VF28 potentional?
13 July 2010, 08:06 PM
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VF28 potentional?
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
13 July 2010, 08:28 PM
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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 
13 July 2010, 08:33 PM
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13 July 2010, 08:35 PM
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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.
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.
13 July 2010, 09:05 PM
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pete 96- what sort of boost levels and power are you running? sounds like the vf28 will do exactly what i need then
13 July 2010, 09:07 PM
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13 July 2010, 09:27 PM
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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
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13 July 2010, 10:29 PM
#11
look at this mate 
http://www.imprezasport.net/forums/i...&mode=threaded
http://www.imprezasport.net/forums/i...&mode=threaded
Running a vf28 on a classic here... at the moment standard top mount and the software estimated it at 313/303
14 July 2010, 02:43 AM
#13
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
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
14 July 2010, 08:29 AM
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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
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
14 July 2010, 10:35 AM
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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
http://importownersclub.aceboard.com...urbo-specs.htm
Tony
14 July 2010, 10:45 AM
#16
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
STi 5 OEM HARDWARE'S MAPPED BHP POTENTIAL...???
14 July 2010, 11:47 AM
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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
http://importownersclub.aceboard.com...urbo-specs.htm
Tony
14 July 2010, 04:09 PM
#21
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.
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.
Last edited by midnight; 14 July 2010 at 04:15 PM.
14 July 2010, 04:23 PM
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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.
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.
thanks for the help guys
14 July 2010, 06:15 PM
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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
53wrx- yeah thats what im aiming for. jus need to get it done now lol
14 July 2010, 06:59 PM
#26
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.
14 July 2010, 07:08 PM
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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!
all on a 98 s reg scoob so had a apexi ecu and power commander as you cant map a 98 ecu!
14 July 2010, 07:35 PM
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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
