The end result after 2 months of work, pics inside Options

[boosted_K2]

wow awesome! man, theres gotta be a better way for you swap guys to setup that turbo so the piping isnt everywhichway... very hot man!

[boosted_K2]

if you disconnect the TVSV you will run "low boost mode" consistantly, so you will loose the performance of the higher gears, unless you get a MBC, then you can disconnect the TVSV and run "low boost mode" all the time, but you can turn it up to whatever you want. heres the info:


The T/VSV (Turbocharger Vacuum Switching Valve) is a "factory-installed boost controller". It is simply a solenoid-operated valve that, when energized (open) allows air to escape from the actuator, lowering the pressure in the actuator, and allowing the wastegate to modulate closed. This vented air actually flows back into the intake airstream between the airflow meter and the turbo intake so it does not distort the ECU's air/fuel ratio calculations.

The T/VSV is a normally closed-energized open valve. The ECU will energize (open) it whenever you boost IF 1) engine coolant temps are up to normal , and 2) ambient (intake) air temps are above ~ 32 deg F. (There may be some variation with that number).

NOTE: Unless you have an aftermarket boost controller, disabling the T/VSV will lock you into low-boost mode!! It WILL NOT increase boost.

The normal range of max boost ranges from 7.1 to 11.8 psi, according to the Factory Repair Manual (BGB). Low boost problems are almost always a result of some problem in the boost control system and rarely with the turbo itself.

[lagos]

but where is the t-vsv located ? what does it look like?

[boosted_K2]

if you go under the car (in a MR2 atleast) thats the easiest way to get a look at it. its the part that the hose coming off the wastegate actuator (hose on the right) attaches to.

[boosted_K2]

[Akimbo]

Man that's nice. I'm not one for the exterior looks however because I'm not a *huge* fan of the GT-FOUR stuff.

[Supersprynt]

The easy way of disconnecting the effect of the TVSV is to cut and plug the hose from the actuator to the TVSV. Make sure you plug the hose from the actuator well, or you will be over boosting, its what happened to me.

[uzthedentist]

yep put in an m8 bolt and secure well

[rsos1]

Lagos are you going to make a how-to or summary of the swap wiring?

[lagos]

DG_Performance and I talked about doing something like this in the future, but 1st we want to figure out what every single wire is doing on the harness plugs.

[WannabeGT4]