Actually Bleebdat, I've owned one as that's the only model that came out in Australia as a GL (onless you've name changed me to "No one"
)
Anyway, back to Myk888's questions.
Firstly, the engine is a D15B SOHC 16v (1488cc) engine. The Keihin/Mikuni carb setup is excellent - we're talking a 98 bhp engine (JDM/Aussie spec - you guys prolly have more emmission controls than we do). It's one issue is that the air filter is mounted to the back of the carbs and pickup is simply a pipe that goes to where most cars have an airbox. That's an issue, as it is picking up hot air from the engine bay.
Now, adding a pod filter to the front of this is not a good solution for two reasons. If you remove the standard filter at the back of your engine bay you increase turbulence and mess with the mixture a bit due to the large oval surface area that is usually smoothed out by the filter. Leaving the standard filter in and then adding a pod filter will choke the engine a bit as the air has to be pulled through two filters.
To make it cool induction - simply run a pipe from the fatory inlet down to a cool pickup point - make sure you have some anti-water setup, H2O + engine = paypacket^50.
However, if you are talking adding fuel injection, forget it. It is too much hassle and not worth the effort. Those carbs are damn good and can be tuned for 130 bhp with a lot of other mods (overbore, bump compression, cam, extractors, exhaust). The engine responds well to tuning and there are twin webber packages available, but a waste of money if you aren't going full house.
Exhaust sound would require a new muffler and tip. Get a sports exhaust and replace the hotdog pre-muffler with a piece of pipe. Better still, get a new cat-back setup and it should sound better and give you a bit more power. Aussie/JDM headers on the D15B are 4-2-1 config already.
Good Luck with it
