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Old 10-27-2008, 01:33 PM   #51
scramjett
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Quote:
Originally Posted by Tuned200 View Post
I make over 95 percent of my peak power above 6k and hold it. It makes me think its all in the tuning.
Hey I just saw your dyno. Whats holding you back that you're coming in around 275hp? Tranny, or something something else with the FXT drivetrain?
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Old 10-27-2008, 03:36 PM   #52
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Tranny. That's it.
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Old 11-02-2008, 01:38 PM   #53
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bump it up
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Old 11-06-2008, 09:35 AM   #54
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To the top. The wife and I are planning a return trip to the track this weekend. She is running it. I know she will beat me.
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Old 11-20-2008, 07:25 AM   #55
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Bump it.
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Old 02-19-2009, 07:45 PM   #56
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bump it up
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Old 02-19-2009, 09:03 PM   #57
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got my vf48 installed today. ill post numbers tuesday
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Old 02-20-2009, 01:03 AM   #58
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Good luck
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Old 02-20-2009, 10:05 AM   #59
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got my vf48 installed today. ill post numbers tuesday
Got my brand new VF48 months ago. . . Just ordered the TurboXS fmic for the 2008+ WRX's. . . I am just itching like crazy to get out my Stage II set up and be making some serious numbers. Going to be tuned for 93 octance and
E85. . .

I just really really really wonder if I should or need to go with a Walbro FP and 650cc injectors... Does ANYONE know if a fuel upgrade is needed to maximize the power with a VF48 on a 08 WRX??????????

Anyone want to trade an 18G or 20G turbo for my VF48!?
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Old 02-20-2009, 11:16 AM   #60
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in my07 WRX 1.25bar vf43 sti top mount 293whp 410wnm
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Old 02-20-2009, 11:24 AM   #61
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Quote:
Originally Posted by ATOMIC-SPORTSCARS View Post
in my07 WRX 1.25bar vf43 sti top mount 293whp 410wnm
This is a VF48 thread, though...

sotc
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Old 02-20-2009, 11:31 AM   #62
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Originally Posted by scramjett View Post
Got my brand new VF48 months ago. . . Just ordered the TurboXS fmic for the 2008+ WRX's. . . I am just itching like crazy to get out my Stage II set up and be making some serious numbers. Going to be tuned for 93 octance and
E85. . .

I just really really really wonder if I should or need to go with a Walbro FP and 650cc injectors... Does ANYONE know if a fuel upgrade is needed to maximize the power with a VF48 on a 08 WRX??????????

Anyone want to trade an 18G or 20G turbo for my VF48!?

My ride was perfectly happy with the stock injectors + a walbro, but I had a VF43.

With the VF48, you'll want Deatschwerks 740cc and a Walbro.

SInce you have an FMIC, your tuner should be able to really push that VF48 to the maxxxxxx.

It's silly to run out of injectors when you are paying top $ for your other mods and dyno tuning.

Get the DW 740cc, and you'll have enough headroom to run an even bigger turbo once the VF48 feels "too slow."

SOTC
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Old 02-20-2009, 12:05 PM   #63
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Quote:
Originally Posted by saab-on-the-cobb View Post
My ride was perfectly happy with the stock injectors + a walbro, but I had a VF43.

With the VF48, you'll want Deatschwerks 740cc and a Walbro.

SInce you have an FMIC, your tuner should be able to really push that VF48 to the maxxxxxx.

It's silly to run out of injectors when you are paying top $ for your other mods and dyno tuning.

Get the DW 740cc, and you'll have enough headroom to run an even bigger turbo once the VF48 feels "too slow."

SOTC
Saab, I know 650's would be good for a pump gas tune, 740's would give him more head room, which is good. But would the 740's be able to flow E85. I know if I did E85, I would need 1000's for a balls to the wall tune.
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Old 02-20-2009, 01:50 PM   #64
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Saab, I know 650's would be good for a pump gas tune, 740's would give him more head room, which is good. But would the 740's be able to flow E85. I know if I did E85, I would need 1000's for a balls to the wall tune.
Hmm, good advice and its appreciated. I didn't realize with E85 that you need bigger injectors than on 93. That's probably why gas mileage stinks from what I've heard about E85.

