Are your VTGs mooded or other bigger than stock?

 

I installed brv's and im not impressed, Didnt gain anything and spool seems the same. Now when I let off the gas after a WOT run and push the clutch in the car rpms drop to like 300rpm or dies? Maybe I have a vacuum leak but I log the car and the boost is prefect and so are the a/f's.

 

Stock are best and have show to be reliable and most tuners ask to leave stock BRV's.
Had after market BRV's and my tuner(Todd) had me switch back to stock.

 

I would take them both off and make sure the small window in the BRV mates with the opening in the turbo - I think they are easy to improperly install.

 

i had after market ones also also, CMS told me to switch back to stock,car is making around 700whp

 

Yes GT2 VTGs with 59.8 compressor side. Boost over 1.55bar

 

Wow, who is your tuner? Post some times to compare

 

hmm you mixed up again.
you can have max 49,8.

btw his car is fast for vtg's car I think.

 

and one more thing....compressor size is nothing special as turbine wheel is still same....

 

err yes karol is right, i meant 49.8mm compressor side. I wish someone could make vtgs with turbine wheels a few mm bigger to match the bigger cold side.
Car is around 730hp 950nm, 100-200 5.2sec best so far, 200-300 in 13 with extra weight, so 12 may be possible or better with better ICs.
Cams, rods, ported head, gt2 intake & exhaust with 100m cell and flaps.
Probably v close to the limit you can get with vtgs.
For the money spent i could have had a lot more power but wanted to stay with factory systems as much as possible. (ie VTGs)

 

100-200 1 shift?

have you tried no shift?

 

not yet..
When i settle on ICs and put again that open intake system i ll try it.. That is if gearbox will be able to take the additional torque with that intake

 

here is my spare one

 

Safe with 1000Nm...

 

I have spare engine too