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You should know this if you have a FiTech! These are FiTech tuning tips everyone should know! When I first bought my FiTech, I had to learn a lot of different tips and tricks on how to tune it just right. I want to share those with you.
Buy the FiTech here: amzn.to/2WZBRPv
*NOTE: If you buy a FiTech from Amazon, buy it from FITech, not a third party or FiTech will not be under warranty if something goes wrong*
1. Saving your settings. Every time you make an adjustment on your Fitech controller you need to save your settings. To do this you have to do two things. 1 - click the thumb stick or push “Send to ECU” and 2 - turn the key off and let the numbers zero out. Now whatever change you made is saved.
2. How to get the VRCoil option on the Handheld controller. This is an easy one, but it took me about an hour to figure it out. Go into your handheld controller, and go to Tuning, then Timing control. This is for if you are running a locked out distributor and want FiTech to control your ignition timing. So this is the only function on the controller that I’ve seen like this. You can’t click it, you can’t hit enter and change it, you can only scroll right with the thumb stick.
3. How to get to the "Pro Tuning" screen.
4. IAC Steps. IAC stands for Idle Air Control. So we are going to adjust the air control when the engine is running at idle. To do this there is a screw on the driver’s side of the throttle body. With the engine off, turn this screw in (clockwise) half a turn. With that done turn the key on and go to dashboard and find TPS and make sure it reads zero. And make sure to put your cover sheet on your TPS report. If not, then shut the key off and wait for the numbers to go black then turn the key on again. Once that reads zero start the vehicle and find IAC Steps on dashboard. This number needs to be within 3-10 at warm idle. If the IAC Steps number reads zero then slowly turn the screw OUT (counter clockwise) until the IAC steps reads between 3-10. If the number is above 10 then shut the vehicle off and turn the screw IN and repeat the process until the IAC steps are between 3-10.
5. AFR. AFR stands for Air Fuel Ratio. So this is the air and fuel mixture ratio that is being pushed into the piston. At idle, you want to aim for an AFR between 11.6-14.6. As you drive, the Fitech will learn and balance this number out. BUT, when I go and get my Bronco tested for emissions, I crank this number to 14.9. If you are driving around and always smelling gas, you are probably running to rich and need to increase this number.
6. DFCO and exhaust popping. DFCO stand for Deceleration Fuel Cut off. If you are having issues with the engine popping out of the exhaust when you let out on the throttle. Pro tuning, Rev Limit Decel Cut, DFCO Cut Fuel Map, turn down around 16 and the DFCO return MAP to 18. DFCO Return Fuel is if after you let your foot off the gas and then try to step on it again, and your engine hesitates then you want to bring this number up to around 85. Try different settings on this, and see what fixes your problems.
7. Pedal sensitivity. If your gas pedal has lost some of the sensitivity since installing the FiTech go to Pro Tuning, Accel Pump and all the way down to “dTPS ACC Gain” - the higher you set this number, the more sensitive your pedal will be. If you set it too high every time you hit the gas, your engine’s AFR will drop super low, and you won’t get enough air and you’ll just waste fuel.
I know a lot of you have tweaked your FiTech settings, so leave a comment below if you have a tip to share.
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