Hi, im looking to fit a VF28 on my MY03 WRX PPP with sti pinks, de cat up-pipe, high- flo cat, 3 port solenoid and a remap from duncan(racedynamix). I was originally going for a vf35 but cannot find a good one and duncan has found me a good low mileage vf28 from a P1 that was run on standard boost, now i understand from a little research that it will spool a fraction quicker than the vf35 and although may not make as high bhp it will reach what im looking for. What i would like to know from anyone in the know or has had one, will it be capable of holding strong boost to the redline and not run out of puff at high rpm? can anyone help?? many thanks

 

Mate, i am looking at doing something similar with a classic. From my investigations you might want to look at a VF22/3 if you are looking for some big bangs. Plus i want the VF28 so send me your mate's contact details

 

look at this mate http://www.imprezasport.net/forums/i...&mode=threaded

 

im running a vf28 on my classic with fmic,full decat,power fc, injectors,fuel pump etc
and have no problems with the turbo running out at high rpm pulls like a train to the redline,and will be getting removed in about a month for a vf35 and 570cc injectors as im going for a little more power.

 

ha ha get your own! im only after 300-320 with a strong pull all the way and quick spool.

pete 96- what sort of boost levels and power are you running? sounds like the vf28 will do exactly what i need then

 

use a vf23 strong pull all the power band till 8400 redline

 

I can vouch for a VF23 made 330/320 on a MY99 RB5 along with FMIC, 3" de-cat and Andy F ecutek map. I believe a VF28 will make just slightly less so you should get 320 no probs

 

mine is doing that with tmic... still with yellow injectors and oe fuel rails...so need to be upgraded

 

techno brat im running 320s with 1.35 bar boost

 

sounds like the vf28 it is then, i wanna peak at about 1.35 and hold about 1.25 and not drop off like my td04.

 

I'd forgotten I posted these and could have done with that info a couple of days back


Running a vf28 on a classic here... at the moment standard top mount and the software estimated it at 313/303

 

thats the exact kind of figures i would like tbh.

 

I had a vf28 on a 1999 uk turbo,with decat , sti tmic,3 port boost solenoid,straight through centre,samco induction hose,& vortex backbox.The car was mapped by bob rawle and dispite a knackered lambda still made 320bhp - 318 lb/ft and was hitting 1.4 bar.

I now have a model year 2000 uk turbo with the exact same mods as my earlier car, but have recently changed the vortex for a ninja2, and i am off to see bob next saturday for another tweak to my existing map,and have been told that 330 bhp is about the max you can expect to see from a vf28 with normal mods.
It does spool later than the td04,but it can hit full boost by 3,000rpm,and stay there till you hit the 7100 rpm rev limiter,unlike the td04 which starts letting go after 5,500 rpm

 

nice one midnight, sounds good to me! its the pull to the redline i want to make the most of the 5 speed box. does anyone know the difference's of the vf28 to the vf 35? i hear it has a bigger exhaust housing than the vf35 but a smallin compressor housing? in the real world in terms of what the turbo responds/work like whats the differences?

 

The 35 has a smaller compressor housing than the 28 (p15 v p18?) but the 28 is still a very good turbo and would suit your needs perfectly for the 300-320bhp your after
http://importownersclub.aceboard.com...urbo-specs.htm

Tony

 

I asked the same question - see here:-

STi 5 OEM HARDWARE'S MAPPED BHP POTENTIAL...???

 

cheers for that tony- if the 35 is smaller how comes it tends to make a few more bhp? is that down to the inlet compressor? yeah it does sound spot on for my needs providing it holds the boost well to the redline

 

i made 324/315 with a vf28, held all way.

 

nice figures- what where your mods? and what model car?

 

bump- the more thoughts/experience the better

 

Not really needed,the vf 28 was STD equipment on the P1,and that can pull 1,000 rpm more than your STD Uk turbo Also the half a dozen responses you have received on this post from various owners, tell you that the turbo will do all that you require,if you add to the fact it can be bought cheaper than a vf35,will spool slightly faster and give you your desired bhp , next thing is get it fitted to the car & book your remap IMHO.

Before I bought mine I was adamant I was going to stick with my td04, 1 trip in my mates STD P1,and a quick pm to 'splitpin' for advice regarding bhp output, and I was in Kent 2 days later picking up a mint vf28 . It was a no brainer for me and i never looked back as I sold my td04 for the same money as the vf28.

 

yeah your right mate- i just ask too many questions lol. i have all my supportin mods and my mapper is on stand-by, i just need to arrange picking the turbo up and getting the banjo bolt. i just want to get it right thanks for the help guys

 

Banjo bolt? Tell me there isn't something else I need???

 

VF28 is a great turbo and makes a great upgrade to achieve a pretty quick 2ltr Newage WRX ! I have been in a bug WRX round Snetterton with a VF28/injectors etc...sounds great and pulls very well indeed.

 

yeah lol- being a roller bearing it needs the restricted banjo bolt that goes into the head, its about £20+vat from subaru, part number 14445AA002.

53wrx- yeah thats what im aiming for. jus need to get it done now lol

 

Regarding the banjo bolt the part no is correct,i paid £16.00 from subaru uk.The bottom banjo bolt that goes into the block, according to subaru uk does not need to be changed as although it has a different part no,it is the same diameter as the std td04 item.

 

Once again a beacon of light and knowledge, thanks mate

 

mods, vf28, fmic, 440 inj, H+S de-cat d/pipe and centre section, hks hi silent power back box, lightened flywheel, remap, apexi avcr boost controller! er think that was it pal

all on a 98 s reg scoob so had a apexi ecu and power commander as you cant map a 98 ecu!

 

thats strange ive done a fair bit of research on the banjo and the top banjo(turbo end) is the same(not in all cases but doesn't matter) but the bottom banjo is def different, roller bearing turbo's nedd the smaller hole restrictor. a good friend that works for subaru gave me the price for that banjo today. both he and i came up with that number after research, it also has a filter in it unlike the td banjo. who knows what subaru where doin with the banjo's but thats the number used with the vf28 on a p1 so prob best to fit one. but this is just my findings

 

Alright guys

I have got v5 sti with vf28 turbo

fmic
decat
induction kit
simtek ecu

and it boosts to 1.4 bar

and it makes 336 bhp!

cheers