My e30 318is s52 swap thread

[FredK]

I think that pic came from a GM Performance forum somewhere. ;)

[BigD]

Thanks dude.

[matt]

Anyone with an e30 should be using the OBDI fuel rail with integrated FPR.

All e36s (that I know of) use 3.5 bar base fuel pressure. (That's 51 psi if you're not into the whole SI thing)

[BigD]

FWIW I have Zionsville's OBDI S52 software, I called Dwight to confirm and it's tuned for the OBDI FPR (although I didn't bother discussing actual pressure differences with him if any, I just wanted to hear which one I should use). Talk to matt about what his chip is tested for.

EDIT: ALSO, Matt just emailed me saying that the OBDI FPR is also 3.5BAR... hope he chimes in here as well.

[OoPEZoO]

It's most likely his experimentation with the following cutting edge technology:

LOL......Fred, you're brilliant. Do you have a patent on that?

[Farbin Kaiber]

Wow. I have never in 10+ years heard of an expanding manifold like this. I have seen tons of GM 3.1l, 3.4l, 3.8l manifolds crack, Mitsu Galant 2.0l seperate at the TB, but never seen one "swell".

[static]

Dang. Now I'll have to rush home and check the PN on my fuel rail. eFIGHT!!!!

i was talking about the pressure (not PN). As i said, obd1=3bar, obd2=3.5bar

[FredK]

Dang. Now I'll have to rush home and check the PN on my fuel rail. eFIGHT!!!!

[static]

nah but seriously, the OBD-I FPR is a 3.5 bar Bosch unit that is shared between the S50 US and the M50. PN 13531726385 or 110.

sorry to bust yer balls, Fred, but according to Bentley (130-11, table c) you are incorrect.

i'm almost willing to bet that the OP will find a BIG honking crack somewhere underneath the manifold once he takes it off

[Charlie]

Okay, so show me where the priest touched you, er, I mean where it's "expanding".

Seriously, I don't even see how this is possible, it's a rigid piece of plastic. Unless you went batshit insane and shaved all the plastic down to nearly nothing, I don't see how it could "flex". Retorque all your throttle body connections down, or better yet, just replace the F'n manifold.

-Charlie

[FredK]

nah but seriously, the OBD-I FPR is a 3.5 bar Bosch unit that is shared between the S50 US and the M50. PN 13531726385 or 110.

[static]

EDIT: ^^ LOL

not sure why obd1 regulator is gay, but AFAIK, OBD1 FPR = 3.0bar, OBD2 FPR = 3.5bar (i may be wrong with numbers, but i remember there is .5bar difference between the two)
So you better make sure your chip is for the right fuel pressure (otherwise your AFRs will go to shits even with the right injectors)

and lol @ expanding manifold, replace that sucker. Be methodical at re-checking everything and use process of elimination. Oh and no shops, DIY it - i-manifold is not that bad at all - you are on the finishing straight.

[FredK]

It sounds like you have some sort of big problem with your intake manifold... I'm not sure exactly what.

It's most likely his experimentation with the following cutting edge technology:

[BigD]

What's wrong with the OBDI FPR? That's what I have too.

[windsor318is]

see....i have the gay 325i obd1 fuel pressure regulator, i think this one cant keep up for the 3.2. whats the factory one you got look like? do you no if the specs are different than the one i got?

i need this thing done, its pissing me off now. and BMP is getting an ear full tomorrow. why wouldnt they track this resonator when its coming from overseas?????