[PeterPure]

Originally Posted by Bours

Anyone can tell if they really feel the difference with the inlet pipe and where in the powerband do you feel it ?

Look you dont feel a difference with the inlet pipe under 20 psi. Eg i could run 20 psi > 6k rpm without the inlet however duty cycle is maxed. Then i run the same boost with inlet with less dutycycle and it makes the same power. Only now with inlet i can do 24 psi at 6k and 23 psi at 7k with max dutycycle. So the higher boost ofcourse gives more power.

The inlet is a nice addon for the stage2 turbo allowing the turbo to breath more easily. In return allowing for more boost by removing a restriction. If you run less then 20 psi boost it wont make a power difference. It will just help the turbo to reach the same power levels more easily with less effort.

[katsooba]

i had some free time on my lathe so i decided to pull out my stock inlet and take some measurements, holly smokes bmw have lost some serious diameter with that plastic\rubber inlet mount.

top flange is
stock 74OD 70ID mm
i made 75OD 73ID mm

turbo side inlet
stock is 49ID mm 65mm OD with rubber rings
i made 59ID with 64.5mm OD and left some space for sealing orings. i checked if the turbo side inlet i made went in the turbo every 0.5mm i have cut, untill i felt it has enough room for O-rings aswell.
i have an aluminum reducer from 2.5 to 3" and used a 90 degree silicone connection for the transition.

final welds and fitting will be done next week, seems pretty easy to make once i had the measurments, total work time on my lathe was about 40 mins and another hour fiddling with fitments

[Bours]

Originally Posted by Darkhold

Look you dont feel a difference with the inlet pipe under 20 psi. Eg i could run 20 psi > 6k rpm without the inlet however duty cycle is maxed. Then i run the same boost with inlet with less dutycycle and it makes the same power. Only now with inlet i can do 24 psi at 6k and 23 psi at 7k with max dutycycle. So the higher boost ofcourse gives more power.

The inlet is a nice addon for the stage2 turbo allowing the turbo to breath more easily. In return allowing for more boost by removing a restriction. If you run less then 20 psi boost it wont make a power difference. It will just help the turbo to reach the same power levels more easily with less effort.

Thank you for the explanation very nice car btw cant wait for you to quarter mile that beast !

[PeterPure]

Originally Posted by Bours

Thank you for the explanation very nice car btw cant wait for you to quarter mile that beast !

Tomorrow I have a rolling start half mile event in France that I am attending. I hope to shoot some nice footage

[Bours]

Originally Posted by Darkhold

Tomorrow I have a rolling start half mile event in France that I am attending. I hope to shoot some nice footage

Perfect !! Sounds good keep me updated

[Nugget]

Originally Posted by Bours

Anyone can tell if they really feel the difference with the inlet pipe and where in the powerband do you feel it ?

I feel it in my pants.

[Bours]

Originally Posted by Nugget

I feel it in my pants.

I bet you feel nuts

[Newguy123]

Originally Posted by Bours

I bet you feel nuts

Yeah Dee......

DEE SNUTS!

[Bours]

Originally Posted by Newguy123

Yeah Dee......

DEE SNUTS!

Hahaha ! Let the good times roll !

[JETmn]

Originally Posted by Dhillon92

Then there were mentions by Jetmn that perhaps this inlet wouldn't be a solid fit for the stock turbo due to the unbored stock compressor side.

Just to clarify, I was talking about the pure inlet causing a step where it mates up with the inlet on the stock turbo. The pipe's outlet is bored out for the stage 2, not the stock or smaller stage 1 inlet. Now the question is whether the increased pipe size outweighs the step that will be created in the inlet for stock/stage 1 turbo cars.

[kevBquick]

bump for those awesome results/dyno numbers/logs/etc.

[Turbod]

Is there any new information on this inlet for FBO stock turbo cars?

[Dhillon92]

Originally Posted by Turbod

Is there any new information on this inlet for FBO stock turbo cars?

Thinking the same thing, I'll order one just now if there is!

[Newguy123]

Originally Posted by Turbod

Is there any new information on this inlet for FBO stock turbo cars?

