where can i get some 2.65 ID pipe. i ordered 2.75 and i guess you said it runs a little lean. i dont want to have to worry about that right now so any help locating a pipe would be great.
also, i tried to use a fpr like yours and im having trouble with it leaking.... did u use the stock diaphram in the adjustable fpr with the o-ring too? plus when i tighten it down i can still move the whole piece that i bolted together. would you have a better picture of yours by any chance? i didnt get any directions with mine so im kinda going by the looks of things.
thanks
Zak
orion: Hacked MAF question
-
:: orion ::
- Posts: 1483
- Joined: Fri May 23, 2003 4:40 pm
- Car: '96 240SX, with KA-T @ 12psi...
- Contact:
i ground down the top piece a little bit so when the screws go through to the other side it will tighten better. did you use the little o ring on the aftermarket fpr with that stock diaphram?
Off hand would you also remember what fuel pressure you bumped it up to? i dont have a wideband so im going to try to be on the safe side and run rich. is there any other way of telling if it is running lean or rich?
Zak
Off hand would you also remember what fuel pressure you bumped it up to? i dont have a wideband so im going to try to be on the safe side and run rich. is there any other way of telling if it is running lean or rich?
Zak
-
:: orion ::
- Posts: 1483
- Joined: Fri May 23, 2003 4:40 pm
- Car: '96 240SX, with KA-T @ 12psi...
- Contact:
~54psi base pressure, with vacuum line unplugged.
The "Hacked MAF" setup will be different on each car, and shouldn't be "assumed safe"...even with a 2.75" ID pipe and 54psi fuel pressure, you may still be lean...or overly rich. No way to tell unless you get it checked on a wideband.
BTW, when I blew my first motor, the A/F gauge read dead rich, but it was obviously too lean...at only ~6psi. That was before I checked with a wideband...
And I did not use the O-ring...only a heavy dose of RTV.
- Brian
The "Hacked MAF" setup will be different on each car, and shouldn't be "assumed safe"...even with a 2.75" ID pipe and 54psi fuel pressure, you may still be lean...or overly rich. No way to tell unless you get it checked on a wideband.
BTW, when I blew my first motor, the A/F gauge read dead rich, but it was obviously too lean...at only ~6psi. That was before I checked with a wideband...
And I did not use the O-ring...only a heavy dose of RTV.
- Brian
-
:: orion ::
- Posts: 1483
- Joined: Fri May 23, 2003 4:40 pm
- Car: '96 240SX, with KA-T @ 12psi...
- Contact:
I meant the base pressure should be set with the vacuum line unplugged...as different manifold vacuum will affect the gauge reading.
So to get it set properly, elimate one variable, and unplug the vacuum line.
Set base to whatever you're shooting for, then plug vacuum line back on.
Helps to guarantee accuracy.
You have to have it connected for the FPR to do it's job.
- Brian
So to get it set properly, elimate one variable, and unplug the vacuum line.
Set base to whatever you're shooting for, then plug vacuum line back on.
Helps to guarantee accuracy.
You have to have it connected for the FPR to do it's job.
- Brian
-
:: orion ::
- Posts: 1483
- Joined: Fri May 23, 2003 4:40 pm
- Car: '96 240SX, with KA-T @ 12psi...
- Contact:
-
:: orion ::
- Posts: 1483
- Joined: Fri May 23, 2003 4:40 pm
- Car: '96 240SX, with KA-T @ 12psi...
- Contact:
nsanesrt wrote:1) so what kind of fpr are you runnin ..
2) could you run the sr rail and fpr...
3) ...without having to actually purchase a wideband
1) It's a B&M FPR kit that's meant for a Honda Accord IIRC...you cut the top off your stock regulator, and stick this sucker on. Thing is, you have to get creative and make a bracket b/c the FPR will not fit in the stock location like this...it's too tall. You have to rotate it so it fits...
2) No. And why would you want to? There's no advantage of the SR rail over the KA rail...and the injector spacing is not a match. And, the FPRs are identical...just a simple 1:1 Nissan FPR.
3) Too bad. You'll need to either buy a wideband, or get it on the dyno and verify the A/Fs are OK for boost. If not, you'll be replacing the motor.
- Brian
Find Your Forum!