what turbo is the best
13 October 2012, 10:36 PM
#6
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13 October 2012, 10:55 PM
#9
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new age blob eye with mods going on next week
japspeed intercooler
walbro fuel pump
pink injectors
full miltek dacat exhaust
decat up pipe
prodrive 3 port
kn induction kit
blitz dump valve
think thats it just need a turbo to meet the mods to get the most out of it
japspeed intercooler
walbro fuel pump
pink injectors
full miltek dacat exhaust
decat up pipe
prodrive 3 port
kn induction kit
blitz dump valve
think thats it just need a turbo to meet the mods to get the most out of it
13 October 2012, 11:08 PM
#12
vf43 is also a good turbo,again similare power to vf35. the 43 normally fetches around £350.
also a vf34 is good for that power but quite rare and quite costly.
is it a wrx or sti?
also a vf34 is good for that power but quite rare and quite costly.
is it a wrx or sti?
13 October 2012, 11:13 PM
#14
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14 October 2012, 11:31 AM
#18
If it's a 2.0 WRX it should handle 350bhp or slightly more without any problems, although avoid multiple full bore launches if you don't want to destroy your gearbox.
If you're going into the higher 300's (370+) with a WRX, it's probably advisable to go for a stronger engine build and a 6 speed gearbox from an STI, although WRX engines have been known to withstand 400bhp for a number of years (I know of one which was running over 400bhp for a while before the owner eventually went to a 2.35, but the engine is in a classic now, and it's still going today...just
); a lot of it depends on your luck, and whether you can afford to be without the car if the engine does go pop!A vf34 or 35 should get you to around 350, although the majority I see tend to max out between 320 and 340.
Removing your TGV butterfly valves on a WRX can free up to 10-20bhp extra so it's a mod worth doing if you have the money.
OR just buy an STI inlet manifold and have your mapper sort it out (which is what a friend did). His then made 350bhp on an STI top mount, injectors and VF35.
The FMIC is tbh not required to get you to 350bhp and you'll lose some of the lower down torque available by fitting it, but it will help you to make higher figures. However, the limiting factor will be the turbo.
I'd be tempted to try a TD05 18g from the well regarded suppliers (e.g. Scoobclinic's SC38, Harvey or Andy Forrest do them too) rather than the traditional method of sticking a vf30, 34 or 35 on the car.
You'll still get nice early spool but you'll also get far more midrange and top end than the vf turbos listed.
Should get you to 360 and the engine should cope with that ok, although any of the tuners above will tell you if I'm not correct.
Last edited by MrNoisy; 14 October 2012 at 11:39 AM.
14 October 2012, 11:41 AM
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well after that i will be sticking to the 350bhp mark lol. i do have a td05 16g which has been converted to front entry. do you think that turbo would be suitable for 350 mark
14 October 2012, 11:57 AM
#20
I've seen cars make up to 360 on a 16g, and Scoobyclinic's own SC36 is in fact a 16g (with billet turbine I believe).
Stick with your converted 16g, and do the TGV delete mod and I reckon you'll see 350, or even 360 with that FMIC.
Last edited by MrNoisy; 14 October 2012 at 11:58 AM.
14 October 2012, 01:20 PM
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i have a vf 34 on my 99 jdm wrx which is pushing upwards of 350 and is a great turbo i have just had an sti 7/8 bottom end put onto genuine p1 heads though to make it stronger.
14 October 2012, 07:31 PM
#26
15 October 2012, 08:15 AM
#27
A 34 actually spools slower than a 35, but a good 18g/20g with ported housing should notice little difference.
Incidentally, if you don't believe me I can show you my two dyno graphs of my vf35 and then subsequently my TD05 20g.
The dyno shows the car makes full boost at EXACTLY the same point as the old vf35, and continues to pull throughout the rev range, where a 34 or 35 would run out of steam.
The only difference was that I've fitted a set of Harvey headers and up pipe.
I went from a TD04 to a VF35 and was disappointed in the lack of mid range and top end hence my recommendation to go 16 or 18g, as these will usually make more torque and mid/top end power than their IHI VF equivalent.
As I said the alternative is stick with the 35 and remove TGV's which will get the best out of that turbo.
VF34 is overpriced for what it is if you ask me. If it was a choice between that and a 35 I'd go 35. No way is the 34 worth the price tag it gets thrown about with.
15 October 2012, 09:48 AM
#28
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That's incorrect. A 16g is a comparable turbo to a 34/35.
A 34 actually spools slower than a 35, but a good 18g/20g with ported housing should notice little difference.
Incidentally, if you don't believe me I can show you my two dyno graphs of my vf35 and then subsequently my TD05 20g.