Originally Posted by Dhillon92

Thinking the same thing, I'll order one just now if there is!

ask houtan he is FBO stock turbo with pure inlet.

[kevBquick]

this thread is dead. if there was....it would have been posted and these things would be flying off the shelf like the next hot mod.

for a stage 2 sure people buy it....do we even have data on that piece alone and what it actually does........no. blind faith.

as i have said many times....i would love to see some JB logs. stock vs inlet.

[Bours]

Originally Posted by kevBquick

this thread is dead. if there was....it would have been posted and these things would be flying off the shelf like the next hot mod.

for a stage 2 sure people buy it....do we even have data on that piece alone and what it actually does........no. blind faith.

as i have said many times....i would love to see some JB logs. stock vs inlet.

well said sir

[houtan]

Originally Posted by Newguy123

ask houtan he is FBO stock turbo with pure inlet.

As newguy mentioned, I do have the Pure turbos inlet installed with my stock turbo. Looking at logs will not tell you much, because even if the boost is the same before and after the inlet install does not mean there are no power gains. For example, there are before and after dynos between stock and after market intake, boost is exactly the same, but power increases. Having said that, I have posted comparison logs before an after install of the inlet an long time ago in an old thread: http://www.1addicts.com/forums/showt...ight=ptf+etune.

I can tell you boost is similar before and after. The inlet is not going to magically give you more boost in the top end, nor should anyone expect it to as that is directly due to the limitation of the stock turbo. In terms of PWM, it has been mentioned that it goes down with the inlet installed. But that is not measurable for me as my PWM is typically pinned at 100%. Who knows, there may be other benefits as well, such as quicker spool or reductions in IAT because the turbo has a bigger pipe to breathe through. But I don't have the time to measure and gather the data.

The inlet was the last upgrade available to me pre-Pure stage 2 upgrade, so I would eventually be buying it. But for me, I felt it would make a difference with my stock turbo as well, so I bought it because believe the bigger opening will make a difference and because it is made by a reputable vendor on our forums (there are some shady companies on here, but there are some stand up ones as well, and I'm all for supporting them).

I can tell you my car absolutely rips and breaks my 275s loose rolling in second gear almost to redline and sometimes breaks them loose in the midrange of third. To me, it made a slight difference.

Let me know if you guys have any additional questions.

[weehe126]

If I read your other post right, you saw a 2psi increase at higher rpms. Was this due to the intake or the tune?

[houtan]

It was the tune. Probably could have worded that sentence better. Not sure why the tune holds more boost at the top end vs my jb4 map 6, but it does.

[weehe126]

Interesting, I will have to take a look at those logs then. Did you notice anything specifically different with the tune targets after the inlet? Other than it holding more boost.

[houtan]

Just want to clarify:

with the stock intake and inlet, the ptf tune was holding about 2psi more than my jb4 at 5,500 rpm on pump and e50 tunes.

then I installed the inlet and injen intake, and the boost was the same when I logged.

I did feel a slight increase in power with the inlet and intake, but that is just my butt dyno. I never took a detailed look between the two logs, but anyone is welcome to. would be interesting to see if someone found some differences.

As of today, I am running the JB4 with stock intake (afe dry drop in) and pure inlet. Car feels the same as with the intake. Boost looks similar to my old JB4 map 6 logs at 100% PWM.

[Bours]

Originally Posted by houtan

Just want to clarify:

with the stock intake and inlet, the ptf tune was holding about 2psi more than my jb4 at 5,500 rpm on pump and e50 tunes.

then I installed the inlet and injen intake, and the boost was the same when I logged.

I did feel a slight increase in power with the inlet and intake, but that is just my butt dyno. I never took a detailed look between the two logs, but anyone is welcome to. would be interesting to see if someone found some differences.

As of today, I am running the JB4 with stock intake (afe dry drop in) and pure inlet. Car feels the same as with the intake. Boost looks similar to my old JB4 map 6 logs at 100% PWM.

Why did you drop the protune for jb4. Did you dislike something about it ?