Max Capacity Posted April 17, 2012 Share Posted April 17, 2012 I went with the vf52 over the vf40. Very happy with it. FWIW, I also replaced the oil return line at the same time. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
f1anatic Posted April 17, 2012 Share Posted April 17, 2012 this thread is just like the other one. Get another VF40 and call it a day. Anything beyond that would require a tune and in time a hole set of parts including but not limited to a clutch etc. I don't see the point of going VF52 or 16G if you are going to keep the performance the same. And even if you are getting the VF52, it still requires a tune. We cannot help people with their indecision in more than one thread. Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 17, 2012 Author Share Posted April 17, 2012 thanks for all the responses. I'm going to have a PPI and compression/leakdown tests done this weekend to get a baseline for where my car is at. Hoping the results will make it clear what turbo to go with. More power would be nice, which is why I would even consider the VF52. But not if its going to shorten the life of the engine. Hence why I'm searching for answers here. there is also the factor of which is more fun under the speed limit and on normal roads? VF40 does spool crazy quick. I'd hate to spend $2k on a bigger turbo and tune only to find out I have shifted the turbo outside of the powerband I use daily. Link to comment Share on other sites More sharing options...
bmx045 Posted April 17, 2012 Share Posted April 17, 2012 thanks for all the responses. I'm going to have a PPI and compression/leakdown tests done this weekend to get a baseline for where my car is at. Hoping the results will make it clear what turbo to go with. More power would be nice, which is why I would even consider the VF52. But not if its going to shorten the life of the engine. Hence why I'm searching for answers here. there is also the factor of which is more fun under the speed limit and on normal roads? VF40 does spool crazy quick. I'd hate to spend $2k on a bigger turbo and tune only to find out I have shifted the turbo outside of the powerband I use daily. no, the results of a compression test will confirm or deny the need for engine repair, not the type of new turbo to put on. any turbo greater than stock will shorten the life of the engine, to a degree...it depends greatly on the tune and the driving style. even going stage 2 on stock turbo will reduce the engine "life". more power through an engine = greater chance for increased rate of wear and/or the possibility of failure. Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 17, 2012 Author Share Posted April 17, 2012 I was more or less saying. it should be clear if I need to spend money on "other" things or need to consider buying a new car soon rather then bolting on more power. so YES it will make it clear what turbo to buy. Stock being the answer if other things are in need of attention. upgraded being the answer if everything looks amazingly good. There is only so much money I'm willing to spend on this car. Link to comment Share on other sites More sharing options...
bmx045 Posted April 17, 2012 Share Posted April 17, 2012 There's no right answer with you is there... Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 18, 2012 Author Share Posted April 18, 2012 jesus bro don't take it personally that I don't listen to you... Link to comment Share on other sites More sharing options...
bmx045 Posted April 18, 2012 Share Posted April 18, 2012 Bro. Bro. You know I'd neva bro Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 18, 2012 Author Share Posted April 18, 2012 I just need piece of mind. VF52 sounds like a good way to go if I can afford it. If we find some big problems during the PPI I may cancel the whole preventative turbo replacement plan altogether. We'll see though. My car is almost paid off and anything short of a new S4 sounds like a step down so I'm planning on making this car real fun to drive for a long time and try not to think about the giant number on the odometer too much. Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted April 18, 2012 Moderators Share Posted April 18, 2012 FYI, if you're compression test comes back bad that does not tell you to just stick with a stock turbo as a replacement. From the sounds of things (your goals and willingness to deal with various automobile issues, especially performance related) that tells you to go trade your car in for a new vehicle of your choice. "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 18, 2012 Author Share Posted April 18, 2012 of course. I understand that It tells me I should be saving for a new short block or an STI swap rather then replacing a turbo that is currently working fine. All a PPI is supposed to do is help me prioritize Link to comment Share on other sites More sharing options...
