can be modified once installed. You are responsible for what you load into your individual ignition.

Download and paste into your Tune Software or manually enter the values into your TUNE+ Bluetooth

Download TUNE EXE 1.8.4

Please Note: Limit your curve to as few points as possible. Usually 4 to 6 work best.

These examples are from the TUNE software

Example 1  (This curve should never be used)

Example 2 (Volkswagon Bosch-distributor 0.231.170.034)

Example 3 (Mercedes 250SE, 250SL Bosch-distributor 0.231.116.051 Negative Vacuum)

Example 4 (Idle control and gearshift retard)

Example 5 (Porsche 4 cyl Tuned Engines Bosch-distributor 0.231.129.009 No vacuum)

Following Examples are contributed

Austin 1959-64 Austin Healey 3000 MK I/II, 1963-1967 40662 A/D Vac incl gear shift retard

BMW 73 2002 Tii

BMW E9 3,0 CS/S/L Bosch nr: 0 231 309 005 with vacuum advance

BMW 1600-1602-1800-1802-518 M10 Bosch 0 231 180 004

MG MGA MGA 1622 (?) Lucasnr. 40510 ( DM2 ) static setting : - 10 degrees before TDC for all engines until number 4003 - 10 degrees before TDC for high compression engines after number 4003 - 05 degrees before TDC for low compression engines after number 4003

MGC Original Factory curve

PORSCHE 356 / 912 BOSCH 0 231 129 022 PORSCHE-4-R curve 5 Orginal No Vacuum.

GB6-R-V Setting #6

VW 0 231 129 009 Tuned VW engines with vacuum

VW one fits all

Volvo Penta B20 static setting : Q105A & AQ115A --> 9 degrees crankshaft AQ130A, B & C --> 12 degrees crankshaft BB115, AQ120 & MB20A --> 10 degrees crankshaft

Volvo Penta B20 static setting --> 5 degrees crankshaft replaces Bosch distributors : 0231.178.011 & 0231.178.005