I'm also contemplating getting an EWG too since from what I understand, at the higher RPM's it helps the engine breath better and therefore boost doesn't fall off as rapidly with an internal gate.

Either way, I cant wait to finally be over 300hp!
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Old 02-20-2009, 01:59 PM   #65
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I ran out of flow with 820's and an 18g running e85.... If it helps.
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Old 02-20-2009, 02:30 PM   #66
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ok so im a newb but i was deffinitly thinking of going for a vf48 for my 08 wrx and i dont know what i need to make it run smoothly

im just trying to add a lil bit more hp im not trying to make it a track car but i was wondering if i need injectors or anything else for that matter?

thanks...
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Old 02-21-2009, 12:16 AM   #67
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can someone explain to me why there even needs to be a vf48 thread? they're all the same essentially (yes i know some have ball bearing centers and some have a tiny difference in wg size or somthing)

the 30,34,39,43,48 are all so close to identical in performance, the differences in the tunes themselves can make all the difference.

example: i ran on my first (and only try, didnt want to break anything) a 12.8 @ 109 on a blown vf39 (cold side oil leak) on a opensource tune by me.

similar car, a 06 saabaru aero with a vf48, and a pro tune, ran a 12.6 @ 109. mentioned earlier in this thread (hello disc0).

the mph tells the story here, and i expect to be further supported when i run my new turbo ( vf30) to the same trap or higher.

am i missing somthing? or is all of the evidence pointing toward, very similar performance, to the point where we might as well be saying who was the tuner vs what turbo was that.
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Old 02-21-2009, 02:36 PM   #68
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Look at a vf48 graph smart guy. Power holds til redline where it falls off on the 39/43 turbos.


And the reason we have this thread is why not. If you have nothing to add don't post with an attitude. Sorry if I seem harsh but this is for people with the vf48 to discuss their set ups/times.

I don't minds 39/43 people talking about their stuff too. But your attitude is not needed.
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Old 02-21-2009, 04:09 PM   #69
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there is nothing mechanically different about the vf48 which enables it to hold power to redline. over the vf39, vf30,vf43, who all have the same RF55 comp wheel.

again, its all in the tune. the vf48 is no miracle vf turbo. if you add timing as boost falls off, volia, power loss does not taper to redline.

i dont understand why you need to attack me, when in fact you are defending nothing but one good tune.

and why not? you can have a discussion with many people who have had great success with the vf39, vf30, vf34 and learn a great deal. those very very similar turbos have been around for quite some time, and people have found setups that make the most of them.

and im not trying to have an attitude, i just want to know why these turbos are different, mechanically, than any of the others. if you can tell me how mechanically the vf48 is different than the others, i'd like that.


in fact, look at this vf39, same shop.


http://forums.nasioc.com/forums/show...highlight=vf39

the non ewg, 93 octane tune looks eerily similar to.. the vf48 turbo run. no drop off






which one is which?

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Old 02-21-2009, 09:19 PM   #70
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Quote:
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which one is which?

Bottom one is the 39.

GTFO
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Old 02-21-2009, 09:45 PM   #71
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gz, you read page 1.

why do they make the same power?
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Old 02-22-2009, 03:49 PM   #72
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Again, why post if you have nothing to add. Its the internet, and there is nothing wrong with having a topic on the vf48 or any turbo

I'm on my blackberry so I can't see the graphs. If you didn't notice my car is a s4eat so how are they making the same power since I'm using an auto? More drivetrain loss?
So please gtfo. Thanks man.
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Old 02-22-2009, 03:56 PM   #73
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The exact words from that tuner is the vf48 is a better turbo and it holds boost better til redline. Maybe Jorge will comment and put you in check.
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Old 02-22-2009, 06:37 PM   #74
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What kind of numbers are you guys getting on a mustang dyno or one of the lower reading dynos?
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Old 02-24-2009, 09:45 AM   #75
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^I got no idea about other dyno #s
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