Sniper EFI Idle Tuning

sniper

reified does a great job of adapting most engine combinations, but no two engines are the same, so taking the extra time to tune the engines

idle

circuit can be worth it, not only can I help prevent those embarrassing engine stalls, but also when done correctly you will get easier starts, better

idle

quality and improved throttle response. Well, I know what you're thinking when reading the instructions, it's a waste of time. That's why I'm here. I'll show you some idle adjustment basics and guide you. step by step on how to get the most out of your

sniper

system, but before we do that, there are a few things we need to check first with the key in the run position, navigate to the basic setting icons, then the basic idle icons and make sure Your target idle speed is set to the desired rpm you entered in the wizard.

If the values ​​are not correct, you can reset it here if you are using the sniper EFI system to control the ignition timing, navigate to tune advanced idle, then idle spark and set idle spark. To disable it, you will have to turn off the ignition and then turn it back on to save the changes. You can re-enable the timing and control once the idle adjustment process is complete by trying to adjust the idle. Why the ECU is simultaneously trying to control the idle. adjusting the timing is counterproductive, it is also a good idea to visually and manually check the secondary linkage to make sure it is closed, although the secondary blades are not adjustable on the base sniper units, the Quadrajet and 4500 models are adjustable, it is a good idea. to visually check them before starting the vehicle just to make sure they are running smoothly.

If you have a Quadrajet or 4500 series sniper, you can adjust the secondaries according to the instructions included in the kit. Check your TPS reading on your handheld. be zero, if not, turn the key off and then on again to reset it. The idle adjustment screws should be one-half to one full turn in clockwise from initial contact. Once you have completed all the steps we just talked about, you can go ahead and start the vehicle and let it run. We need the temperature to be above 160 degrees on the portable device. This is a critical step. Our first step is to adjust the amount of error allowed by blocking using the handheld device.

Navigate to the monitor multi-meter and then the sensors. tab, the lock reading on your handheld should read between two and eight percent. I typically shoot for the 5 to 6 range. Ideally, blocking is involved as little as possible. Also make sure your temperature is still above 160 degrees to adjust the I. Take action, we will be turning the idle screw on the sniper unit. Turning the screw clockwise will open the throttle paddles, this increases the amount of air through the throttle body, triggering the lock to close and decreasing the amount of air being added by adjusting the throttle. Ayack.

The counterclockwise screw closes the throttle blades decreasing the air in the throttle body this activates the act to open adding more air to compensate when cornering. Screw can I change our TPS reading to reset the TPS to zero just turn off the ignition for five seconds and then restart, the TPS reading should now go back to zero whenever the TPS reading goes above two percent or more, Ayaka automatically goes into the full position, which is between 30 and 50% by default, with that much additional air, your idle speed is will be significantly higher than the target RPM you set with the wizard, making the adjustment almost impossible, so always reset the TPS to zero after making any adjustments to the idle screw.

If your ayack's reading fluctuates or is really erratic, it may be a sign that you have a vacuum leak, you will need to recheck all vacuum line caps and fittings for leaks. A tip to help you identify a vacuum leak is to use a can of aerosol carb cleaner with a light mist of carb cleaner over the lines and fittings. If the idle speed rises slightly when you do this, you found a leak, you will need to correct the problem and perform the adjustment procedure again. Another possible problem area is the PCV valve if your vehicle is equipped with one if you have a PCV valve on your engine it could be sticky or sticky check that it is working normally;

If not, replace it with a new unit and then recheck the idle reading when finished. In some cases you may notice that the TPS reading does not return to zero after you have gassed it or stepped on the accelerator a couple of times, this is usually due in part to a mechanical failure in the linkage. Some possible causes are a sticky or stuck throttle linkage and sometimes even radio frequency interference. Tampering with the throttle linkage can help reveal the culprit. that prevents your TPS from returning to zero, correct the problem and be sure to add a secondary return spring as a safety measure if you suspect your problem is due to radio frequency interference, the only way to verify this is with a data log.

Now, RF is quite common. On older vehicles, especially those that still use the original ignition components, this is especially true if your vehicle has resistance-free spark plugs or solid core spark plug wires. Change your engine to resistor type spark plugs with the correct gap. A set of coiled core cables with a small amount of dielectric grease in the boots and a new distributor cap will help eliminate most of the potential RFI noise. With a little time and effort, your sniper system and engine can perform at their best. Also, don't forget to come back and Riaan will be able to light the dormant spark. time control function if you disabled it before.

I hope you got some good tips today for more sniper instructional videos check out our website at Holly com.