[amw896]

I thought durability would be better since they refab oem turbos with stronger components to handle the increased boost.

[Dylan86]

Originally Posted by bryan_f22

road track or drag track?

You dont want a ps2 setup for road track, youll burn those things up in no time.

ps2 is a solid product, but many people are already on their 2nd or 3rd set from just doing hard drag and roll racing.

For me, road track and regular street driving. I don't want it for max power, was hoping for an "easier" attempt at 400whp on pump, no meth. Hoping to run less boost and reach FBO/Meth numbers without the need to max everything out.

I think based on the feedback I'm going to do the flash tune, and see how it goes for 2018, combined with the whole new track setup installed.

Thanks for the advice, it's more or less what I was worried about, the turbo reliability..

JB4 vs Flash tune, I already know it will feel like a whole new car. The tune we have in the GTI is APR flash tune, and it walks JB3 tuned GTI's by 6-7 cars. The flash tune is way smoother than the JB3 as well, when I compared the two. I'm hoping for a similar experience when I move to a flash tune, on the 2er. I will simply leave the JB4 on as a boost/meth controller after that.

[ICantDrive4Sht]

Originally Posted by amw896

Currently running 370/420 to the wheels with FBO and BM3 stage 2 91 octane tune. I'd like to stay on stock fueling if possible. Even 93 is tough to get here. I was hoping the turbo upgrade would bring me to about 450 without additional fueling.

Dont know what kind of horsepower you measure, but if you have 370hp to the wheels thats waaaaaaaay over 400hp from the crank. No true.

[amw896]

Originally Posted by 6erLover

Dont know what kind of horsepower you measure, but if you have 370hp to the wheels thats waaaaaaaay over 400hp from the crank. No true.

True, I had it dynod lol. It's not that crazy considering flash tune and fbo. The torque is what really puts the smile on my face.

[allthatisntnow]

There does seem to be some discrepancy between peoples crank and wheel horsepower figures. Im FBO running 16psi with 99Ron (93Aki) and am getting 400/417 crank - dyno measured which is about 340whp.
Euro dynos appear more conservative?

[SeanWRT]

Originally Posted by allthatisntnow

There does seem to be some discrepancy between peoples crank and wheel horsepower figures. Im FBO running 16psi with 99Ron (93Aki) and am getting 400/417 crank - dyno measured which is about 340whp.
Euro dynos appear more conservative?

Do you run 16psi at 7000rpm?

[allthatisntnow]

Originally Posted by SeanWRT

Do you run 16psi at 7000rpm?

16 @ 6000 - 6500
15.5 @ 7000

[SeanWRT]

Originally Posted by allthatisntnow

16 @ 6000 - 6500
15.5 @ 7000

DME is load based and boost will vary by a large margin to ambient temp if you are on flash only. Piggyback on absolute boost map is very strong in winter because of this.

As for crank power, unfortunately there is no dyno that's invented to scientifically and effectively measure that - you'll find tons of debate on this topic but at this point, we should be only safe to look at measured wheel horsepower compared to a baseline that's gotten on same day from same dyno machine.

[XutvJet]

Originally Posted by allthatisntnow

There does seem to be some discrepancy between peoples crank and wheel horsepower figures. Im FBO running 16psi with 99Ron (93Aki) and am getting 400/417 crank - dyno measured which is about 340whp.
Euro dynos appear more conservative?

Different brands of dynos measure power a bit differently. In the US, we tend to use the wheel power numbers. For whatever reason in Europe, they take the wheel power numbers and automatically calculate the flywheel/crank. It really makes no sense why the Europeans do this because the wheel power numbers are what make it to the ground and back calculating to crank numbers is wrought with issues and bias, far more so than relying on wheel power numbers.

[Daleb]

Comparing American numbers to European/Australian/SA numbers is pointless. The latter tend to make the same crank figures as claimed by the manufacturer. Where as in America the manufacturer claimed figure is closer to your wheel numbers. For example most ps2 results tend to fall between 520-550 flywheel horsepower over here where as in the states it's 520-550 whp.

Terminal/trap speeds and vbox numbers are a better way to compare but even then you have different climates and environments that people will still argue over.

