![Smile :)](./images/smilies/icon_e_smile.gif)
Well, I built my MR2 3sgte rev3 turbo with some upgrades: JUN 264 cams, Mahle pistons, Eagle rods, 880 Delphi injectors, BMC CDA airbox, chargecooler, 1ZZ cop, 100m 100cell metal catalyser, japspeed exhaust, Borg Warner EFR 6758 turbo
I went to Ryan, to get it mapped and it was a great pleasure. Unfortunately my wastegate actuator spring was too weak, so it couldn't hold the 1.5 bar all the way till redline and so I had the boost dropping from about 5000rpm to 1.2 bar at 7000rpm. I "only" achieved 388bhp and around 350 ft-lbs. Caused by the boost drop the torque dropped quite a bit which made the whole curve a bit sad.
![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/mr2/DSCN4762_zpsz4musf7s.jpg)
At home I installed a stiffer wastegate spring and now the turbo holds the 1.5 bar fine..... until about 6000 rpm where I hit fp-limp
![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/mr2/test%202015_zpshgokwoye.jpg)
I am using the Toyota Supra Turbo fuel pump and my fuel lines are stock from the fuel pump to the fuel filter, which is a new but OEM Toyota MR2 one.
I am not sure, what could cause this as Ryan told me, "The Fuel pressure was dropping slighty but not that bad as it was running very rich and the Ecu was pulling out 10% also to try achieve the target CLL"
I wanted to change my fuelpump for a Bosch 044 and the fuel lines for a full set of AN-6 which they are from after the fuel filter to the injectors. My fuel pressure regulator is the sx performance one available via wolfkatz. But after Ryans answer, I am not sure, if this would cure the problem
![Sad :(](./images/smilies/icon_e_sad.gif)
If you need any other sensor readings, I can upload them.
Thank you very much