The Best Engine Tune

Firstly, lets understand that this article is written about EFI (Electronic Fuel Injection) and Engine Management. And more accurately, it's about programmable or performance fuel injection. This is not so relevant to factory fuel injection, where the word "tuneup" may mean to check the sparkplugs and airfilter.
This article is about programmable fuel injection and engine management systems that allow the engine to be tuned for both maximum power, but also great drivability and fuel economy.
There are some obvious things like, how much power does the engine make, how much torque does the engine make. They are the easy ones. But often, there are less important than many people realize.

We are involved in tuning cars almost every day. And although engine power and torque are obviously important, there is one thing that almost all customers want from their engine and vehicle.
Drivability.
That's it.
While power and torque are very important, in the end most people are most impressed when a car drives well.
For most customers there is nothing more disappointing, or frustrating than a car that doesn't start well, doesn't idle and doesn't drive well for the 90 of the time, many cars are driven in traffic, or at least driven below 90% throttle.
That is why, when we are doing a tune on a car, we generally ask to have the car for 5 days.
On the first day, the car arrives and the engine bay is checked over to ensure there is nothing that looks like a potential hazard later on, both in terms of incorrectly fitted hoses, lines, throttles, etc. But also in terms of safety. Since, if anything falls off an engine while it is running flat out on the dyno, there is always the potential for disaster.
We also make sure the person doing the tuning has a good understanding of what the customer wants to achieve in this tuning session. If the car is a daily driver, fuel economy may be of high importance. But if the car is a 1/ 4 mile stomer, then there are other factors to consider. This is discussed at some length with the owner of the car before the engine is tuned.
Once the pre-dyno checks are completed on day 1, day 2 is dyno day. Depending on the original state of tune, what modifications have been done to the vehicle, and how highly modified the engine is, the amount of time required on the dyno can vary greatly from 1-2 hours, up to several hours. Your dyno operator will probably be able to give you some indication of the number of hours your tune should take, so long as everything on your engine is working together properly.
If, for example, you have modified your turbo, but not increased the amount of fuel your fuel system can deliver. In this case there may be a point at which the fuel delivery is maxed out, and no matter what the tuner does, he/ she can not get any more fuel delivered into the engine.
At this point, the tuner should stop the dyno tune, and report the situation to you, with one or two suggestions on the course of action required to get past this problem. The solution may be larger injectors, or an adjustable fuel pressure regulator. Experience will allow the tuner make the most appropriate suggestions.
Day 3, is cold start day. Once the engine is tuned for maximum power and torque, it is time to start tuning the starting fuel and transient fuelling. We want to start the engine cold and see how it reacts to throttle movement. This can be a tricky time, as the fuel and ignition maps work in conjunction with the temperature compensations, and the acceleration enrichment adjustable values.
Day 4, cold start and hot start day. Once again, cold starts in the morning followed by warm and hot starts, as well as some cold and hot driving. EFI systems should be checked for correct tune at all operating conditions.
Since everyone drives differently, it is a good idea (if possible) for someone beside the tuner to take the car for a drive with the tuner in the passenger seat. Everyone drives differently to everyone else, so try to have the car driven by at least 1 person other than the tuner before delivering it to the customer.
If the tuner is happy with the car at this point, he usually calls the customer to let the customer know that his car should be ready to be picked up the following afternoon.
Day 5, is final cold start day. One more cold start and immediate cold driving to make sure everything is optimized for the first couple of minutes of driving.

Common Car Problems

You have to do more than just fill up your car with petrol and occasionally clean the windows. The American Automobile Association conducted nationwide clinics at 25 different AAA clubs that included inspecting 6,082 vehicles to find out the five most common car problems--all of which are easy to fix with just a little time and not too much money.1. Tyre pressureDrivers should check tyre pressure at least once a month to ensure tyres are not under- or over-inflated. Low pressure in the tyres can increase wear and fuel consumption, while having too much pressure may reduce traction. Keeping tyres properly aligned will also help assure longer tyre life and improve fuel economy. One should always take care of his car and get the regular car repairs done.2. A clogged air filterMaintain and replace air filters as often as is recommended in your owner's manual to ensure better air flow through the engine. This, in turn, will improve engine efficiency and result in more power and better fuel usage.3. Insufficient tire tread depthFor sufficient traction, tires should have a minimum of 5mm tread depth. Use a depth gauge to check. Most tires also have built-in tread wear indicators that let you know when tire replacement is necessary.4. Engine oil that is low or needs to be changedDirty oil will increase engine wear, while low oil levels can lead to overheating. If the oil level drops too low, lubrication will be lost and severe engine damage can result. Regular oil changes will add longevity to the engine.5. Worn-out windshield wiper bladesRigid, cracked or torn wiper blades can greatly reduce visibility when driving in rain and snow, which could increase your chance of having a crash. Examine and replace your windshield wiper blades once a year or sooner if streaking begins.Your vehicle should be well taken care of. Whenever there is a need of the auto repairs one should contact the best auto repair mechanic in the town.

