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      02-12-2014, 04:45 PM   #1189
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2006 BMW Z4M  [4.25]
2003 BMW Z4 3.0i  [4.50]
What gauge wire is it? http://www.powerstream.com/Wire_Size.htm

Check the table.
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      02-12-2014, 06:17 PM   #1190
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Quote:
Originally Posted by tikamak
Quote:
Originally Posted by Rated M Roadster View Post
Nope. VF570 uses stock pump and FPR.


Also, If you all are concerned with starvation, this might be of interest: http://www.radiumauto.com/Fuel-Surge...-E46-P305.aspx
Are you sure?
it says on the website that a bosch fuel pressure regulator is provided.
http://vf-engineering.com/other-bmw/z4m/

I have heard it from several VF owners, maybe the Z4M setup is different and doesn't include a different FPR.
Yes, I'm sure. I installed the kit. And these people you've heard from clearly don't know the difference between a Z4M and M3.
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      02-12-2014, 11:47 PM   #1191
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I'll put my car on a dyno sometime soon, and see what my fuel delivery looks like up top. Can wiring be upgraded from outside the tank and out? Or would it have to be all the way down and into the fuel tank to the pump?
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      02-13-2014, 01:20 AM   #1192
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Electrically it's a matter of degrees.
If you beef up 80% of the length of the wire it will be an 80% improvement (in rough principle, not having defined what's "beef up".)

For instance, 6 feet of wire at 0.1Ω/ft is 0.6Ω.
If you double up 5 feet of that, it's 5' at 0.05Ω/ft + 1' at 0.1Ω/ft = 0.35 Ω total.

If you run 5 amps through the first example you lose 3 V.
If you run 5 amps through the second example you only lose 1.75 V.
If you doubled up the entire 6' run you would only lose 1.5 V.
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Last edited by StickMon; 02-13-2014 at 01:29 AM.
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      02-13-2014, 09:49 AM   #1193
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I have a hard time believing that an upgraded pump would flow less than stock pump at the same power level. I'm only pushing 7psi or so
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      02-13-2014, 11:45 AM   #1194
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Quote:
Originally Posted by ZStig View Post
I have a hard time believing that an upgraded pump would flow less than stock pump at the same power level. I'm only pushing 7psi or so


http://radiumauto.com/media/techarti...l-Pump-Test-87
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      02-13-2014, 03:36 PM   #1195
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tom ... i think what is being said is basically the stock wiring isn't powering the bigger higher flow aero S pump... so its not giving correct flow... however if yours is ok.... then....
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      02-13-2014, 08:07 PM   #1196
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Quote:
Originally Posted by ZStig
I have a hard time believing that an upgraded pump would flow less than stock pump at the same power level. I'm only pushing 7psi or so
It only flows better than stock at 80psi if it's getting enough power . Centrifugal pumps take a ton of juice apparently a stock system only provides 1/4-1/2 at best . The recommended Aeromotive wiring harness is a 30amp switch !!! Running them under power can make them fail early as well , which is why I was ok until recently . If ESS , AA, and VF say the regular pump is ok then I'm going back to it . Remember I was chasing the wrong pulley situation when I replaced mine . ( should have just changed my filter ) my two cents . Between my flywheel / clutch "upgrade " and this my new moto is if it ain't broke don't fix it lol . The problem of only improving one point of a stock system is the rest doesn't work together well . If you put in a lower bar fuel pressure gauge to make an aftermarket pump happy then you have to adjust the tune . It's a slippery slope .
My two cents
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      02-14-2014, 12:04 AM   #1197
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Quote:
Originally Posted by tikamak View Post
is our stock pump listed there?
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      02-14-2014, 12:08 AM   #1198
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Quote:
Originally Posted by gmd2003 View Post
It only flows better than stock at 80psi if it's getting enough power . Centrifugal pumps take a ton of juice apparently a stock system only provides 1/4-1/2 at best . The recommended Aeromotive wiring harness is a 30amp switch !!! Running them under power can make them fail early as well , which is why I was ok until recently . If ESS , AA, and VF say the regular pump is ok then I'm going back to it . Remember I was chasing the wrong pulley situation when I replaced mine . ( should have just changed my filter ) my two cents . Between my flywheel / clutch "upgrade " and this my new moto is if it ain't broke don't fix it lol . The problem of only improving one point of a stock system is the rest doesn't work together well . If you put in a lower bar fuel pressure gauge to make an aftermarket pump happy then you have to adjust the tune . It's a slippery slope .
My two cents
George
wish I didn't read your initial post about how the aeromotive pump really increased your top end pulls

