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That car won't have much power loss because it uses multipoint gas injection. Single point conversions (where the gas is injected at the throttle body) have a larger power loss because the lpg uses up volume in the intake manifold so there's room for less air. There'll still be small power loss...

The short answer is "yes". The long answer is that if you are booting off a SATA drive you may also need to install the SATA driver when you install Windows to boot off a SATA drive. You'll need to make up a SATA driver floppy for your motherboard, and when you are prompted at the start of the...

We have all sorts of styles of number plates available here. You pay the standard fee for the standard plates, and variously higher fees to the vehicle registration authorities for various styles and colours of "vanity plates" if you want them. Its a great idea. Voluntary taxation. If you want...

Is the Scenic 4WD based on the Clio, or is it completely different? Do they share any parts?

BMW's launch control is not traction control. Launch control is there to solve a problem unique to manuals without a clutch pedal. If you had a car with a clutch pedal you'd pick up as many revs as you could that wouldn't just turn your tyres to smoke, then drop the clutch. And in an automatic...

The Quaife ATB diff is a direct bolt-in replacement for the standard 172 diff. It doesn't change anything in the gearbox. It doesn't change the diff ratio.

You can't fit a "rear strut brace" to a Clio because it doesn't have struts at the rear. It has trailing arms. Which is also probably why fitting a brace between the rear upper shock mounts doesn't do anything useful.

Did an internet search. Found a LOT of sites that said don't do this. Don't rev the engine then turn it off. They said it was a silly idea that dated back to carby days, that people thought it "primed" the carb, making it easier to start the next time. But that what it actually did was send...

Here's the situation. You've taken a car that the manufacturer has decided needs a 47 Ah battery, and replaced it with a 16 Ah battery. One third of the capacity. And not just any 16 Ah battery but one that the manufacturer specifically warns is not suitable for deep cycling, ie, using more than...

Look at where phones are going and increasingly they are going to be the computers we all carry everywhere, including in our cars. Phone calls? Tick. E-mail? Tick. Navigation? Tick. Playing MP3s? Tick. OBD-II interface capability? Its possible.

Power = 172 bhp. Wait = 2 more days until you get it. That's a power to wait ratio today of 86 bhp/day. And it keeps rising. At the start of the week it was 172 bhp and there was 7 days to wait for it so the power to wait ratio was 24.57 bhp/day. Tomorrow it'll still be 172 bhp, but the...

Edde says it can get up to 120 degrees on the road. 16v_jon says it only gets up to 110 degrees on the track. Just so we're all sure, you guys are both talking celcius, right?

Yep, you've picked the problem. 24% lost between flywheel and road is wrong. Any competent dyno operator would have looked at that and said at least to themself "hold on, that can't be right".

My calculator gets slightly different answers to yours, but not greatly so. Mine says your remap was worth 11.9%. It isn't surprising you'd get that good a result from a remap after changing the cams. A remap on a standard engine wouldn't give as much bang for your buck. And its not surprising...

A 14.0 not good? It takes a lot more power increase than most of you seem to think to reduce quarter mile times. Its a 4th power rule. To get your quarter mile down from 15.0 to 14.0 takes a 31% improvement in power to weight. If you haven't reduced the weight that equates to a 172 having to...

Macs are not immune to viruses. Its just there aren't many written to attack Macs. Its up to you whether you choose to take the chance.

Ethanol is higher octane (129 octane in pure form, 104+ octane in E85 form) but less energy dense than petrol. So you could run a higher CR, but only if you were willing to permanently modify your car to only run on E85. You would have to remap the ECU to feed the significantly higher quantities...

144+ mph = 195+ bhp

160 mph = 268 bhp 152 mph = 230 bhp

Correct, there is less energy in a gallon of LPG than in a gallon of petrol. What might also be important to the sort of person who drives a sporty car is that depending on the installation you may also get less power. It is possible to do an installation that results in the same power as a...

LPG is great from a fuel cost point of view. The nuisance on small hatchbacks like the Clio is the tank. It uses up most of the boot.

I can see the alternator and the A/C compressor. Where are the power steering pump and the water pump?

The consensus seems to be that the size that's best is the size that comes standard on the car. So if you're going to buy another set the only benefit you're going to get is any perceived improvement in appearance and style.

Let me get this straight. You paid a lot of money for a "performance" exhaust. Now you're complaining its too loud. Ha. Ha. Ha. Ha. Ha. That's exactly what they're designed to do: make a tiny amount more power and a large amount more noise. There's an obvious "fix". Put a standard exhaust back...

A "more upswept tyre"? Please explain.

In a quarter mile race the only gear you use the whole powerband in is first. And in that case you are limited by how much traction you've got, so the extra torque of the turbo wouldn't gain you anything. Plus you don't come off the line at idle. That said, the best quarter mile times I got in...

Same power, same weight, equals same quarter mile time. Its the laws of physics. Power is the measured ability to do work. The same power does the same amount of work no matter whether its generated by an turbo engine an normally aspirated engine, steam, electric or clockwork. Ditto top speed...

You don't have to do a driver test here (South Australia). You can. Or you can simply sign up with a driving school, and as soon as the instructor signs off that you've acquired all of a list of specific skills, and you've got licenced drivers to sign off in a log book that you've put up...

A super cap can eliminate destortion if the problem is that the amp is at the end of a long cable that has too much resistance in it. But it can't eliminate the sort of problem you're talking about of the lights dimming. Let me think of an equivalent you might understand if you not really...

The advantage of a standard 3-point inertia-reel belt are that: (a) it adjusts automatically for a range of drivers, (b) the vehicle was designed for its mounting points, (c) it is designed to work in conjunction with the other safety devices in the car like airbags, and (d) it is crash-test...