Adjustable FPR on NA engine?
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This may be a stupid question, but is there any performance benefit to putting an adjustable FPR on a naturally aspirated engine? i.e. is there much tuning that could be done? I wouldn't think so, as unlike a turbo setup there is no large increase in volume of air into the engine creating a need for more fuel, but still the question remains.
Sorry if this is a stupid question.
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What I would really like to do is get M3 cams and the Conforti chip specifically tuned for them, but thats like $600 right there. If I had the money I would go with Sunbelt cams + valvesprings = 9600rpm on stock lifters, all for only ~$2700!
[QUOTE=]Sunbelt Performance Engines, the leading name in BMW engines for the SPEED World Challenge racecars now has now released a 325 2.5L specific version of their Sport Cam set. The E36 215 Sport Cam was created using the most modern design processes, resulting in a product far superior to any other on the market for street and race engines alike. The high lift profile opens the door to new levels of power. Extensive attention to lobe shape allows the engine to rev safely to higher RPMs than seen before - with stock pistons and valvetrain, street or track (more information later). The powerband extends to the higher RPM range to make full use of this capability, but does not sacrifice low end torque.
Cams sold in pairs only to fit US 2.5L M50 Vanos E36 325 engines (1993-1995).
Gross cam lift: .411
Seat duration: (@ .004 hyd lift) 260.0 deg
.050 duration: 218.6
Lobe center Int: 114.0
Lobe center Exh: 116.8
Max RPM oem springs: 8000 rpm
Max RPM race springs: 9600 rpm
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slowvo wrote:
either turbo it or leave it stock
I have an eprom on the way and maybe some pullies down the road, but thats about it. As to the two options, we don't all have the money to go turbo, and still want to mod our cars. I wouldn't say its quite that simple. -
3_Series wrote:
This may be a stupid question, but is there any performance benefit to putting an adjustable FPR on a naturally aspirated engine? i.e. is there much tuning that could be done? I wouldn't think so, as unlike a turbo setup there is no large increase in volume of air into the engine creating a need for more fuel, but still the question remains.Sorry if this is a stupid question. I had a BEGI rising rate fuel pressure regulator ($250) worked good for me.
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3_Series wrote:
I have an eprom on the way and maybe some pullies down the road, but thats about it. As to the two options, we don't all have the money to go turbo, and still want to mod our cars. I wouldn't say its quite that simple.How much faster is it really going to make it?
and what would a rising rate fpr do on a N/A car?
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z31 wrote:
I had a BEGI rising rate fuel pressure regulator ($250) worked good for me.
What gains did you get out of this, I'm quite curious? The omly thing I see a Rising Rate FMU good for is when you are turboing a car and are a complete cheap ass, or have no other option for tuning. -
Every good fuel pressure regulator is rising rate. My Aeromotive is a 1:1 rising rate FPR.
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