My initial pump started going bad after 3-4 months, but you've probably put yours through a lot more wear and tear. Checking my air fuel ratios is probably my next step. Maybe a code reader can tell me about how the pump is performing too.

What about E46 M3s that use this in their HPF turbo setups, I didn't see them upgrading wiring in their install video. Is our car that different?
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      02-14-2014, 12:34 AM   #1199
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Quote:
Originally Posted by ZStig
Quote:
Originally Posted by gmd2003 View Post
It only flows better than stock at 80psi if it's getting enough power . Centrifugal pumps take a ton of juice apparently a stock system only provides 1/4-1/2 at best . The recommended Aeromotive wiring harness is a 30amp switch !!! Running them under power can make them fail early as well , which is why I was ok until recently . If ESS , AA, and VF say the regular pump is ok then I'm going back to it . Remember I was chasing the wrong pulley situation when I replaced mine . ( should have just changed my filter ) my two cents . Between my flywheel / clutch "upgrade " and this my new moto is if it ain't broke don't fix it lol . The problem of only improving one point of a stock system is the rest doesn't work together well . If you put in a lower bar fuel pressure gauge to make an aftermarket pump happy then you have to adjust the tune . It's a slippery slope .
My two cents
George
wish I didn't read your initial post about how the aeromotive pump really increased your top end pulls

My initial pump started going bad after 3-4 months, but you've probably put yours through a lot more wear and tear. Checking my air fuel ratios is probably my next step. Maybe a code reader can tell me about how the pump is performing too.

What about E46 M3s that use this in their HPF turbo setups, I didn't see them upgrading wiring in their install video. Is our car that different?
It did great at first compared to my old pump with 50 track days and 60,000 miles on it . The Aeromotive does need way more power than our cars put out to the stock pump to have good flow at high pressures . The stock pump is traditional which uses a lot less power than a centrifugal under high load . I'm pretty sure the turbo guys were using a 3 bar regulator ( our stock is 5 bar/72psi ) which makes things a ton easier on the pump , but like I said you have to tune for that . When you have a pro efi ECU you have a lot of options . I chose to ignore the advice of the manufacturer as well but it was a bad idea listening to random E46 m3 posts saying its fine not to wire it properly . Bottom line both our pumps died really early , and I don't think that's a coincidence . Mines not dead per say , but just can't handle fueling once I reach 7 psi of boost . You will not have any fuel pressure codes as long as it's making 72 psi ( normal ) , unfortunately at peak boost we need 80 psi . Just another lesson , learn from it and move on . Looking at my dyno , I'm really pleased with the curve , I mean hell it made 430whp at 7000 rpm before the fueling issue kicked in . I should be a good 450-460whp with that sorted . I'm just glad I didn't have to learn this lesson with a blown motor .
George

Last edited by gmd2003; 02-14-2014 at 11:47 AM.
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      02-14-2014, 03:37 AM   #1200
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Quote:
Originally Posted by gmd2003 View Post
It only flows better than stock at 80psi if it's getting enough power . Centrifugal pumps take a ton of juice apparently a stock system only provides 1/4-1/2 at best . The recommended Aeromotive wiring harness is a 30amp switch !!! Running them under power can make them fail early as well , which is why I was ok until recently . If ESS , AA, and VF say the regular pump is ok then I'm going back to it . Remember I was chasing the wrong pulley situation when I replaced mine . ( should have just changed my filter ) my two cents . Between my flywheel / clutch "upgrade " and this my new moto is if it ain't broke don't fix it lol . The problem of only improving one point of a stock system is the rest doesn't work together well . If you put in a lower bar fuel pressure gauge to make an aftermarket pump happy then you have to adjust the tune . It's a slippery slope .
My two cents
George
For an >1200whp S38 turbo car that my mechanic built in his days, he had a stock fuel pump feeding a fuel catch system and 2 external Bosch 044 feeding the fuel rail. (just a remark, not an argument)

