what the problem here

[bis_1315m]

Alright so to make a long story short I'll start with my mods.

60-1ct, f-con, fcd, fmic, 2.5in piping, intake, hks bov, 10lbs of boost, walbro 255, 12volt mod to pump.

Alright I dont have a wideband yet but I have that gay bouncing afr guage.
and basically whats happening is my car is running super lean the light will bounce inbetween the red and the yellow as I drive at a steady rate and occasionaly go close to green without me changing my speed or anything and when I let off my bov vents to the atmoshpere so it goes really rich for a sec.

and back to red and yellow and when I boost it wont climb up to the green until I've reached full boost and it will be really rich.

The symptoms it's been giving me is it will bog occasionaly pretty often actual, everytime I drive it atleast and when it does bog I see my afr guage go to straight red and I feel a sudden loss of power but it will only do for a second sometimes longer than others.

I've replaced my afm and isc and I've even cleaned my fuel tank.

Mabye my fuel pressure regulator has gone bad or the fuel dampaner mabye or would it be showing others signs.

My guess is it has something to do with the fuel somewhere along the line.

So please help I dont want my motor to blow due to lack of fuel.

Thanks
Michael

and sorry for such a long thread

 

[bis_1315m]

So anyone have any ideas or suggestions I need to fix this problem before something internally breaks.

thanks

 

[Failure14]

Does anything abnormal happen when your boosting? other than the AFR's

 

[airhead04]

Well Im not sure on how to fix your problem, but I do have a suggestion. Stop driving your car if its running lean or pig rich. You will for sure hurt something if you continue to drive it like that. May not be noticable at first but later on itll bite you in the ass.

Just my .02

Sorry I cant really give you advice on how to fix it.

 

[bis_1315m]

Does anything abnormal happen when your boosting? other than the AFR's

other then it running lean when I'm boosting it will bog as I'm hitting full boost it will bog constantly but even when I'm driving normally with no boost it will bog occasionally.

 

[bis_1315m]

I'm so confused right now I dont understand why my car would run pretty rich at boost and not at regular driving I understand the extra fuel is for the extra boost I'm pushing through it but why would it not give the car enough gas at normal driving just doesnt make any sense to me.

Anyone think it could be a fualty FPR or something of that nature

 

[89supra7mgte]

FRP could be an issue you could always jack the car up have someone in it to mock drive it, probably not too safe and actually monitor your fpr? does it smokes or anything? You could have an issue with your afr, giving you false readings? I would start with the basics get the correct actual fuel pressure and go from there see if there is a fueling issue, under boost or load your pressure should rise. Have you checked codes?

 

[bis_1315m]

FRP could be an issue you could always jack the car up have someone in it to mock drive it, probably not too safe and actually monitor your fpr? does it smokes or anything? You could have an issue with your afr, giving you false readings? I would start with the basics get the correct actual fuel pressure and go from there see if there is a fueling issue, under boost or load your pressure should rise. Have you checked codes?

Yeah I dont have any codes and I only have the stock fpr thats on the fuel rail right now and yeah I've been planning on testing the fuel pressure but man 50bucks for a fuel pressure tester sucks.

Do you know anyone that allows you to rent them out or something.

thanks.

 

[Poodles]

That guage you have is a light show plain and simple, you need a wideband to truely know what's going on.

 

[bis_1315m]

That guage you have is a light show plain and simple, you need a wideband to truely know what's going on.

I understand its a piece of shit but still it does tell me something.

And I'm not liking what its saying.

 

[Poodles]

It's only show the output from the narrowband, lean/rich on a narrowband is very small.

 

[figgie]

I understand its a piece of shit but still it does tell me something.

And I'm not liking what its saying.

why not?

it is correct!

During cruise the car will teeter on the lean side and the richen up for a bit. Reason, to get rid of the NOx build up in the cat.

On boost, the car will richen up as per your description. also that vented BOV, you need to recirculate it.

 

[bis_1315m]

why not?

it is correct!

During cruise the car will teeter on the lean side and the richen up for a bit. Reason, to get rid of the NOx build up in the cat.

On boost, the car will richen up as per your description. also that vented BOV, you need to recirculate it.

Well my probem is that it doesnt richin up at all unless under boost and the car occasionally bogs and when it does bog I see it on the afr it will go super lean and I feel a loss of power and then it will go back between the red and and yellow once again and the power returns.

thats why I'm not liking it.

 

[DR902JZ]

Like the man said you need a real wideband,It will help you narrow down your problem.

 

[Poodles]

The point is, you don't know that it's "super lean" as it's a narrowband.

 

[bis_1315m]

The point is, you don't know that it's "super lean" as it's a narrowband.

true I see your point thinkin about getting a aem wideband do you have any experience with these I've heard theyre pretty good.

thanks for the help though

Ohh and any ideas of what the bogging could be coming from

 

[Poodles]

Could be any number of things, have you checked for codes?

 

[bis_1315m]

Could be any number of things, have you checked for codes?

Yeah no codes and no boost leaks but one thing I did notice when I did my boost leak test is that air was coming out of my dipstick does that mean my piston rings are shot or what and is there anything I can do about without tearing it apart.

thanks

 

[lewis15498]

FRP could be an issue you could always jack the car up have someone in it to mock drive it, probably not too safe and actually monitor your fpr? does it smokes or anything? You could have an issue with your afr, giving you false readings? I would start with the basics get the correct actual fuel pressure and go from there see if there is a fueling issue, under boost or load your pressure should rise. Have you checked codes?

And how is this going to give him any idea how the car is going to run when its under load?

OP: as others have said, get wideband!

 

[Poodles]

Yeah no codes and no boost leaks but one thing I did notice when I did my boost leak test is that air was coming out of my dipstick does that mean my piston rings are shot or what and is there anything I can do about without tearing it apart.

thanks

Compression/leakdown test will tell you what's up.