just bought from brother eric this afternoon this DIY volt stabilizer was awesome I've install it on my honda civic 2001 really feel the performance after 10minutes of idling before i try the product.This product really gain performance on my car and less knocking when my auto gear box shift and do stable the volt current that appear at my volt meter. THIS REALLY A GOOD PRODUCT TO TAKE (CHEER UP ERIC) will buy 1 more unit from u soon and recommend my fren to take from u too like what I SMS to u.