AFR's
 

When I am at WOT in 3rd gear I am leveling out at 10.6 or so. Haven't done 4th or 5th yet because I don't feel like getting a reckless driving ticket. I know the best would be mid 11's, so does that mean I am running too rich? What are the dangers of running this rich? Is there a way, aside from a fuel management system, to balance this out? Would upping the boost help any?

RE: AFR's
 

i dont think thats too bad...save some money and buy a safc or a dtec

RE: AFR's
 

Well, that is the plan eventually, but I just dropped a couple grand on her and can't afford to do anymore at this point in time. I still need to save up for a FMIC, a short shifter, and a fuel management system. Then I can rest for a minute.....

RE: AFR's
 

it's fine for now, but eventually you'll want to lean it out some

RE: AFR's
 

So I had a chance to do some WOT 4th & 5th gear pulls this weekend and my AFR is showing 10.0 exactly. If I was to adjust my wastegate to hold about 17psi & spike the boost via MBC to almost 19psi, would it lean it out? I guess my question is does adding more boost lean it out any? I imagine it would, but I also figured spiking 17-18psi and holding 16psi like I am nowwould run me leaner than 10.0.....

RE: AFR's
 

it will lean it out, but that's not how you want to go about doing it. there's nothing wrong with a 10.0 a/f. if you want to lean it out, do it properly. now if you want to raise the boost to make it faster you're perfectly safe to do so, just watch your a/f's in ptb

RE: AFR's
 

I know that is not the ideal way to lean it out, I just don't have the cash for any type of fuel controller and don't really want to mess with a mapclamp. Guess I'll just up the boost cuz I can at this point. Was looking at the Apexi SAFC Neo though, that thing looks pretty sweet!

RE: AFR's
 

I have seen what you are reffering to. It will be in the 13's & 14's in PTB, and I assume that isn't good. So at what point is running the stoichiometric rate (14.7?) going to cause harm in regards to RPM's? If it is fine to run 14.7 at idle or cruising speeds, but you need to run 11.8 or lower at WOT, what is supposed to happen in between? Can you control what happens in between with a good fuel management system?

RE: AFR's
 

at cruising speeds running 14.5-15.0is perfectly normal. as long as you get a quick lean spike and then it goes back to a rich situation you should be fine. it's when you see extremly lean situations (15.0 or so) for a semi-extended peroid of time that you have issues.

RE: AFR's
 

I know mapclamps aren't for everyone, but I your case why not? You have a wideband and you know your AFR's. You sound intelligent, I bet you would be safe running a map.