I think we're good with the stock fuel pump. Thanks a lot for your constant feedback, i just cancelled my order of aeromotive fuel pump just because of this thread and your feedback.
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      10-09-2014, 11:38 PM   #1201
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ESS VT2-525 upgrade kit being ordered tomorrow

project 2.87" coated pulley was a fail. Too much belt slip. Car trapped 112mph in the quarter mile, compared to stock 7psi pulley hitting 116. I'm not only dragging this car, I have an autox session on Sunday.

New goal is 430rwhp+ and 122mph trap speeds, with high 11s on street tires. Water/meth injection isn't installed because I can't find a proper adapter to make the stock windshield washer fluid reservoir work as a tank. Eventually.

ETA for the parts and install is gonna be 4-5 weeks
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      10-09-2014, 11:44 PM   #1202
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Quote:
Originally Posted by gmd2003 View Post
It only flows better than stock at 80psi if it's getting enough power . Centrifugal pumps take a ton of juice apparently a stock system only provides 1/4-1/2 at best . The recommended Aeromotive wiring harness is a 30amp switch !!! Running them under power can make them fail early as well , which is why I was ok until recently . If ESS , AA, and VF say the regular pump is ok then I'm going back to it . Remember I was chasing the wrong pulley situation when I replaced mine . ( should have just changed my filter ) my two cents . Between my flywheel / clutch "upgrade " and this my new moto is if it ain't broke don't fix it lol . The problem of only improving one point of a stock system is the rest doesn't work together well . If you put in a lower bar fuel pressure gauge to make an aftermarket pump happy then you have to adjust the tune . It's a slippery slope .
My two cents
George
Are you still using your aeromotive pump, and did you upgrade the wiring yet? re-reading this thread, I think I need to, while I do the 525 upgrade...
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      10-10-2014, 04:30 PM   #1203
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Quote:
Originally Posted by ZStig
Quote:
Originally Posted by gmd2003 View Post
It only flows better than stock at 80psi if it's getting enough power . Centrifugal pumps take a ton of juice apparently a stock system only provides 1/4-1/2 at best . The recommended Aeromotive wiring harness is a 30amp switch !!! Running them under power can make them fail early as well , which is why I was ok until recently . If ESS , AA, and VF say the regular pump is ok then I'm going back to it . Remember I was chasing the wrong pulley situation when I replaced mine . ( should have just changed my filter ) my two cents . Between my flywheel / clutch "upgrade " and this my new moto is if it ain't broke don't fix it lol . The problem of only improving one point of a stock system is the rest doesn't work together well . If you put in a lower bar fuel pressure gauge to make an aftermarket pump happy then you have to adjust the tune . It's a slippery slope .
My two cents
George
Are you still using your aeromotive pump, and did you upgrade the wiring yet? re-reading this thread, I think I need to, while I do the 525 upgrade...
Oh yeah Im still using the Aeromotive with stock wiring , it was the undersized injectors that originally can with the 525 kit that was the real problem ( the standard 445/500 injector) . I checked my fuel pressures and they were great so,once I ruled everything else out and looked at the injectors , and there it was all along . Undersized injectors caused ALL of my track related limp mode issues . The other improvements were nice and have helped I'm sure , but that was the key problem .
George
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      10-10-2014, 06:31 PM   #1204
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ok so I should be OK since we're getting upgraded injectors. Thanks, that saves me some re-wiring labor.

Does the S54 crankshaft pulley have the same specs as an E46 M3? I'm pretty sure
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      10-12-2014, 11:40 PM   #1205
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Quote:
Originally Posted by ZStig
ok so I should be OK since we're getting upgraded injectors. Thanks, that saves me some re-wiring labor.

