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0
votes
1answer
77 views

Dodge Neon SRT-4

My SRT-4 is putting out the proper boost and pulling vacuum, but it's not pulling the right amount. When I bought the car in 2008 it was pulling about 20hg, but it sat for three years and now it is ...
-1
votes
2answers
530 views

The disadvantages of mitsubishi lancer 2007 [duplicate]

I am planing to buy a new car that has to be good enough to be used everyday . I have tried the speranza and the brilliance but weren't good and not reliable to be used everyday . Many friends ...
7
votes
4answers
412 views

Assuming identical and sufficient ABS, and ignoring aerodynamics, are tires the only factor for braking distance?

I had my first accident two days ago (minimal injuries so don't worry about that), and it's got me thinking about a lot of different aspects to driving and cars, such as braking. Had my braking been ...
4
votes
1answer
20k views

How much does displacement affect performance?

I'm interested in learning more about the steps that can be taken to increase the performance of an engine. I'm curious how much displacement affects performance. For example, compare the following ...
0
votes
1answer
44 views

Does the advantage of ballast make minimum weight rule pointless? [closed]

Rules pertaining to the minimum weight of cars in motorsport (600+ kg in F1) were introduced to prevent manufacturers from producing dangerous designs for the sake of being lightweight. However, we do ...
2
votes
1answer
3k views

What (if anything) does the Sport button on a Mini Cooper do?

There is a button next to the stick shift labelled Sport. It feels like it just re-maps the throttle so the pedal is more sensitive, but does it really change anything about the performance, ...
2
votes
2answers
421 views

Advice on buying a new car (Ford Focus Zetec 1.6 vs. Subaru Impreza 1.5R)

This question is probably somewhat subjective as all cars are slightly different. I am currently in the process of looking for a new car. I'm currently driving a Vauxhall Astra 1.8 SRi (mk-5, 5 door ...
12
votes
3answers
9k views

Is high octane fuel a requirement for high-compression engines?

I own and use a 2005 Chrysler Crossfire SRT-6 as my daily commuter vehicle. I'm not interested in trying to eek out a few extra miles on a tank, I want to keep the vehicle and its engine running as ...
10
votes
2answers
547 views

Performance Exhaust — what, how, why?

I've seen performance exhaust pipes on sale for cars and motorcycles, and my questions are these: What does it do? (better performance [and how so?]? better mileage? cooler sounds?) Is/how is it ...
2
votes
3answers
97 views

Alternate fuel for motor cyce

In some countries, Government mixes ethanol with petrol & diesel and distributes it to their consumers. This will save some of their imports. My question is Can I blend petrol with Zatropha ...
4
votes
1answer
395 views

How much longer than a copper plug will an iridium plug last (on average)?

I've been hearing a lot about iridium spark plugs lately. I have read claims that these plugs are more durable than copper plugs due to iridiums high melting point and anti-corrosive properties, but ...
2
votes
2answers
2k views

Seat Leon FR TDi 170 injector recall - affected cars

I am looking at purchasing a 58 plate (late 2008) Seat Leon FR TDi 170. I am aware of the injector recall, however I would like to know for how long the problematic injectors were a problem for? The ...
-2
votes
2answers
113 views

how to compute performance of clutch [closed]

I have this idea: attaching electric motor to clutch and then to a generator then computing when for example we 1kw give the motor how much generator will take back? now we have performance of ...
1
vote
1answer
69 views

v-tech now vs then

Back around 2003-2006 I looked into V-Tech which was using a variable cam lobe with a more agressive profile that engaged when "needed". Today, we have motors with a continuously variable valve timing ...
12
votes
4answers
2k views

How to troubleshoot excessive timing retard?

I've seen numerous cars that for one reason or another, retard timing excessively at wide open throttle - getting worse over time. Seat of the pants impression is that power drops off steeply as RPMs ...
2
votes
3answers
132 views

Jet performance chips & mfgr warranties

I was toying with the idea of getting a bit extra from my 2011 Chevy Cruze Eco. It's a great car but I think the turbo is being control via the computer and in my opinion, could be a bit better. I was ...