Big Time Poster
19lb fuel injectors questions
OK-
For those of you that have installed 19lb fuel injectors.
What are the gains?
How many have upgraded the fuel regulator to a 3.5 bar? Is this needed?
Thanks-
Chip
'92 535i 5sp
EAT chip, Sachs kit, RRT sport control and upper thrust arms, SS brakelines, Camber plates, Subframe inserts, 3.64 Diff, M5 (3.6L) calipers.
'87 325iS
5-10 Grand Master
got em on both of my bimmers, gained about 1.5 mpg on each but i don't know how much of that is just being fresh clean units, no problems at all on the 535 but the higher flow screwed up the range/mpg function on my e30, it now thinks it gets around 40 mpg hwy. i am running stock 3 bar regulators on both
all america wants is cold beer warm cat and a place to take a poop with a door on it
Big, Big Time Poster
I'm running the #19 injectors with 3.5 bar FPR. My old injectors were probably in there since new on a 194k engine. Pretty crusty. I have swapped back and forth with the 3.0 and 3.5 bar FPR and notice considerable response difference with the 3.5 as well as better gas mileage. My OBC is almost perfect with fuel mileage and I'm averaging 18.7 over the last 1500 miles and around 19.5 mixed driving in the last few months. My driving is California freeway commuting of a 26 mile one-way commute in traffic. Probably about 20 percent of my mileage is stop and go city driving. I intend to soon put my car on a CA smog machine at my friends shop to see how it tests out.
My car also has a Conforti chip for what that is worth.
Frankly, I highly recommend this setup since it updates the FI system considerably.
Mike Holbrook
Meridian, Idaho
1992 535im, 17", Euro M5 Throwing Stars 8's & 9's, FK-451 235/45s & 255/40s, M5 Sway Bars 25/20, Conforti chip, Lowes Ram Air, glass sunroof
Grand Master
Where would one get a 3.5 bar FPR?
And how much did it set you back?
Robin
72 Chevy K10
01 E39 M5
5-10 Grand Master
i can't remember which one but some 944 porsches have a 3.5 that will bolt up for around $100
Originally Posted by Robin-535im
all america wants is cold beer warm cat and a place to take a poop with a door on it
winfred what year is your e30 mine is a 87 is
Big Time Poster
3.5 fpr
Check out this site
www.bahnbrenner.com
Chip
'92 535i 5sp
EAT chip, Sachs kit, RRT sport control and upper thrust arms, SS brakelines, Camber plates, Subframe inserts, 3.64 Diff, M5 (3.6L) calipers.
'87 325iS
Big, Big Time Poster
Get the numbers off the Bahnbrenner site and then order from BMA. I think it was around $70 or so for the 3.5 FPR. The one to have is from the Porsche 944S. The 944S4 is 3.8 bar and would require some modification although only very minor and I have no experience with this FPR. The 3.5 bar from the 944S is a bolt in deal which looks exactly like the stock FPR.
BMA is the cheapest place to buy I believe.
Mike Holbrook
Meridian, Idaho
1992 535im, 17", Euro M5 Throwing Stars 8's & 9's, FK-451 235/45s & 255/40s, M5 Sway Bars 25/20, Conforti chip, Lowes Ram Air, glass sunroof
Grand Master
You can buy an adjustable FRP for $100
A FPR that fits the Buick Grand National will bolt on the M30 fuel rail. You'll need a 90 degree T fitting to connect the fuel return line.
Jeff
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
i have a question
is the purpose of this mod to increase fuel mileage or gain performance or both? also are these factory fuel injectors for another model or are they aftermarket or something different. finally, is this mod for 3.5liter engines ?
thanks very much
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