Does the S54 crankshaft pulley have the same specs as an E46 M3? I'm pretty sure
Yes I believe the crank pulley is identical
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      10-13-2014, 09:59 AM   #1206
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Quote:
Originally Posted by gmd2003
Quote:
Originally Posted by ZStig
ok so I should be OK since we're getting upgraded injectors. Thanks, that saves me some re-wiring labor.

Does the S54 crankshaft pulley have the same specs as an E46 M3? I'm pretty sure
Yes I believe the crank pulley is identical
Could you please remind me what pulley combination you're using and what boost you are seeing?
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      10-13-2014, 07:45 PM   #1207
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Quote:
Originally Posted by ZStig View Post
Could you please remind me what pulley combination you're using and what boost you are seeing?
I can't remember the crank off the top of my head but i got the smaller 79mm pulley from ESS for the blower with my 525 upgrade. Needless to say i do have slippage problems so I'm thinking about getting a significantly larger supercharger pulley.I'm only seeing 7.5 psi max in 5th gear due to slip so i will prob make more boost with a larger blower pulley lol. I was just so happy to not be running lean i didn't want to mess with it for a bit .
George
Edit I have a 135mm crank pulley with the Vt525 kit.

Last edited by gmd2003; 10-13-2014 at 08:41 PM.
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      10-13-2014, 10:27 PM   #1208
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Quote:
Originally Posted by gmd2003 View Post
I can't remember the crank off the top of my head but i got the smaller 79mm pulley from ESS for the blower with my 525 upgrade. Needless to say i do have slippage problems so I'm thinking about getting a significantly larger supercharger pulley.I'm only seeing 7.5 psi max in 5th gear due to slip so i will prob make more boost with a larger blower pulley lol. I was just so happy to not be running lean i didn't want to mess with it for a bit .
George
Edit I have a 135mm crank pulley with the Vt525 kit.
This would mean that you will need a retune once there isnt slippage, assuming you want to keep the same afr's.
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      10-13-2014, 10:38 PM   #1209
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Quote:
Originally Posted by seank
Quote:
Originally Posted by gmd2003 View Post
I can't remember the crank off the top of my head but i got the smaller 79mm pulley from ESS for the blower with my 525 upgrade. Needless to say i do have slippage problems so I'm thinking about getting a significantly larger supercharger pulley.I'm only seeing 7.5 psi max in 5th gear due to slip so i will prob make more boost with a larger blower pulley lol. I was just so happy to not be running lean i didn't want to mess with it for a bit .
George
Edit I have a 135mm crank pulley with the Vt525 kit.
This would mean that you will need a retune once there isnt slippage, assuming you want to keep the same afr's.
my 7.5 psi in 5th is without slippage and is I believe due to me being completely catless with very high flowing headers . I'm mainly having issues with bad skip in 1,2,3 prob exacerbated by the speed which my car rips through those gears with 4:10's . I'm not getting out of the 5's in those gears .
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      10-14-2014, 03:03 AM   #1210
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Quote:
Originally Posted by gmd2003 View Post
my 7.5 psi in 5th is without slippage and is I believe due to me being completely catless with very high flowing headers . I'm mainly having issues with bad skip in 1,2,3 prob exacerbated by the speed which my car rips through those gears with 4:10's . I'm not getting out of the 5's in those gears .
The boost number that you see on your boost gauge is not actually a true representation of the actual boost that the engine is inhaling.

ESS designed this kit with 9 psi on 525 and stock everything with euro headers, this means in their setup 9 psi are not being inhaled in the head.
If your head is flowing a little better this number will drop.
If you install a US header for example with everything else stock and 525 kit you will read 9.5-10-10.5 boost.

Another factor that affects the boost reading is engine load, the more the engine is loaded, the more boost you will see on your gauge since the engine is not capable of swallowing that much boost. in your case, since you have a mechanical advantage 4.10 gears, the engine load will be slightly less in 5th gear and will therefore swallow more boost.

7.5 psi on 8000 RPM is not a bad number for this kit trust me.

If you have time, remove all your pulleys and have a machine shop make exact copies of them except with adding 2 ribs on CAD. It shouldn't be very hard.

I was contemplating drawing these in software and 3D printing them with titanium in some shop, won't cost a lot.
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