[Taunto]

9 hours is about right IMO. Ive done a couple turbo replacements and turbo oil feed line repairs here at the dealer. dont remember the exact time off my head that it pays. Not bragging but ive done them 5 hours in and out.. its not a difficult job just time consuming especially if its ur first time doing the repair let alone first time dropping the subframe.

If your going with a new turbo - make sure the new turbo comes with Turbo oil feed lines or even just O-rings for the Feed/return lines.

[amw896]

Thanks for replies guys! I guess my next concern is that these are remanufactured turbos. Am I being picky but when I'm dishing this kind of $$, I want brand new top notch product.

[Dylan86]

If concerned about the brand, what about the Dinan turbo upgrade using BM3 as the tuning platform and essentially much better power delivery? Or is Dinan's turbo manufactured by the same company?

I only suggest it because I've never heard of one of their turbo's failing?

[amw896]

Originally Posted by Dylan86

If concerned about the brand, what about the Dinan turbo upgrade using BM3 as the tuning platform and essentially much better power delivery? Or is Dinan's turbo manufactured by the same company?

I only suggest it because I've never heard of one of their turbo's failing?

I don't think Dinan turbos are compatible without their software. I'm not sure though. Maybe I'm just being paranoid about the Pure. I would feel a lot better knowing the history of the actual turbo. Essentially, I'm sending them my 0 issue, low mileage core and getting who knows what in return...

[Dylan86]

Originally Posted by amw896

I don't think Dinan turbos are compatible without their software. I'm not sure though. Maybe I'm just being paranoid about the Pure. I would feel a lot better knowing the history of the actual turbo. Essentially, I'm sending them my 0 issue, low mileage core and getting who knows what in return...

It's just their hardware, which I'd imagine from a specification standpoint, is quite similar in comparison to a PS1 kit? Just an idea, but not if you're going for big powa.. I think it's one of those things where you get passed the point of return and say "F-it, I'll cross that bridge when I get there" and move forward. All things like warranty support from BMW, new car "reliable" status, etc. go out the window at that point.

[Anthony235]

Originally Posted by Dylan86

If concerned about the brand, what about the Dinan turbo upgrade using BM3 as the tuning platform and essentially much better power delivery? Or is Dinan's turbo manufactured by the same company?

I only suggest it because I've never heard of one of their turbo's failing?

Probably never hear of them failing cause so few people run the Dinan turbo. Probably 10:1 pure/dinan ratio. If not more.

[Dylan86]

Originally Posted by Anthony235

Probably never hear of them failing cause so few people run the Dinan turbo. Probably 10:1 pure/dinan ratio. If not more.

Yea that crossed my mind as well. Not sure if Dinan modifies an OEM unit, or works with a supplier like PT, either way was just a thought.

On the newer GTI's you can swap the S3/R turbo (BW IS38) and the power bump is incredible (30-40whp 40-50ft-lbs), while retaining stock like reliability and dirve-ability. I was thinking at one point that maybe the turbo from the M2 may have some merit to it, but if they're already being maxed out at similar numbers, it probably wouldn't be worth it for just a bump in power. It would/could be a great alternative for when (not if) the factory turbo pukes, even if it only came through with marginal gains. Gains are gains...

[Taunto]

You cant go wrong with a Pure Turbo. Have very high rep. Very good customer service and alot of great feed back from the BMW community

[mike@x-ph.com]

[BEM-S4]

Originally Posted by Dylan86

Yea that crossed my mind as well. Not sure if Dinan modifies an OEM unit, or works with a supplier like PT, either way was just a thought.

On the newer GTI's you can swap the S3/R turbo (BW IS38) and the power bump is incredible (30-40whp 40-50ft-lbs), while retaining stock like reliability and dirve-ability. I was thinking at one point that maybe the turbo from the M2 may have some merit to it, but if they're already being maxed out at similar numbers, it probably wouldn't be worth it for just a bump in power. It would/could be a great alternative for when (not if) the factory turbo pukes, even if it only came through with marginal gains. Gains are gains...

Dinan used to modify an OEM unit. Now unsure if they still do that or slap a Dinan badge on an aftermarket part.

[jmwilson125]

Originally Posted by mike@x-ph.com

What is that manifold Mike? OEM out of vehicle?

[mike@x-ph.com]

Originally Posted by jmwilson125

What is that manifold Mike? OEM out of vehicle?

yoandry