The dyno shows the car makes full boost at EXACTLY the same point as the old vf35, and continues to pull throughout the rev range, where a 34 or 35 would run out of steam.
The only difference was that I've fitted a set of Harvey headers and up pipe.
I went from a TD04 to a VF35 and was disappointed in the lack of mid range and top end hence my recommendation to go 16 or 18g, as these will usually make more torque and mid/top end power than their IHI VF equivalent.
As I said the alternative is stick with the 35 and remove TGV's which will get the best out of that turbo.
VF34 is overpriced for what it is if you ask me. If it was a choice between that and a 35 I'd go 35. No way is the 34 worth the price tag it gets thrown about with.
A 34 actually spools slower than a 35, but a good 18g/20g with ported housing should notice little difference.
Incidentally, if you don't believe me I can show you my two dyno graphs of my vf35 and then subsequently my TD05 20g.
The dyno shows the car makes full boost at EXACTLY the same point as the old vf35, and continues to pull throughout the rev range, where a 34 or 35 would run out of steam.
The only difference was that I've fitted a set of Harvey headers and up pipe.
I went from a TD04 to a VF35 and was disappointed in the lack of mid range and top end hence my recommendation to go 16 or 18g, as these will usually make more torque and mid/top end power than their IHI VF equivalent.
As I said the alternative is stick with the 35 and remove TGV's which will get the best out of that turbo.
VF34 is overpriced for what it is if you ask me. If it was a choice between that and a 35 I'd go 35. No way is the 34 worth the price tag it gets thrown about with.
15 October 2012, 11:34 AM
#29
The Subaru 4 U sales blurb seems to support this too.
The VF35 is the standard turbocharger used on the JDM Subaru Impreza WRX and later UK Subaru Impreza STi.
The VF35 is similar to the VF34, using the same compressor housing and compressor inducer size. The differences are in the divided thrust-bearing design and the P15 exhaust housing.
This allows the VF35 to spool slightly earlier than the VF34 at around 2800-2900 at the cost of less top-end performance.
Expect to achieve full boost (with the proper mods and mapping) between 2900-3300rpms and will probably max out at around 325bhp.
The VF35 is similar to the VF34, using the same compressor housing and compressor inducer size. The differences are in the divided thrust-bearing design and the P15 exhaust housing.
This allows the VF35 to spool slightly earlier than the VF34 at around 2800-2900 at the cost of less top-end performance.
Expect to achieve full boost (with the proper mods and mapping) between 2900-3300rpms and will probably max out at around 325bhp.
The actual difference in the 34 / 35 spool will probably be marginal anyway, but I'm sticking with my statement that the vf34 is overpriced for the power it actually delivers.
If I was spending that money, then having run a TD04 and vf35 on my old WRX, and then another 35 and now a TD05 20g on my current STI I'd recommend 18g on a WRX, but that's just my preference.
I just found the IHI range a bit too gutless for my liking and they always seemed to run out of puff just at the point you needed more!
Last edited by MrNoisy; 15 October 2012 at 11:39 AM.
15 October 2012, 04:43 PM
#30
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As I recalled, the 34 is the roller bearing item, and spools slower than the 35, but produces fractionally more mid-range and top end than the 35.
The Subaru 4 U sales blurb seems to support this too.
As you say - very dependent on setup, but the same can be said for a ported 18g with a decent set of headers and matched up pipe.
The actual difference in the 34 / 35 spool will probably be marginal anyway, but I'm sticking with my statement that the vf34 is overpriced for the power it actually delivers.
If I was spending that money, then having run a TD04 and vf35 on my old WRX, and then another 35 and now a TD05 20g on my current STI I'd recommend 18g on a WRX, but that's just my preference.
I just found the IHI range a bit too gutless for my liking and they always seemed to run out of puff just at the point you needed more!
The Subaru 4 U sales blurb seems to support this too.
As you say - very dependent on setup, but the same can be said for a ported 18g with a decent set of headers and matched up pipe.
The actual difference in the 34 / 35 spool will probably be marginal anyway, but I'm sticking with my statement that the vf34 is overpriced for the power it actually delivers.
If I was spending that money, then having run a TD04 and vf35 on my old WRX, and then another 35 and now a TD05 20g on my current STI I'd recommend 18g on a WRX, but that's just my preference.
I just found the IHI range a bit too gutless for my liking and they always seemed to run out of puff just at the point you needed more!
try an sc instead of 20g and you'll think the 20g is a lag monster.
sc is billet version, so spools alot better, by far the best turbo;s on the market at the min, just need to pick the right one for you application and target.