Max Capacity Posted April 18, 2012 Share Posted April 18, 2012 I say get a vf52 and keep the stock boost pill. I put a smaller pill in for my 21psi. The wagon is pretty quick on the back roads. I don't see the need for a bigger turbo and than bigger injectors and fuel pump. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
bmx045 Posted April 18, 2012 Share Posted April 18, 2012 of course. I understand that It tells me I should be saving for a new short block or an STI swap rather then replacing a turbo that is currently working fine. All a PPI is supposed to do is help me prioritize an sti swap? why would you do all that work? pointless.... Link to comment Share on other sites More sharing options...
LGT For ME Posted April 18, 2012 Share Posted April 18, 2012 I still think of the VF52 as a stock upgrade considering its an oem part for the STI. I've been researching lately why Diesel turbo's last so much longer then gas ones and the reasons I've been finding lead me to believe a larger turbo may be more reliable. My goal is achieve somewhere between stock LGT and stock STI power with a turbo that spins slower then the VF40 Anybody know if the VF52 will fit under the VF40 heat shield? I just added a V52 to my car and I'd say its def a upgrade if tuned, and it does spool about 200-300 rpm's later which isnt a bad thing, my first tank of gas I got the same if not a little better mpg as normal DD driving I'm not getting in big boost as frequently, but when you do:cool: Link to comment Share on other sites More sharing options...
Nrw Posted April 18, 2012 Share Posted April 18, 2012 an sti swap? why would you do all that work? pointless.... to be fast like STI Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 18, 2012 Author Share Posted April 18, 2012 an sti swap? why would you do all that work? pointless.... So that the engine would match my wheel center caps....duh! Link to comment Share on other sites More sharing options...
bmx045 Posted April 18, 2012 Share Posted April 18, 2012 you mean an sti shortblock. that is not an sti swap, different things Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 19, 2012 Author Share Posted April 19, 2012 I didn't really specify. keeping my options open Link to comment Share on other sites More sharing options...
20lgt06 Posted April 21, 2012 Share Posted April 21, 2012 vf52 + fuel pump+tune should yield upwards 290-300whp go with the vf52-- im running one Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 22, 2012 Author Share Posted April 22, 2012 inspection came out good. no significant issues other then the already known suspension and clutch wear items that I'm already planning on replacing. Compression test came out as 130, 135, 135, 130. Is that pretty good? Mine is an 05 and I know the 05-06 has lower compression then the 07-09 models since the 05-06 uses STI heads. I think it was 8.2:1 on 05-06 vs 8.5:1 on 07 and newer Link to comment Share on other sites More sharing options...
bmx045 Posted April 22, 2012 Share Posted April 22, 2012 compression test is fine Link to comment Share on other sites More sharing options...
nwsurfwakeskate Posted April 22, 2012 Author Share Posted April 22, 2012 anybody know what it should be when the motor is new/fresh? at what point is a motor considered tired? 100psi??? I know there's a lot of factors that effect the number on the test and that its more about the +/- difference between all 4 cylinders. just kinda curious how much wear I'm showing. VF52 will likely go in next month after some more savings have accumulated. Link to comment Share on other sites More sharing options...
bmx045 Posted April 22, 2012 Share Posted April 22, 2012 my 2012 sti sb pulled 140's with lgt heads.... 130-5 isn't a problem and i wouldn't lose sleep over it. your car is fine.... get a turbo, proper accessories, a proper tune and tassles for your mirrors and be on your merry way.... Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted April 23, 2012 Share Posted April 23, 2012 ^^^ So my 194K motor is running better then New, compression check, cylinders; 1) 145psi, 2)150psi, 3)145psi, 4)147psi. Mike Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
lucas569 Posted April 23, 2012 Share Posted April 23, 2012 I say get a vf52 and keep the stock boost pill. I put a smaller pill in for my 21psi. The wagon is pretty quick on the back roads. I don't see the need for a bigger turbo and than bigger injectors and fuel pump. I can attest to this (rode shotgun) wicked fast wagon, the power feels more linear. the vf40 feels like it just sits you back but then falls flat. Link to comment Share on other sites More sharing options...
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