The VF48 thread

[dnorton]

Just installed my VF-48 on my 07 WRX Wagon with these mods. Lager TMIC,650cc Injectors,TBE With high flow cat, Exhaust Mani PnP, Crossover pipe GS, Uppipe, 255 Fuel pump, Intake Man and TB PnP with TGVs Deteted, EBC, 8mm spacers between the TGVs and heads plus a Pro-Tune with OS Equals > 280HP and 330TQ On a Mustang Dyno with 18lbs of boost and I think 75 to 80% duty cycle.

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[sleeperxt06]

Nice numbers! What was your peak boost?

[dnorton]

Originally Posted by dnorton

Just installed my VF-48 on my 07 WRX Wagon with these mods. Lager TMIC,650cc Injectors,TBE With high flow cat, Exhaust Mani PnP, Crossover pipe GS, Uppipe, 255 Fuel pump, Intake Man and TB PnP with TGVs Deteted, EBC, 8mm spacers between the TGVs and heads plus a Pro-Tune with OS Equals > 280HP and 330TQ On a Mustang Dyno with 18lbs of boost and I think 75 to 80% duty cycle.

I wasn't 100% satisfied with my last tune even tho the numbers where there it just wasn't right. It would back fire and my gas milage was down so I took it to the best guy for tuning on the south east coast, Doug fron TopSpeed. I drove to Tampa to S&R Performance where Doug was tuning for a couple of days. The first run the car was close to what it was from my last tune on the Mustang Dyno,281 hp and 331 tq when Doug finished he had 310 hp and 350 tq at 19 boost > 18 at redline. The car drives like it should have. No more back firing and boy let me tell ya, it's a blast to drive. I'm here to tell you it's all in the tune and Doug is the man who knows how to tune a Subie

[samo22]

Originally Posted by jaegmeister

as of 6/18/10 Grimmspeed EWG installed and retuned on the same dyno-made 280 awhp, up by 16 hp

May I please view the retuned dyno graph with ewg?

[jaegmeister]

Originally Posted by samo22

May I please view the retuned dyno graph with ewg?

Sure, but I only got a hard copy, let me ask Mike if he'll email me a jpg like the last tune. if he's too busy (which I wouldn't be surprised) to get back at me anytime within the next day or two I'll post a pic of the printout...

[makeawish]

let's see some more 2.5l vf48 dyno graphs and mod lists ..please.



btw...It's not installed yet, but I chose a vf48 for my 2006 wrx because the 5 speed tranny would be in serious risk if I went bigger. I'm on a low budget and given the small issues with the vf39 and vf43 I looked for a vf48 or an hta68 to replace the td04.

I found a good low miles vf48 for the current going rate, right here on NASIOC from another member (thx). To my knowledge, the vf48 has no issues, other than a view folks who say it drops off at redline.

I'll post some numbers in a few weeks...

[makeawish]

2006 wrx... VF48....307/341

[Rudywrx04]

^Wow

[hammyt]

That's pretty typical numbers for a 2.5L with a VF48 and good supporting mods. Nice power. Seeya later 5 speed =D

[shatteringstar]

Originally Posted by hammyt

See ya later 5 speed

no way, it'll be fine.

and MakeAWish, whats ur mod list?
i have a 06 WRX and my #'s were a bit lower than that. 285/305

[mapleleaf]

Originally Posted by hammyt

That's pretty typical numbers for a 2.5L with a VF48 and good supporting mods. Nice power. Seeya later 5 speed =D

I had an 06 WRX on meth with 330whp and 350tq, 5 spd never missed a beat. It certainly helps if you have half a clue how to drive.

[hammyt]

I've also seen on 06 WRX w/ VF48 put down 316/360, run 12.2 in 1/4, do lots of autox's, but guess what one time in third gear at 2/3 throttle and the tranny blew. It's not a matter of if its a matter of when. I completely agree that driving it well can definitely make the transmission last longer, but it won't last forever under that power, obv.

