New FP White turbo
Jul 8, 2008, 04:42 PM
#511
I said **** it when I got a new turbo and just went for a evo 9 turbo for now on my 8 and with meth injection the spool was really fast and good power too
haha enough to blow my motor a lil over a month ago. I'd go with something based of the evo 9 turbo
haha enough to blow my motor a lil over a month ago. I'd go with something based of the evo 9 turbo
Jul 8, 2008, 05:38 PM
#516
Absolutely, although most compressor flow maps give a decent indication of the max speed you will get out of them. The more vertical the top shaft speed line ends up being as the airflow rises, the closer you can get to a decent idea of how much is left in the wheel on the right of the map. I'll then start manipulating boost and VE based on data that I've collected on several different setups. Typically speaking, if the car seems to have more turbine then compressor, the boost pressure usually drops and VE stays up to a reasonable level. In comparison, I've tended to notice that undersized hotsides typically make a ton of boost, but VE takes a serious hit as exhaust backpressure rises.
I've deduced this by back calculating compressor flow from data logs and then plotting it on the maps. I don't have all the neat stuff you guys have to really put everything together though, so it's mostly just a causal rule of thumb that I've gone by. Maybe it's a bad rule of thumb that I'm going by, but it seems to hold reasonably true on different cars and different turbos.
Referring to the plot of the turbo while running ~166k RPM: The white makes for a very interesting system. Looks like a very good turbine to compressor match. I say this based on the data at the absolute limit. The back pressure is still reasonably well in check, the wastegate is open and controlling boost still, boost is holding (at least the average value), all while the compressor is showing it's limits through the choppy pressure reading. 23 psi and 7000 RPM and that thing is looking happy as can be where the IX turbo is getting a little over ran by 20 PSI at this RPM.
I've deduced this by back calculating compressor flow from data logs and then plotting it on the maps. I don't have all the neat stuff you guys have to really put everything together though, so it's mostly just a causal rule of thumb that I've gone by. Maybe it's a bad rule of thumb that I'm going by, but it seems to hold reasonably true on different cars and different turbos.
Referring to the plot of the turbo while running ~166k RPM: The white makes for a very interesting system. Looks like a very good turbine to compressor match. I say this based on the data at the absolute limit. The back pressure is still reasonably well in check, the wastegate is open and controlling boost still, boost is holding (at least the average value), all while the compressor is showing it's limits through the choppy pressure reading. 23 psi and 7000 RPM and that thing is looking happy as can be where the IX turbo is getting a little over ran by 20 PSI at this RPM.
Only problem is unless you use a stock factory car with a factory boost curve you're driving waaaay outside the meat of the comp map. Once everything is turned up a notch or 3 trying to plot is somewhat useless. Difference between a performance oriented unit and a factory unit is the performance unit will work better 'on the edge'. It won't make a damn bit of difference if the center island says 80% or 70% when you're never there. There's a copy of the TME 8 comp map on our website, it actually goes farther to the right than a 9 does, plot the data on that and see just how far off the map it is already at a 2.7 PR. The factories never show you the far right side where all the RPM lines are basically vertical and near the same flow rate, operating in this area they consider 'not normal' but we all do it. But if you look at the data on the 1580 I posted this 'wall' becomes very clear- it WON'T do any more. Its done. Every compressor/cover combo has this.
Jul 8, 2008, 06:14 PM
#517
Well some don't know everything as much as some that's why we try to get as much information as I can before I purchase anything. If I have a question up here, dang on skippy I'm going to ask, no matter how stupid it may sound. I like to have things clarified and get opinions.
on topic: I'll have an FP turbo of some color someday...
Jul 8, 2008, 09:16 PM
#518
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I really want to see how the white performes compared to the 9 turbo. I am buying a 9 turbo for my VIII and if the results are as good as i think i will have it shiped to FP.
Jul 9, 2008, 06:20 AM
#525
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Mmmm just wondering.
Adding some 680cc injectors and a fuel rail wouldn't be that difficult and I'd be retuning anyways so I suppose rescaling the injectors etc. wouldn't be an issue.
Just curious I guess
Adding some 680cc injectors and a fuel rail wouldn't be that difficult and I'd be retuning anyways so I suppose rescaling the injectors etc. wouldn't be an issue.
Just curious I guess