|
I think it comes down to want you really want and you need to weigh up the pros and cons like anything else.
I've often compared these 2 mods and I think both are good in their own ways. Here is my take, hope it helps.
The advantages of the FMIC are that -
1. It will give you some gains especially with your JB3 - 3rd and 4th gear.
2. It's a lot bigger so it will function much better, keep the temps down - beneficial for car.
3. It's completely bolt-on if you go with this option - comparitively easy install.
4. I personally think it makes the car look a lot better - more aggressive.
5. It is legal - no problems with defects or insurance.
The disadvantages of the FMIC are that -
1. Warranty - You always run the risk with mods.
2. It's quite expensive, also downpipes might work out cheaper considering shipping, install etc.
3. It's heavier than the stock FMIC by a few kilos.
The advantages of catless downpipes are -
1. Huge power gains, especially with JB3. Easily the 1st or 2nd best power mod for N54 platform.
2. Price is cheap for power gains compared to other power mods - fmic, intake etc.
3. Releases huge back pressure being caused by the cats - beneficial for car.
4. Relatively simple install - can be done at workshop easily.
5. Small weight saving.
The disadvantages of downpipes are -
1. It is illegal - defects, fines and insurance.
2. Warranty - dealership probably won't be too keen.
3. The added noise and smell might be issues.
|