Adjust Timing with an SCT X3

Anything about Ford EEC tuning. TwEECer and Moates questions dominate, but there's some SCT and OBD-II knowledge too.

Moderators: cgrey8, EDS50, 2Shaker, Jon 94GT

Post Reply
User avatar
BrooseDaMoose
Gear Head
Posts: 45
Joined: Wed Dec 14, 2016 11:58 am

Adjust Timing with an SCT X3

Post by BrooseDaMoose » Fri Mar 15, 2019 9:56 am

I'm a little confused about the timing options on my SCT X3 since talking to someone else. For those familiar with the X3 you know that there is an "Engine Adjustment" menu to change things like Shift Pressure, Shift Points, Spark, etc.. In the Spark option you can adjust the timing at certain RPM intervals. My question is, when adjusting the spark to fire sooner do you chose the positive numbers (+1, +2, +3 etc.) or would you chose the negative numbers (-1, -2, -3, etc.)? I though the negative numbers would advance the spark. So say the stock timing is -5 degrees BTDC, choosing -3 would put the timing at -8 degrees BTDC. Now I'm being told I am supposed to use the positive numbers but I don't think that's correct! Can anyone tell me what is the correct way?
2007 Ranger XLT: 4.0L, CAI, Headers
2003 Ranger XLT: Rebuilt 302, Trick Flow TB and intake, aluminum GT40 heads, 270 cam, Flat Top pistons, Hardened rods and stock crank. Rebuilt, upgraded tranny with Advanced Adapters tail to keep 4WD.
Tuning: SCT X3, BE/EA, MongoosePro

User avatar
Vortech347
Tuning Addict
Posts: 303
Joined: Tue Sep 29, 2009 11:04 pm

Re: Adjust Timing with an SCT X3

Post by Vortech347 » Thu Apr 25, 2019 11:20 am

+ means you are adding ignition timing.

Be careful with those SCT can tunes. Some aren't the greatest.
Matt
90 GT, 347, Vortech Si-trim (11psi), Edelbrock 6037 heads, Super Victor 8.2 EFI Ported, 80MM Pmas, 60lb EV14 Bosch Gen 4 Injectors, KB BAP, B31 Cam, T56. Tweecer RT, A9L. Software: EA/BE. 550rwhp & 513rwtq.
2003 Sonic Blue 03' Cobra 497rwhp 481tq, Pro Racer Pack
2013 Taurus SHO Performance Pack.

Post Reply

Who is online

Users browsing this forum: No registered users and 14 guests