[makeawish]

Originally Posted by shatteringstar

no way, it'll be fine.

and MakeAWish, whats ur mod list?
i have a 06 WRX and my #'s were a bit lower than that. 285/305

invidia uppipe
jna intake
gimmick inlet
vf48
sti tmic
invidia downpipie
jna catback
walbro 255 fuel pump
1 step colder ngk plugs
dw 750 injectors
v2 access port

[hammyt]

good list. how hot does your STi TMIC get? I have an almost identical setup, cept 2.0L and the STi TMIC is just barely enough to keep her cool.

[makeawish]

Originally Posted by hammyt

good list. how hot does your STi TMIC get? I have an almost identical setup, cept 2.0L and the STi TMIC is just barely enough to keep her cool.

it's early, less 100 miles lol... but so far she seems fine, I have the proper scoop splitter / bellows as well. I may custom fabricate a heat shield to prevent some heat soak, if it looks like a problem.

btw... it's been 90 degrees plus around here in CT, my tune day included.

[manitou]

Originally Posted by hammyt

I've also seen on 06 WRX w/ VF48 put down 316/360, run 12.2 in 1/4, do lots of autox's, but guess what one time in third gear at 2/3 throttle and the tranny blew. It's not a matter of if its a matter of when. I completely agree that driving it well can definitely make the transmission last longer, but it won't last forever under that power, obv.

Yep, It's just a matter of time on the 5 speed grenading with a good tune and supporting mods and a VF48. I speak from experience, on the 3rd 5th gear pull one night I totally stripped the 5th gear set, I mean stripped clean. 5th gear, yeah it's almost hard to believe. I had my GPS running and it recorded 156 MPH. The VF48 can supply some grunt for sure. I now have a complete 07 STI 6 speed/ R180 swap with working DCCD pro in my FSTI.

[scramjett]

Originally Posted by manitou

Yep, It's just a matter of time on the 5 speed grenading with a good tune and supporting mods and a VF48. I speak from experience, on the 3rd 5th gear pull one night I totally stripped the 5th gear set, I mean stripped clean. 5th gear, yeah it's almost hard to believe. I had my GPS running and it recorded 156 MPH. The VF48 can supply some grunt for sure. I now have a complete 07 STI 6 speed/ R180 swap with working DCCD pro in my FSTI.

That's a lot of dough to drop on a transmission just to run a smallish VF series turbo. If I had a built tranny, I'd for certain drop in something like a dom2/3 and take advantage of the tougher tranny. The VF is a good turbo and a good upgrade for a non-sti, and I've run with one for a little while and kno from experience. But my god man, I wouldn't spend upwards of $6k on supporting mods and still keep the vf. Hopefully my 5spd can withstand the 20G and taking down the occasional Mustang/Camaro/Vette. Hang loose my fellow Michigander!

[manitou]

Well it's not just for the VF48. I have a complete STI converted Forester. I am not going to install a bigger turbo than the VF on the stock block, going bigger is sure route to blowing the motor. After the bullet proof motor build then that's a different story. Good luck with your 20g swap fellow Michigander!

[STiXXX]

Originally Posted by manitou

Well it's not just for the VF48. I have a complete STI converted Forester. I am not going to install a bigger turbo than the VF on the stock block, going bigger is sure route to blowing the motor. After the bullet proof motor build then that's a different story. Good luck with your 20g swap fellow Michigander!

If you have "a COMPLETE STi swap" then "bigger than a VF" certainly WON'T "blow" the motor.
If you're scared, drop in some CP forged pistons. If you're terrified, sleeve the block.

[manitou]

Originally Posted by STiXXX

If you have "a COMPLETE STi swap" then "bigger than a VF" certainly WON'T "blow" the motor.
If you're scared, drop in some CP forged pistons. If you're terrified, sleeve the block.

The block's the same, STI and XT. Cast pistons and with 80k on it. Bigger turbo NOT! Read my last post "bullet proof build" = bigger turbo, yes. Pretty much everyone that goes bigger on the stock block roaches their motor. Don't need sleeves unless you're going very big otherwise it's a waste.

