this maybe a stupid question, but i just want to know what they have done to my car when i go tuning. and do i need some piggiback computer on my car before i go tuning?

 

If you don't have some sort of programable ECM(standalone) or piggyback fuel controller, there really isn't much to tune. You could maybe play with your ignition timing, static fuel pressure, and cam timing(if you have adjustable sprockets), but that's about all I can think of.

 

I'm no expert, but I don't agree with that first statement at all. The fact that a vehicle has no electronically controlled aspects has absolutely nothing to do with whether or not you can tune it. Ask anyone who uses carburetors, or even anyone who has been in the racing business for a few years. They'll laugh in your face if you try and tell them there's not that much to tune because there's no computers.

Tuning is getting the absolute peak of power and performance...and efficiency, in the case of those of us who race our daily drivers...out of your car. Not just your engine, not just your suspension.

It's getting the engine to produce the most available horsepower with changes in fuel inlet timing, spark timing, cam lobe size and timing, exhaust size/shape, intake size/shape, drivability, and several other aspects that I'm sure anyone could name. Every aspect of an engine can be tested, getting more power if optimized.

It's tuning the suspension to handle every different track, be it straight, twisty, flat, hilly, dirt, asphalt, whatever...making the car's wheels handle the car around any type of terrain that might be on the track.

Granted, with the use of computer controls, you can be far more precise and differing with your tuning, and you can change things a lot faster. You can have say...3 different settings on a single engine configuration...a race setting, a daily driving setting, and a pass-a-smog-test setting...hehehe...but tuning isn't limited to computers or engines.

 

His handle has "gsr" in it, so I'm assuming he's running fuel injection. He also asked about a "piggyback computer" and said he was going to "go tuning", so I'm also assuming he means fuel map tuning on a dyno. I completely understand that there is more to tuning a car than achieving maximum power output, however my statement was in regards to tuning on a dyno. You have every right to disagree with my statement, but your points, while valid, don't really apply to dyno tuning. Sure, changing his cam profile and the shape of his intake and exhaust ports is a form of tuning, but I doubt he'll be doing that between dyno runs. Sure, a properly set-up suspension is utterly crucial to getting whatever power being generated by the engine to the ground and controlling it, but I doubt suspension settings will matter much during a dyno session. As I have said, my statement about tuning was focused on the aspects one can tune on a dyno. Unless you own a dyno, or have discounted access to one, you're going to be paying $100/hr or whatever they charge for dyno time these days. With that in mind, the methods of tuning I listed are pretty much all you can do, unless you plan on emptying your bank account. If I'm wrong and yokogsr does not drive a fuel injected GSR, and if he is not referring to dyno tuning, then please disregard my posts.

 

Sorry AwwsChwa, inspy's got this one covered, which is why I didn't chime in on the post.

 

sorry, didnt analyze the post fully, got too general

 

thanks a lot to all of u giving my advices. what i mean in my previous post is like inspysal says,dyno tuning. i hesitated about getting computer for my car first or go dyno tuning first. now i am sort of clear out. thanks all of u.