[GreenPlease]

Fuel no point in building a big turbo kit until we know we have a fuel solution for it. Rest assured if that gets figured out we will be right on this

Would a methanol kit not be enough Seems to me that with the standback, you could automatically switch maps and reduce boost once the methanol tank ran out.

Did you guys ever investigate splitting the fuel rail in half and running two OEM fuel pumps (one per rail) to the stock injectors? Injectors themselves might still be a bottleneck but at least part of the problem would be solved.

[TurboSid]

Originally Posted by Zeph

I remember reading that a GT35R (for example) should be able to hit max boost @ 2400 RPM's. I can't speak for anyone else, but if I want to go fast I am not in a gear with my RPM's that low except 1st, which is a traction issue anyway.

N/A as long as turbo isn't too big on this engine/setup.

all depends on the volume of air going through the turbo, and u'd need a pretty hefty engine to get a gt35r at max boost @ 2400rpms.

[roozie2001]

Originally Posted by TurboSid

all depends on the volume of air going through the turbo, and u'd need a pretty hefty engine to get a gt35r at max boost @ 2400rpms.

very true. cuz my jaw dropped when i read that. i thought max boost on a gt35r was closer to 3400-3800 rpms or so. Which still isnt that bad but its no 2400rpm

[scheherazade]

Originally Posted by nebz

bigger turbo more lag?

Just wondering, have you driven a 'small engine big turbo' car before?

I don't think many people realize what 'lag' really is.

TBH the drive by wire lag in the 335 is a bigger problem than the turbo lag.

-scheherazade

[GreenPlease]

IMO, I like to think of it as turbo "slingshot" not really a delay in response (lag) as much as it is the way the power is delivered and where it is delivered in the power band.

[ShortCkT101]

I had EVO ix 2.0 with a GT35r running 23psi. I was scared thinking of turbo lag and all the BS people were saying. From my experience i can say turbo lag is over rated.

[roozie2001]

Lag doesnt matter when your car is so fast after peak boost kicks in theyre looking at your tail lights

[stealth-twntrbo]

Agreed I just want to make some good power if we can make 450 whp with a great power curve im in forsure

[midlife]

Originally Posted by Eric@AMS

Fuel no point in building a big turbo kit until we know we have a fuel solution for it. Rest assured if that gets figured out we will be right on this

Eric

how did ARS get around this problem ??

[GeorgeSmooth]

Originally Posted by midlife

how did ARS get around this problem ??

They used methanol injection.

[scheherazade]

Originally Posted by midlife

how did ARS get around this problem ??

From what I understand :

They maxxed out the fuel system - which got them to some HP

Then used meth injection to run more aggressive timing - which gave some more HP.

The turbos flowed better, so they could hold aspiration up to redline.

-scheherazade

[GreenPlease]

^
That's only useful if you can dump enough fuel to facilitate combustion under boost to the redline.

I wonder how hard it would be to drop an S54 into an e92 chassis. Could just throw on the existing HorsePowerFreaks turbo kit. 1000hp has a nice ring to it.

[roozie2001]

Originally Posted by GreenPlease

^
That's only useful if you can dump enough fuel to facilitate combustion under boost to the redline.

I wonder how hard it would be to drop an S54 into an e92 chassis. Could just throw on the existing HorsePowerFreaks turbo kit. 1000hp has a nice ring to it.

then u might as well go buy a 2006 highest mileage 325 for 13-15k. and then take out the motor for a built one.

[jaybigboy34]

Any kind of updates at all with them?

[GreenPlease]

then u might as well go buy a 2006 highest mileage 325 for 13-15k. and then take out the motor for a built one

I've considered doing exactly that

[asr engineering]

Originally Posted by midlife

how did ARS get around this problem ??

Considering how in-efficient the stock turbos are on the N54, the fuel system reaches it max potential much sooner because of increased cylinder pressures. In this application installing a larger turbo helps alleviate cylinder pressures and allows the whole overall combustion process to be more efficient, therefore allowing a broader range of stock fueling capability. Of course there is a limit to this, but that limit is reached much sooner on the stock turbos when they are run way past their level of efficiency.

[Zeph]

Originally Posted by asr engineering

Considering how in-efficient the stock turbos are on the N54, the fuel system reaches it max potential much sooner because of increased cylinder pressures. In this application installing a larger turbo helps alleviate cylinder pressures and allows the whole overall combustion process to be more efficient, therefore allowing a broader range of stock fueling capability. Of course there is a limit to this, but that limit is reached much sooner on the stock turbos when they are run way past their level of efficiency.

Plus I would want to upgrade to a larger single (larger duals would work too) for the purpose of increasing high RPM horsepower. We have people running the stock turbo's upwards of 16 or 17 psi but that is only in the lower RPM range. Above 6k RPM's these stock turbos just can't sustain that much boost. Even if I had a larger single (for example) I could still "only" run 17 psi but maintain that all the way to redline. Instead of having 450 rwtq and 425 rwhp I could possibly have 450 RWTQ and I don't know 500 RWHP. That is what will make this car a beast above and beyond what we are doing right now, without touching the fuel system at all. Then later on down the road, when we do get fuel system upgrades, we could always tune the car for a higher PSI level. Just because you have, say, a GT35R doesn't mean you can't run "only" 17psi of boost (all the way to redline) for the time being. It will actually do this very easily and probably run a good bit cooler.

[dlbrooks18]

Originally Posted by jaybigboy34

Any kind of updates at all with them?

keep checking: http://forum.e46fanatics.com/showthr...384&highlight=

[asr engineering]

Originally Posted by Zeph

Plus I would want to upgrade to a larger single (larger duals would work too) for the purpose of increasing high RPM horsepower. We have people running the stock turbo's upwards of 16 or 17 psi but that is only in the lower RPM range. Above 6k RPM's these stock turbos just can't sustain that much boost. Even if I had a larger single (for example) I could still "only" run 17 psi but maintain that all the way to redline. Instead of having 450 rwtq and 425 rwhp I could possibly have 450 RWTQ and I don't know 500 RWHP. That is what will make this car a beast above and beyond what we are doing right now, without touching the fuel system at all. Then later on down the road, when we do get fuel system upgrades, we could always tune the car for a higher PSI level. Just because you have, say, a GT35R doesn't mean you can't run "only" 17psi of boost (all the way to redline) for the time being. It will actually do this very easily and probably run a good bit cooler.

I wouldn't go as far as to say that the stock fuel system can support 500whp without any exteranl fueling device. Although, running a more efficient turbo system will help broaden the range of the stock fuel systems capabilites.

[dlbrooks18]

http://www.n54tech.com/forums/showthread.php?t=5329

[ocinek]

The fuel pump craps out ay 275whp, so let's fix that first before dreaming of big turbos. Although twin GT285R turbos would be amazing to fix the top end drop off.

[Eric@AMS]

hmm look like they are going to port fuel as a primary form of fueling or a secondary. We have thought of doing the exact same thing but the cost of the kit would be so high with the introduction of an entirely new intake manifold. Would love to see them stay DI and work that way. That is what we are fighting with right now.

Eric