Is it normal to sound like an F16 preparing for takeoff when I close the throttle suddenly? I have no BPV so I was thinking it was compressor surge but it doesn't have that fluttering sound you usually associate with surge.

youve answered your own question mate.

you dont have an air filter, hence nothing muffling/blocking the noise the turbo makes. so as the turbo compressor wheel spins up to create boost and then u back off the throttle... the turbo compressor wheel will spin until it eventually looses its momentium. hence making the cool wooshing f16 sound u describe.

also i wouldnt recommend not having an air filter on, its purpose isnt only for dust, but also to stop things going in there that should ... i.e a leaf or insect, if something does go up there the turbo compressor could get wrecked... and thats expensive. get a pod filter or something asap!

update please

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x2

Only update is that I have put 100 miles on it and filled up with 91 octane. I'm looking into dumpvalves and I need to get an intake adapter made to fit my ST205 intercooler. I'll probably try hooking up the igf wire to the ECT ECU Monday... Thanks to Marting Luther King Jr. for the day off.

Last night I verified that the wastegate and acutuator are operating perfectly normally. I should be running on 6-7psi since the TVSV is capped off... but I did overboost to 17psi the other night so I can definitively say that there is an inherent boost creep problem with free flowing exhaust and the CT26. I have an extra exhaust side for the CT26 so I think I'll start chopping away at the wastegate port and swap them out.

i dont understand this creep people are experiencing. i ran the ct26 with just a 3" DP for a while, when the sound eventually got to me i finished hooking up the exhaust. but i never experience creep to that extant. creeping to 17psi when its supposed to be at 6-7 is ALOT. a psi or 2 isnt a problem but that seems a bit extreme to me. maybe the hose that connects to the actuator has a pin hole in it or the diaphragm itself?

Did you grind out that ssautocrap pipe justin ? If not your waste gate door could be getting stuck on the flange spiking your boost.

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The hose from the compressor housing to the wastegate actuator is brand new and a tight fit with new clamps. The other port is blocked off with a rubber cap and a clamp. I'm almost positive the diaphragm isn't leaking as I applied a steady 7psi to it and it held fully open for as long as there was pressure.

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Yeah I made damn sure that was ground down. Too many peolple before me had that problem with this cheap downpipe. I used my extra exhaust housing as a sort of dry run to make sure that the wastegate door wasn't hitting any part of the downpipe.

I'm just as baffled as anyone else why some people have problems and others don't.

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an open downpipe will make the problem worse.
some people dont even realize they creep because they dont have a peak hold boost gauge and cant keep their eyes glued to the gauge for the whole rpm range.
other people keep their cats in place, or use smaller exhausts.

Decided to put on an air filter today. Frozen condensation made the flapper door stick so the car was hard to start and wouldn't stay running without stepping on the throttle. Hopefully the filter will prevent moisture from gathering inside the AFM.

i ran open downpipe and boosted to like 12.5 psi on an open downpipe and that was the max i ever hit..

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i doubt its from moisture in the afm. the cold start injector switch goes bad. its a common problem on almost all 3sgte's.

so.. in the beginning of the thread you mentioned another tranny model #. what tranny is that?

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No, it's the frozen condensation that made the flapper door stick... Trust me, I know what I'm doing. I couldn't even budge the flapper door it was so stuck. I took a hair dryer to it and it ran like normal after it was all melted.

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AWD ECT from a RAV4.

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I have a freshly rebuilt turbo and an RC ECU. Maybe that's the difference.

Where are the pictures!

slushbox update please.

Sorry, I've been sick. I had the trans way over filled so I drained some out. I've pulled the wiring from the ECUs and I'll be adding a couple wires to the ECT computer when I start feeling better. Otherwise nothing interesting has happened.

Hrm... how about one freaking picture ? lol

Feel better man.

It's really just a run of the mill 3S swap but I'll take one or two for you guys.

12MPG has motivated me to do something about getting this transmission to shift on it's own. I tried to send it an IGF signal and that didn't seem to do it. I downloaded the 90-91 camry EWD and it looks like the stand alone transmission controller isn't so stand alone after all. It still needs input from the engine computer that the 3SGTE ECU can't provide.

Next step is going to be either making my own transmission controller... not as hard as you'd think, or buying the PCS transmission controller (freakin' expensive for what it is).

The only other option I can think of that may work well is to use the 5SFE computer to run the 3S and ECT while making corrections with an Emanage Ultimate.