Internal gate capablility?

[TRD_ZERO]

Im wanting to know if my internal wastegate for a evo5 tdo5h will handle 20psi runs reliably? I wont be running that all the time just when i feel like turning it up? Im thinking of not going external and want to know what i could do?

[flygt4]

not really. you'll probly have issues controlling your pressures accurately. ive seen them ok up to ~17psi on evo's then they start struggling, with lots of spikes. ive seen an evo with a gauge indicated 18psi on a dyno run record spikes of up to 24-25psi. .
best way is to be safe rather than have a big spike and damage a piston or something.

either run less boost or get an external.

[escortman]

yeh im only going to run 15psi until i can afford an external

[MRDRFT]

or port out or internal a lil and weld a bigger plate on the gate and put a bigger spring in it!thats all i did!worked a treat

[method]

My evo managed to hold 20psi fine, but it would drop off to about 17psi at higher rpm. Did runs at torque performance to verify this.

Its easily solved with a after market wastegate actuator. Cheaper than a external and you can get 18psi ones for the td05's.

[escortman]

wat about the 16g tdo5 with adjustable actuator? does any1 have any feedback about these