From what I've read the ga16de responds quite well to inexpensive bolt-on mods. Since I did buy a nx1600 and I want to outperform my neighbours 2liter celica, I have my work cut out for me. In other words, my goal is to achieve/exceed 130bhp/ton.
The first two mods are quite obvious: Advancing timing and installing a cai.
When my distributor was turned all the way, my timing was still only 10 degrees BTDC. I had to work with a file to reach 15 degrees BTDC. (Weird, huh? Can someone explain?)
Removing the stock airbox proved to be too much of a hassle, so I just relocated the stock pipe into the wheelarch and bought a pipercross filter for the stock airbox.
But now I'm stuck. The next step should be an extractor header and a complete 2" exhaust system. The exhaustsystem isn't that hard to achieve, I'll just have to visit a exhaust shop nearby. But where can I find an extractor header in Europe? (Or in a worst case scenario: can they be imported from the US?)
But this will only give me about 20 extra horsepowers. What should I do next?
Is porting the head more efficient than matching the intake and exhaust ports to the headers? Should I increase the compression ratio? Or perhaps have som better cams installed? What's the cheapest way to achieve my goal?
The first two mods are quite obvious: Advancing timing and installing a cai.
When my distributor was turned all the way, my timing was still only 10 degrees BTDC. I had to work with a file to reach 15 degrees BTDC. (Weird, huh? Can someone explain?)
Removing the stock airbox proved to be too much of a hassle, so I just relocated the stock pipe into the wheelarch and bought a pipercross filter for the stock airbox.
But now I'm stuck. The next step should be an extractor header and a complete 2" exhaust system. The exhaustsystem isn't that hard to achieve, I'll just have to visit a exhaust shop nearby. But where can I find an extractor header in Europe? (Or in a worst case scenario: can they be imported from the US?)
But this will only give me about 20 extra horsepowers. What should I do next?
Is porting the head more efficient than matching the intake and exhaust ports to the headers? Should I increase the compression ratio? Or perhaps have som better cams installed? What's the cheapest way to achieve my goal?