HI!

To get a good speed and a clear tone (very important cuz if all the tones mix up it sounds crappy and not precise) there are a few tips what u should do:

1. Get a metronome

to work with a metronome is a good way to improve both speed and accuracy. start with a basic pattern say:

http://www.ktv-krems.at/s.trailovic/unbenannt.html

Start at a pulse of 120 beats per minute and play 16th notes so that every 4th note falls evenly over each click.
Try not to use distorted sound - you will hear it better with a clean tone. try to accent every fourth note. Then move the tempo up in steps of 8 bpm (120, 128, 136, etc)
When u get in trouble at a certain speed then move back to the lower speed or start again from 120.

Parctive this till u reach a maximum of 208 bpm - at such a high speed it is important that u accentuate every 4th note in order to creato yer own click - and that should completely match the metronome.

2. Economic movements!! Use all 4 fingers (i know alot of gutarists with an underdeveloped pinky).

When u play try an make very very small movements - do not lift yer fingers off a string unless it is necessary. DO not move away your fingers more than 2 millimeters from a string - this will improve accuracy and speed.

3. Try to play without fret-noise. A good damping technique from both left and right hand is essential!

4. Use alternate picking! (without that you will never break the speed of light)

5. Use Sweepings if u play uneven groups o notes per string!

ex: (d=downward stroke, u=upward stroke)

e___________
b___________
g___________
d____________________12_14_15
a___________12_14_15_
E__12_14_15_
...d..u..d...d..u..d..d..u..d.

so every time u change a string use a sweep (will take a while till u get used to this) - it only works with uneven groups of notes per string (1, 3, 5, etc)

6. Play legato whenever possible! (hammer ons and pulloffs)

Modern guitarplay (shredding solos) consists IMHO of 70% legato and 30 picked!!

Cheers
-=[Azrael]=-