Thread: Why am I all the sudden running lean?

I have not and I should I know... If im in a blow thru setup wouldn't a leak not even have much of an effect besides being low on power? I have to build a tester.

It may not affect it as much since you're running blow through, but dude, I've only been telling you to do it for five years.

http://www.sr20-forum.com/forced-induction-mechanical/46779-greddy-profec-b-dip-switches-back.html#post664080



C

ya ya you have Car ran fine since then though for a few thousand miles.. But ill have to build one of those contraptions
Im sure it will be good to have in the arsenal regardless.

Do you have a dedicated relay for your fuel pump? This made a huge difference in my car, worth doing since the aftermarket pumps draw more than the OEM.

Squirlz,

I do not, But I am setting one up... Currently Im moving the battery to the trunk and then I will be wiring the pump directly! Thanks, I hope it helps.. At this point every little bit helps.
Still looking for vacuum leaks... If I had one im assuming my vacuum gauge would read accurate at 18-20inHG at idle.

Have u solved problem?

Been working on the house and honestly have not touched the car in a while.. Gonna check a couple things this weekend.

1 - Disconnect fuel line, put in a gas can and make sure its pumping fuel sufficiently
2 - Check all injectors.. ( o-rings / clog / stuck etc )
3 - May run direct power too pump w/relay also which was recommended.

Im starting to think its a fueling issue with the running lean issue..

Found this post but didnt have a solution - http://forums.nicoclub.com/ca18det-idle-s-great-under-load-studders-lean-t579265.html

Same exact issue also with a NISTUNE & Z32MAF if nothing works from the above testing I am going to try swapping the tune / ECU..