[jerry curl]

2003 WRX Stock EJ205
On a VF39 at 18.8 lbs, i made 277 AWHP 290 torque Via Mustang Dyno
Invidia 1 piece Header with uppipeInvidia 3in V2 DP no cat
Invidia N1 Exhaust w/ Resonator
Injen Short Ram Intake
Sti 565 Pinks
Ebay FMIC
Cobb 2.0 Protune by Carlos Ramini on Shell 93 pump
Mishi. Rad.
07 STI Speed with sti Flywheel and Clutch
NGK 1 Step Colder plugs
New Dayco Sepentine belts
Hallman MBC
The car has not been on the Dyno Since i put the VF48 on about 20K ago. But the car has been tuned at 22.4 lbs of boost and pulls much harder to redline during WOT. need to get on a Dyno and get some results.

[chlnOrSlpn?]

Originally Posted by manitou

The block's the same, STI and XT. Cast pistons and with 80k on it. Bigger turbo NOT! Read my last post "bullet proof build" = bigger turbo, yes. Pretty much everyone that goes bigger on the stock block roaches their motor. Don't need sleeves unless you're going very big otherwise it's a waste.

You'll be fine, I drove 40k+ miles on my stock block and stock clutch STi with two GT30R's and two 35R's. 93 octane, 23psi and not a doubt in the world. No, I didn't baby the car, I drove the car pretty hard any chance I could... Unfortunately I had to sell the car for financial reasons, but it had 63k miles and healthy.

After looking at this thread, I may consider a VF48 on my 2.0 WRX for the time being...for the money, it's definitely a good upgrade.

[STiXXX]

I considered a 48 for thr WRX, but after careful consideration, I'm going with a twin-scroll 30R for the '05 STI, and the WRX is getting my (totaled by Ex last year) 34K '06 LGT motor with my STI's current FP Green/Injen FMIC/850cc inj./walboro setup.
The WRX will have to be de-tuned to 300WHP at that point, to protect the 100k glass tranny while I save up for a new 6MT/DCCD Pro for it, but it'll be big fun for next winter, at any rate.
So far, so good.
At only $6K, the WRX left me money to play with-knock on wood, lol!!


XXX

[WRX_FTW]

does anyone know what i can expect from this setup with a vf48...? i bought an 04 sti with a spun bearing and blown vf39, so im replacing both.

specs:
04 sti, brand new short block
perrin crank pulley
oem gaskets/arp head studs
zerosports thermostat (160 F)
and on 93 octane

these came with the car and i dont know the brand or really anything about them: I THINK 3 inch exhaust from turbo back, im assuming a stock uppipe, and aftermarket intake with a cold air hose ran to fog light cover

im pretty sure everything else is/will be stock... kinda tired right now and cant think.

i will be using an hks ebc and opensource tune. i know it depends on the tuner and several other things but im just looking for a ball park figure.

[makeawish]

Originally Posted by WRX_FTW

does anyone know what i can expect from this setup with a vf48...? i bought an 04 sti with a spun bearing and blown vf39, so im replacing both.

specs:
04 sti, brand new short block
perrin crank pulley
oem gaskets/arp head studs
zerosports thermostat (160 F)
and on 93 octane

these came with the car and i dont know the brand or really anything about them: I THINK 3 inch exhaust from turbo back, im assuming a stock uppipe, and aftermarket intake with a cold air hose ran to fog light cover

im pretty sure everything else is/will be stock... kinda tired right now and cant think.

i will be using an hks ebc and opensource tune. i know it depends on the tuner and several other things but im just looking for a ball park figure.

welcome to the VF48 club

I like the guessing game...

let's see you've got:

sti uppipe (catted I think, not sure)
vf48
sti tmic
cai
550 injectors
turbo back
hks ebc
stock fuel pump
stock plugs
pro tune

I'll say 285hp / 309tq, mustang.

Good luck with tune..post the real numbers.