fuel pressure regulator?

what does that do ,and how much is it, where can i get it. oh and how long before my check engin light goes off after putting on a ingen cold air?

is it a new sentra that you have because i just got mine and wanted to throw an intake on, someone please give me some insight to this because i dont want my check engine light to come when i throw that on, and also...anyone with a spec v want to pull to the left when you give it gas in sixth gear

dude i have a spec v. and on the 6th gear thing i have no idea but yea i bought a ingen cold air its off the hook

Fuel pressure regulators allow you to adjust the level of fuel presure going to the injectors. I beleive it is useless unless you upgrade your fuel pump and injectors. The factory levels are set for the current state of tune(stock) and are probably good enough if you perform a few mods, like intake, exhaust, header and ecu upgrade. Once you start to boost or run nitrous you should have upgraded your fuel system(pump, Injectors and FPR). Hope this helped. As for tourque steer, you will notice it pulls one way or the other in every gear. It is inherrant in all FWD vehicles. Also road conditions play a part in it. I have noticed that sometimes it will pull left, other times right depending on the crown in the road.