blues70t5

wot in 1st and 2nd i can hit 10psi shift into 3rd and i can barly get 5psi and the car just falls on its face. and also what vac are you s/c guys running i got 20? it pulls really hard 1st and 2nd then just falls on its face in 3rd and 4th dosnt make sense to be a boost leak.

i have 9.5psi pulley,header,intake, and forge 007 bpv what ever spring came in it didnt change it.

garyc_01

to start check ur bpv spring or install the right way and check lines...

blues70t5

i tryed taking the bpv off and checking it i put a spacer in that it came with and still 5 psi and drops in 3rd there is only 2 lines to check and the both look good. and im pretty sure it is in the right way the valve part towards the boost pipe.

blues70t5

tryed differnt springs in the bpv turned it around nothing changes still hits 5psi and drops to 1-2psi. nobody has had this befor? and can anyone tell me what there vac is at idle, also it seems to idle around 1k-1200 rpm

TimatSP

vac should be in the 15 to 18 range...

1st and second in the TC are pretty quick... When you have full load on the motor in 3rd a boost leak might be more prevelent. Do a boost leak test and see what you find.

What fuel management do you have? and do you know what your AFR's at Idle are... The stock ecu likes to do some weird stuff to these cars once boosted... It might be pulling timming.

We have one here with an FIC and our turbo kit... whenyou stab it in third the stock ECU is trying to close the throttle plate causing the car to stumble and jerk pretty bad.

Tim
Sound Performance

blues70t5

yes that is what it feels like. i have the trd tune but i disconnected my battery once ,does the ecu reset? wideband should be installed tommrow. and for a boost leak test can i test it just like a turbo by forcing air in with a an air hose?

kikcaffine

Which belt are you using? If your not using the Gate 070890 (I believe thats the part number) your GOING to slip the belt.

TimatSP

has it always done this? or did it start after you reset the ECU?
It sounds to me like the ECU is trying to correct it self around somehting... You might just have to take it to toyota snd see if the tune is still in there.

blues70t5

i use a gates what ever nst sells with the pulley. and ever since i put the pulley on it has felt this way.and what spring think i should use the forge i put the yellow and green in the yellow one just seemed to back fire more during shifting and the green one makes alot more noise.