Tips To Check a Drive Belt

A drive belt is a seamless belt that is used to transmit torque and power from one wheel or shaft to another in a machine or any mechanical system, in this instance a vehicle. A belt drive system typically involves more than two fixed pulleys working together and is very important in the transmission of motion in a machine. In vehicles, it powers the water pump, the air conditioning, power steering, brakes and alternator among other components. It is therefore very important for vehicle owners to regularly check on the drive belt each time they change the oil. This is to ensure that it is in proper condition and will not negatively affect the system. It is not advisable as it is risky to drive a vehicle with a worn out drive belt.



The first thing to look out for is the tension and general condition of the belt to ensure that the vehicle is always ready to perform. An over stretched belt will easily wear. There are several things to look out for when inspecting the drive belt. These are cracks, the presence of frays, missing ribs or the presence of any logged foreign material. If one observes tiny cracks in grooves, that is normal but deep fissures, splits as well as frayed edges or cracks that run parallel to the ribs should be a cause for alarm. Other warning signs include a belt that exhibits a glossy appearance or one that has some of its rib sections, half an inch or longer, missing. Additionally, one should ensure that they inspect the entire length of the belt surface. If any of the above mentioned elements are observed then it is time to change the drive belt. Sometimes, the vehicle may produce a squealing sound. This typically points out to a loose or worn out drive belt. This is because a loose belt may slip and subsequently produce a squealing sound, causing the alternator to vibrate rapidly, thereby wearing it out more easily. If the squeal emanates from underneath the hood, then it is highly probable that the drive belt is either loose or damaged and it will need to be replaced. Belts are in essence supposed to run for up to 50, 000 miles but if signs of wear are observed then it is advisable to replace it.
Even though it is important to have the car checked by a certified repair shop, it is also important to be proactive and inspect the drive belt personally. Thus, if the drive belt is to be replaced one could either replace the belt personally or hire mechanic to replace it. This is very important as goes a long way in preventing problems related to the drive belt and acts to maintain the vehicle. However, as a safety precaution, always turn off the engine before belt inspection and do not work around an electric fan if the engine has not cooled off completely. To ensure that the fan does not engage during check up, it is important to disconnect it.

Tip Top Car Care Tips

It’s true what they say – if you treat your car well, it will never give you problems. Car breakdowns happen only to people who are neglectful. If you know how to keep you car in top shape, you can expect it to never let you down.
Aside from a regular oil change, battery maintenance, and regular fluid check up, there are also other important car-care routines to keep in mind:
Use only the best quality fuel. Remember that fuel acts as your car’s food – if you feed your car well, it will perform better. Use only clean-burning gasoline that not only accelerates your car’s performance, but also helps clean out engine deposits and is safe to the environment.
Maintain your tires. Make it a habit to check your tires’ air pressure at least once a month. Proper tire inflation not only prevents flats, but also saves you fuel and keeps your car and engine stable. Don’t wait for your tires to get all worn out before you replace them. Experts recommend that you switch tires every two to three years, depending in your usage.
Clean your air filters. Filters act to inhibit harmful particles (such as dirt and dust) from entering the engine. If you neglect cleaning your filters, bad air may pass through and cause expensive, even irreversible, damages.
Change your wiper blades regularly. Remember that wiper blades perform the very important function of keeping debris out of your view, and they are especially helpful when you’re driving in low light or bad weather conditions. Don’t wait for your wiper blades to leave streaks or make noise before replacing them because by then, it may already be too late. Bad wipers can scratch your windshield and leave unsightly and annoying marks. If you can, try to change your wipers as the seasons change.