I have a 1996 B18B1 in my 1992 Civic CX hatch.

Intake, and high-flow cat, and 2.25 cat-back exhaust.

Stock header, stock motor.

I just got my wide-band installed, and for a while now I've noticed that the car 'breaks up' a little at about 5700RPM untill redline. (wide band is just behind my ebay high flow cat, so its basically just a test pipe and has no affect on the wide band)

So I finally did some runs with the wide-band and found out my car is leaning the **** out at 5700RPM *pegs my wide-band at 16.8*

Ideas? Solutions?

 

time for a properly tuned ecu my friend. What ecu is in the car right now?

 

Stock OBD1 PR4.

All I have is intake and exhaust, I find it hard to believe I need a tune to solve me leaning out uptop.

 

You would be surprised what a little bit lower fuel pressure and a high flowing intake and exhaust can do to a car.

 

intake is standard flea bay affair, Stock header, so the exhaust has VERY little affect aside from a slight drop in back pressure.

any possiblities that the fuel pump is failing? or having issues (as this is a CX with its origional pump with 100K on it)

 

What wideband do you have and did you calibrate it? What does it read at idle?

Tomdata - Your sig is really annoying, please change it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tomdata &raquo;</TD></TR><TR><TD CLASS="quote">time for a properly tuned ecu my friend. What ecu is in the car right now?</TD></TR></TABLE>

Only a matter of time before your sig gets deleted by a mod.

To the o.p. - get it tuned.

 

Is that better?

 

LOL! Yeah, you're solid now man

 

14.5ish at start up, low 14's when warm, 13.8 at WOT.

any possibilities the fuel pump is about to kick the bucket? (My car is a CX, and has 110K on the stock pump, and only about 4K with this motor in it)

 

Get your ECU tuned on crome or hondata.

 

I don't think anyone is reading my freaking post...

My car has an Intake, this would not cause me to peg lean at 5700RPM, My exhaust work is BEHIND the header, and again, wouldn't effect my fuel curves drastically.

Something is WRONG, a TUNE will be a bandaid on an open wound.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dasfinc &raquo;</TD></TR><TR><TD CLASS="quote">I don't think anyone is reading my freaking post...

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Funny i was thinking the same thing:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">What wideband do you have and did you calibrate it? </TD></TR></TABLE>

Another note where is the wideband positioned in your header/exhaust. And yes could very well be your loosing fuel pressure up top, do you have a fuel pressure gauge?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">

Funny i was thinking the same thing:

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Seriously, wtf Lol Its basically a STOCK b18, with a STOCK ecu, it doesn't need a goddamned tune.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">
Another note where is the wideband positioned in your header/exhaust. And yes could very well be your loosing fuel pressure up top, do you have a fuel pressure gauge? </TD></TR></TABLE>

its probably 20 degrees off-center from being straight up and down off the TOP of the exhaust.

I do not have a fuel pressure gauge noone has really explained how I'm supposed to do that in detail. Thanks for some useful input though!

 

Back to the top, I ordered a VAFC1 and a B+M FPR today, Going to be ordering a walbro 255 and RC 550cc injectors in the next day or too.

My resident honda expert informed me that the CX pump doesn't have enough power to feed the B18B1 I have in my hatch at WOT in high revs.

 

You need a newer pump the cx is made for an 8 valve not dohc 16 valve its flow rate is definitely at its peak and its failing dont go get a walboro 255 either that without a regulator your going to run rich just a simple integra stock fuel pump or even a civic ex or dx one and you will be fine and I know because my car is also used to be a single cam cx with the same problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slvrcvc93 &raquo;</TD></TR><TR><TD CLASS="quote">You need a newer pump the cx is made for an 8 valve not dohc 16 valve its flow rate is definitely at its peak and its failing dont go get a walboro 255 either that without a regulator your going to run rich just a simple integra stock fuel pump or even a civic ex or dx one and you will be fine and I know because my car is also used to be a single cam cx with the same problem. </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dasfinc &raquo;</TD></TR><TR><TD CLASS="quote">Back to the top, I ordered a VAFC1 and a B+M FPR today</TD></TR></TABLE>

I plan on boosting, thats why I ordered a FPR Thanks for the heads up though and confirming my issue.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dasfinc &raquo;</TD></TR><TR><TD CLASS="quote">

Seriously, wtf Lol Its basically a STOCK b18, with a STOCK ecu, it doesn't need a goddamned tune.


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Dude i know what swap you have, and i never said you need a tune. You have yet to answer my question.

<FONT SIZE="4">WHAT WIDEBAND DO YOU HAVE AND DID YOU CALIBRATE IT BEFORE INSTALLING IT?</FONT>

If your going to boost dont use a B&M get a 1:1, AEM, Weldon, Aeromotive, etc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">

Dude i know what swap you have, and i never said you need a tune. You have yet to answer my question.

<FONT SIZE="4">WHAT WIDEBAND DO YOU HAVE AND DID YOU CALIBRATE IT BEFORE INSTALLING IT?</FONT>

If your going to boost dont use a B&M get a 1:1, AEM, Weldon, Aeromotive, etc. </TD></TR></TABLE>

That wasn't aimed TOWARD you, I apologize about that, it was aimed to most the people above you saying I need a tune and not freaking reading.

AEM UEGO wideband, 30-4100. not really a whole lot explaining on how to calibrate it other than there is a little flathead thing on the back of the gauge, to change its modes.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dasfinc &raquo;</TD></TR><TR><TD CLASS="quote">

That wasn't aimed TOWARD you, I apologize about that, it was aimed to most the people above you saying I need a tune and not freaking reading.

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Aight no worries, you quoted me then said that so i assumed it was to me, my mistake.

For whatever reason i can not find any documentation on the AEM website for that sensor. I know my Innovate sensor gets recalibrated before i take the car out to the dyno or the track. Could be an issue, although your idle seems to be fine (14.7 is perfect idle).

I would cancel your order for the VAFC and FPR and go with the pump first on the list. Like i said before dont use B&M FPR for a turbo app.

 

I'm doing a 'mid-end' turbo build (250-275WHP on stock internals) and plan on using the AFC hack so thats why I picked up the VAFC. A buddy of mine *who is running 1000cc injectors on a built/turbo poor man type R* said the B+M one would work just fine for me, do you have bad experiances with it?

I did however ALSO order a pump today (Walbro 255lph)

 

No bad experiences and it will probably work well for you but im against them because they are a "set and go" type of FPR. Say you need 50psi of fuel at 7000rpm you get 50psi of fuel at idle as well. Unlike 1:1 FPR which you could start with 40psi at idle and say you are boosting 10psi. The FPR will automatically jump you to 50psi. 1:1 means 1 pound of air = 1 pound of fuel. Does that make sense? But yea thats why i like them over set and go.

 

I can't imagine I'm going to need a crazy high amount of PSI, but I understand where you are coming from.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slvrcvc93 &raquo;</TD></TR><TR><TD CLASS="quote">You need a newer pump the cx is made for an 8 valve not dohc 16 valve its flow rate is definitely at its peak and its failing dont go get a walboro 255 either that without a regulator your going to run rich just a simple integra stock fuel pump or even a civic ex or dx one and you will be fine and I know because my car is also used to be a single cam cx with the same problem. </TD></TR></TABLE>

All '92-'95 Civics have the same fuel pump. Check their part numbers, they are the same.

 

Blah Blah Blah Blah Blah. If you have all of the answers then why even ask the question.

BTW the stock CX fuel pump can support about 250WHP no problem as long as its not worn out.