anak_liar, to fabricate your own downpipe (I'm assuming you are talking about exhaust headers), you need welding equipment, tubing benders and some other misc stuff. Unless you want to experiment with different downpipe configurations, it's wiser to get a premade one to save on all the hassle.
Hi,all altezza member,i have one air flow sensor come with intake box,and o2 sensor for (AT) also come with the extractor both selling Rm950 item use only 6 month,if interested pls call or pm me thank you.i can be...