TTimpreza

yes the bypass valve need to be close.

this is very fresh video when just after start,not have good setup yet http://www.facebook.com/home.php#!/video/video.php?v=448017187122&comments

http://www.facebook.com/home.php#!/video/video.php?v=448017187122&comments

for normally drive up shift gears,4000 to 4500 will be needed,is like a natural aapirated car,after 5000 is a turbo car,i call it late spool up,and something very special is the tacho meter and the boost meter they run almost the same speed,very linear.

i want to do a better video for you!

Just thought I would share what I have been up to over the past couple of weeks.
Rather than travelling down the tried and trusted path of binning the twins and strapping on a massive single I thought I might try and see just how far I can take the twin setup. This is just the first step and involves the 2 new turbos and intake pipe. Next step will be fitting a dual core vertical FMIC, bigger IC valve and I have an idea for a set of headers that I would like to try.



This is the 2 OEM turbos on top and the new hybrids below - secondary's on the left, primaries on the right. OEM is VF18/19 and the hybrids are TD04-13T/VF25 primary and TD04-13T/VF14 secondary. I have kept the wastegate on the secondary for future use. (might be necessary after the headers are done)



VF18 on the left, hybrid on the right. This clearly shows the difference in compressor size between the two.



Again, VF18 on the left, hybrid on the right. You can see the turbine wheel is much larger so flow should improve and it will be capable of driving the larger 13T comp wheel. The turbine wheel has been replaced with a TD04 wheel rather than the TD04L wheel which is used from factory. The 2 wheels share almost identical exducer's and inducer's however the standard TD04 wheel has a slightly shorter tip height. This reduces weight of the wheel and flow capabilites which should help reduce lag on spool up, particularly at changeover.



This is the 2 primaries again. Bit hard to tell but you can see that VF25 turbine housing on the hybrid is much smaller than the VF18. This reduced AR ratio should help with spool up as the TD04 core is journal bearing as opposed to the VF18's ball bearing core, also the physically larger wheels will now be much harder to drive too.



New intake pipe. I have made it from 2.5 inch mild steel and 63mm radiator hose and coated with a layer of high temp engine enamel. This is a total pain in the arse to fit as there is only just enough room for the standard plastic pipe as it is. I have had to delete plumback section for the BOV just before the primary, and also the crankcase breather that plumbs back into the OEM pipe just under the TB. This will insted be rerouted to a tee piece between the secondary bypass valve and intake pipe. PCV valve will also be deleted as I can't be bothered rerouting those hoses too (there just isn't enough room to work with). The 3 smaller pieces up top are 2 inch mild steel and are used from the compressor outlets -> TMIC.

The maths I have done suggest that airflow from these 2 puppies should be ample for a good power figure but I am in no way going to make any predictions yet. Just going to see if it actually works first - the turbos might respond poorly and it will just be a real pig to drive

P.S. apologies about the quality of pics, apparently the card in the camera was corrupted so I have just used my phone.

Ta
Aaron

good luck! but this hybrid turbos is come from what car?

the cel code is on is because the unplug of the diferential pressure sensor,and with the SYMS RACING ecu,i also have boost cut at 1.1 bar,full boost at 5000 rpm,speed limit can over 180km/h,fuel consumption,better then standard.


regards
Barros

and in the syms racing site also say is normal after manifold installation the engine light will on,and the diferential pressure sensor need to be disconet.

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