When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hi all, I have an MY98, with an STi induction kit, and a scorpion cat-back exhaust, and every week, the tail of the exhaust is covered in black, I know that the Impreza runs over-rich as standard (to keep things cool), but this seems far to rich. What is the best way to check this out, if I take it to a dealer (bearing in mind it hasnt got a full Subaru service history - although it has been serviced by mechanics I trust and respect more that the scooby employed ones), would they be able to check it on a select monitor, or is it a case of buying some guages, and looking myself???