idle issues

Post by **Bugermass** » Tue Oct 21, 2008 3:27 pm

just run a stock regulator.

boostedsol · Post by **boostedsol** » Tue Oct 21, 2008 4:27 pm

ok, sounds good to me, just wanted to confirm what i was told. Bugermass do you tune on weekends?

xenocron · Post by **xenocron** » Thu Oct 23, 2008 1:09 pm

calvin wrote:
Bugermass wrote:if the regulator is the B&M that attaches to the stock regulator I would suspect that may be part of your problem.. Those regulators don't hold up very well.
2x disconnect the hose from it and retune

Why would you suggest someone disconnect the vacuum source from their regulator? I'm not sure exactly what you mean...but that will screw things up royally with a 1:1 rising rate regulator if the FPR isnt adding or subtracting fuel pressure based on the intake manifold reference source. Scott failed to mention a couple key things, #1 his car was having charging issues when we tuned...I told him to replace the Alternator which I think he has done recently. A failing charging system will certainly reek havoc on a Walbro that likes a lot of current. Also, for those of you looking for troubleshooting info, wiring in larger gauge wire and a relay setting and sending power directly from your alternator to the fuel pump is a good upgrade

Also, never understood why the B&M get a bad rap...all they are is a stock regulator, so if you are going to shit on the B&M then dont suggest just running a stock afterwards. I have been running the same B&M on my turbo car for at least 3 years now...works great

boostedsol · Post by **boostedsol** » Thu Oct 23, 2008 1:45 pm

hey crhis, yes i did forget to mention that, now that i have the alternator in, it seems as if we are good to go. I took the car for a ride yesterday and had no issues other that a low vacuum reading of 15in/hg so a leak is in the works somewhere. But this time i did not loose fuel pressure or anything of that matter. I want to thank you for taking the time and helping me along with these issues i have came across lately. It has helped out alot.

xenocron wrote:
calvin wrote:
Bugermass wrote:if the regulator is the B&M that attaches to the stock regulator I would suspect that may be part of your problem.. Those regulators don't hold up very well.
2x disconnect the hose from it and retune
Why would you suggest someone disconnect the vacuum source from their regulator? I'm not sure exactly what you mean...but that will screw things up royally with a 1:1 rising rate regulator if the FPR isnt adding or subtracting fuel pressure based on the intake manifold reference source. Scott failed to mention a couple key things, #1 his car was having charging issues when we tuned...I told him to replace the Alternator which I think he has done recently. A failing charging system will certainly reek havoc on a Walbro that likes a lot of current. Also, for those of you looking for troubleshooting info, wiring in larger gauge wire and a relay setting and sending power directly from your alternator to the fuel pump is a good upgrade Also, never understood why the B&M get a bad rap...all they are is a stock regulator, so if you are going to shit on the B&M then dont suggest just running a stock afterwards. I have been running the same B&M on my turbo car for at least 3 years now...works great

Post by **Bugermass** » Thu Oct 23, 2008 5:41 pm

I never recommended removing the vaccume source, I would never do that. And the B&Ms are crap. Mabey yours works fine, but I have tuned about 300 hondas (counting by files in my tune dir) since last year when I lost everything on my old laptop.. And the B&Ms are very irregular in most cases. Anytime you modify somthing there is the potential for it not to be as good, so saying that its a modified stock regulator doesn't mean its as good as stock.. .. on another note, I just realised I have 120 or so cars on eCtune.. That number creeped up fast. I was gonna give the 100th eCtune customer a free tune lol.. Oh well too bad for him..

98vtec · Post by **98vtec** » Thu Oct 23, 2008 6:57 pm

i think i have had my B&M for a good 4 years now, lol

Post by **Bugermass** » Thu Oct 23, 2008 8:03 pm

with N/A the issues arn't as bad, but the are still there. have you ever really watched your fuel pressure on the dyno to see how repeatable the pressures are? Next time you get a chance try it. I've had bad luck with those regulators on more than a handfull of cars. Not every single one, but quite a few.

greasemonkee · Post by **greasemonkee** » Thu Oct 23, 2008 8:38 pm

Some time ago I had made the switch from a vacuum controlled B&M to the oem unit without the vacuum line. Since the pressure at idle is 57-58 psig on the line, I figure this wouldn't be a problem since I only run 10 psig boost to make for a corrected 47 psi injector pressure. The idea was to eliminate as many variables as possible in search of a solution to inconsistent idle fueling. To date things seem to be dead consistent other than injector temps fluctuating. I was playing with this recently, decided to hook the vacuum line up and see where line fuel pressure went, it dropped to 50 psi. Here's the interesting part - fpr with no vac (what it was tuned for) @ 58 psi = 13.5 AFR. fpr with vac @ 50 psi = 12.9 AFR I couldn't understand it so I kept checking it like a kid with obsessive compulsive disorder to make sure. I'm assuming the extra pressure is holding the injector closed longer?

boostedsol · Post by **boostedsol** » Thu Nov 06, 2008 10:55 am

so after replacing the alternator, all of my idle issues have disappeared.

TopMountGSR · Post by **TopMountGSR** » Thu Nov 06, 2008 1:48 pm

I had very very similar issues, I removed my b&m regulator and put a stock one back in its place, not a problem since.